ScrollView not working with GridLayout in android studio

ScrollView not working with GridLayout in android studio - android

Hi I want to create a responsive scrollable grids. As I search, I came across some codes. I tweaked this code to allow scrolling of the grids. The code creates a 2 column grids and 4 rows with cardViews. The cardViews shrinks to allow more cards into the viewport rather than scrolling. Am open to any ideas and alternative methods to make this work.Thanks in advance.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:scrollbars="vertical"
android:fillViewport="true">
<LinearLayout
android:orientation="vertical"
android:weightSum="10"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_weight="2"
android:layout_width="match_parent"
android:layout_height="0dp">
<TextView
android:id="#+id/textGrid"
android:text="Games"
android:textSize="34sp"
android:textColor="#android:color/black"
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
<android.support.v7.widget.GridLayout
android:id="#+id/gridView"
android:layout_weight="8"
app:columnCount="2"
app:rowCount="2"
android:padding="14dp"
app:alignmentMode="alignMargins"
app:columnOrderPreserved="false"
android:layout_width="match_parent"
android:layout_height="0dp"
>
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
app:cardCornerRadius="8dp"
app:cardElevation="8dp"
app:layout_columnWeight="1"
app:layout_rowWeight="1">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_margin="16dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:src="#drawable/sampleimage" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Grid One
android:textAlignment="center"
android:textColor="#000"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
</android.support.v7.widget.CardView>
</android.support.v7.widget.GridLayout>
</LinearLayout>
</ScrollView>

I have a pattern like that in one of my apps. Tickets get added to the 3-wide grid and you can scroll the grid. Here is the code I use.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/your_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:baselineAligned="false"
android:orientation="vertical">
<ScrollView
android:id="#+id/your_scrollview"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginLeft="2dip"
android:layout_gravity="center_horizontal">
<LinearLayout
android:id="#+id/your_grid"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:gravity="center"
android:orientation="vertical"
android:visibility="visible">
<GridView
android:id="#+id/gridViewTickets"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:numColumns="3"
android:padding="8dp"
android:horizontalSpacing="8dp"
android:verticalSpacing="8dp"
android:minHeight="250dip"
android:gravity="center_horizontal"
android:layout_gravity="center_horizontal">
</GridView>
</LinearLayout>
</ScrollView
</LinearLayout>

After a lot of research I came across RecyclerView. It was a little confusing but it worked fine. I had to use two(2) layouts (activity_main.xml and row_data.xml) with MainActivity.java.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="MainActivity">
<GridView
android:id="#+id/gridview"
android:numColumns="2"
android:verticalSpacing="1dp"
android:background="#e5e5e5"
android:horizontalSpacing="1dp"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</GridView>
</RelativeLayout>
row_data.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.CardView
android:id="#+id/gridviewdata"
android:layout_margin="12dp"
app:cardCornerRadius="12dp"
app:cardElevation="6dp"
android:layout_rowWeight="1"
android:layout_columnWeight="1"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:layout_centerInParent="true"
>
<LinearLayout
android:orientation="vertical"
android:padding="16dp"
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/images"
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:src="#drawable/apple" />
<TextView
android:id="#+id/fruits"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Apple something"
android:textStyle="normal|italic"
android:textSize="25dp" />
</LinearLayout>
</android.support.v7.widget.CardView>
</RelativeLayout>
MainActivity.java
package com.example.gridrecycler;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
GridView gridView;
String[] fruitNames = {"Apple","Orange","strawberry","Melon","Kiwi","Banana"};
int[] fruitImages = {R.drawable.apple,R.drawable.oranges,R.drawable.strawberry,R.drawable.watermelon,R.drawable.kiwi,R.drawable.banana};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//finding listview
gridView = findViewById(R.id.gridview);
CustomAdapter customAdapter = new CustomAdapter();
gridView.setAdapter(customAdapter);
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
// Toast.makeText(getApplicationContext(),fruitNames[i],Toast.LENGTH_LONG).show();
Intent intent = new Intent(getApplicationContext(),GridItemActivity.class);
intent.putExtra("name",fruitNames[i]);
intent.putExtra("image",fruitImages[i]);
startActivity(intent);
}
});
}
private class CustomAdapter extends BaseAdapter {
#Override
public int getCount() {
return fruitImages.length;
}
#Override
public Object getItem(int i) {
return null;
}
#Override
public long getItemId(int i) {
return 0;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
View view1 = getLayoutInflater().inflate(R.layout.row_data,null);
//getting view in row_data
TextView name = view1.findViewById(R.id.fruits);
ImageView image = view1.findViewById(R.id.images);
name.setText(fruitNames[i]);
image.setImageResource(fruitImages[i]);
return view1;
}
}
}
I watched diff tuts to come up with this. Am now doubting whether it comforms to best practices. Thanks to you all for your suggestions.

Related

Android TableLayout - add buttons dynamically at center of screen

Please see below screenshot for different results on tablet and on phones.
activity.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:id="#+id/frameLayout1"
android:weightSum="4"
android:padding="0dp"
android:orientation="vertical">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="centerCrop"
android:src="#drawable/crossword_background"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="0dp"
android:orientation="vertical"
android:id="#+id/frameLayout"
android:weightSum="4"
>
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:background="#android:color/transparent" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/tvTitle"
style="#style/TextAppearance.AppCompat.Widget.ActionBar.Title"
android:layout_width="100dp"
android:layout_height="24dp"
android:layout_marginStart="4dp"
android:layout_marginTop="4dp"
android:layout_marginEnd="4dp"
android:layout_marginBottom="4dp"
android:background="#drawable/count_frame"
android:fontFamily="#font/roboto"
android:gravity="center"
android:textColor="#5A0FC8"
android:textSize="13sp"
android:textStyle="bold"
tools:text="4" />
<TextView
android:id="#+id/menu_item_score"
style="#style/TextAppearance.AppCompat.Widget.ActionBar.Title"
android:layout_width="100dp"
android:layout_height="24dp"
android:layout_margin="4dp"
android:background="#drawable/count_frame"
android:gravity="right"
android:layout_alignParentRight="true"
android:textColor="#5A0FC8"
android:textSize="13sp"
android:textStyle="bold"
android:textAlignment="center"
tools:text="4" />
</RelativeLayout>
</androidx.appcompat.widget.Toolbar>
<LinearLayout
android:id="#+id/rightLayout"
android:layout_width="40dp"
android:layout_height="fill_parent"
android:layout_alignParentEnd="true"
android:layout_below="#id/horizontal_divider"
android:orientation="vertical" >
<LinearLayout
android:layout_weight="1"
android:layout_height="fill_parent"
android:layout_width="match_parent"
android:weightSum="4"
android:orientation="vertical" >
<ImageButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/ic_action_360"
android:background="#null"/>
<ImageButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/ic_action_360"
android:background="#null"/>
<ImageButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/ic_action_360"
android:background="#null"/>
<ImageButton
android:id="#+id/ShowHint"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/ic_action_360"
android:background="#null"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/leftLayout"
android:layout_width="40dp"
android:layout_height="fill_parent"
android:layout_alignParentStart="true"
android:layout_below="#id/horizontal_divider"
android:orientation="vertical" >
<LinearLayout
android:layout_weight="1"
android:layout_height="fill_parent"
android:layout_width="match_parent"
android:weightSum="4"
android:orientation="vertical" >
<ImageButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/ic_action_360"
android:background="#null"/>
<ImageButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/ic_action_360"
android:background="#null"/>
<ImageButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/ic_action_360"
android:background="#null"/>
<ImageButton
android:id="#+id/ShuffleButtons"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/ic_action_360"
android:background="#null"/>
</LinearLayout>
</LinearLayout>
<View
android:id="#+id/horizontal_divider"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_centerVertical="true" />
<RelativeLayout
android:id="#+id/firstLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="0dp"
android:layout_centerInParent="true"
android:layout_margin="0dp"
android:layout_above="#+id/horizontal_divider"
android:layout_below="#id/toolbar"
android:gravity="center">
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tblLayout"
android:gravity="center"
android:padding="0dip"
android:shrinkColumns="*"
android:layout_margin="0dip"
android:layout_centerInParent="true"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true">
</TableLayout>
</RelativeLayout >
<LinearLayout
android:id="#+id/secondLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/horizontal_divider"
android:layout_toStartOf="#id/rightLayout"
android:layout_toEndOf="#id/leftLayout"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/frame_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="5dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginBottom="5dp"
>
</FrameLayout>
</LinearLayout>
</RelativeLayout>
background_ic_btn_bonus.xml
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="#drawable/ic_btn_bonus"
android:tileMode="disabled" android:gravity="center" >
</bitmap>
background_ic_btn_default.xml
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="#drawable/ic_btn_default"
android:tileMode="disabled" android:gravity="center" >
</bitmap>
Corresponding Java Code
String[] iLayoutMap = getTableLayout();
/*
iLayoutMap contains split rows removing 2
2,0,0,0,0,0,0,2,0,0,0,0,0,0,2,0,0,1,1,1,0,2,0,0,0,1,0,0,2,0,0,0,0,0,0,2,0,0,0,0,0,0*/
TableLayout tableLayout = (TableLayout) findViewById(R.id.tblLayout);
for(int i=1;i<iLayoutMap.length;i++){
TableRow NewRow1 =new TableRow(this);
NewRow1.setPadding(0, 0, 0, 0);
NewRow1.setGravity(Gravity.CENTER);
NewRow1.setHorizontalGravity(Gravity.CENTER);
NewRow1.setVerticalGravity(Gravity.CENTER);
String [] items = iLayoutMap[i].split("\\s*,\\s*");
NewRow1.setWeightSum(items.length-1);
for(int j = 0; j < items.length;j++) {
if(items[j].equalsIgnoreCase("0")){
Button btnAdd = new Button(context);
btnAdd.setGravity(Gravity.CENTER);
btnAdd.setTextSize(25);
btnAdd.setTextColor(Color.WHITE);
//btnAdd.setPadding(10 ,10,10,10);
//btnAdd.setBackgroundResource(R.drawable.ic_btn_default);
btnAdd.setBackgroundResource(R.drawable.background_ic_btn_default);
btnAdd.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,TableRow.LayoutParams.WRAP_CONTENT ,1));
NewRow1.addView(btnAdd);
}else if(items[j].equalsIgnoreCase("1")){
//https://stackoverflow.com/questions/3404582/adding-text-to-imageview-in-android
Button btnAdd = new Button(context);
String strId = Integer.toString(i) + Integer.toString(j-1);
//btnAdd.setWidth(iObjectWidth);
//btnAdd.setHeight(iObjectHeight);
btnAdd.setId(Integer.valueOf(strId));
btnAdd.setGravity(Gravity.CENTER);
btnAdd.setTextSize(25);
btnAdd.setTextColor(Color.WHITE);
//btnAdd.setPadding(10 ,10,10,10);
//btnAdd.setBackgroundResource(R.drawable.ic_btn_default);
btnAdd.setBackgroundResource(R.drawable.background_ic_btn_bonus);
btnAdd.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,TableRow.LayoutParams.WRAP_CONTENT,1 ));
NewRow1.addView(btnAdd);
}
}
NewRow1.setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.WRAP_CONTENT,TableLayout.LayoutParams.WRAP_CONTENT,items.length-1));
tableLayout.addView(NewRow1);
}
Function
public String[] getTableLayout() {
if (lvlinfo != null) {
return lvlinfo.getLayout().split("2");
}
//Return this as default in case of failure
String arr = "2,0,0,0,0,0,0,2,0,0,0,0,0,0,2,0,0,1,1,1,0,2,0,0,0,1,0,0,2,0,0,0,0,0,0,2,0,0,0,0,0,0";
//String arr = "2,0,0,0,0,0,0,2,0,0,0,0,0,0,2,0,0,1,1,1,0,2,0,0,0,1,0,0,2,0,0,0,0,0,0,2,0,0,0,0,0,0";
return arr.split("2");
}
Expected Result ( Working correctly on Tablet with Android 4.4.2 with below code)
Actual Results ( Tested on multiple phones with OS >= 8.1.0)

I Have tried your code but unable to reproduce this output
For me your code is working fine check the output
Result in Oreo
Result in android pie
Result in android Q
as per my opinion you should use
You should use RecyclerView with GridLayoutManager
Follow this sample code
Add one recyclerview in your activity layout xml file
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/firstLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="0dp"
android:gravity="center">
<androidx.recyclerview.widget.RecyclerView
android:layout_width="wrap_content"
android:id="#+id/gridRecyclerView"
android:layout_centerInParent="true"
android:layout_height="wrap_content"/>
</RelativeLayout>
Now inside your activity set GridLayoutManager to your RecyclerView
GridLayoutManager (Context context,
int spanCount)
Creates a vertical GridLayoutManager
Parameters
context Context: Current context, will be used to access resources.
spanCount int: The number of columns in the grid
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
public class JavaActivity extends AppCompatActivity {
RecyclerView myRecyclerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_java);
myRecyclerView = findViewById(R.id.gridRecyclerView);
GridLayoutManager gridLayoutManager = new GridLayoutManager(JavaActivity.this, 6);
myRecyclerView.setLayoutManager(gridLayoutManager);
myRecyclerView.setAdapter(new MyAdapter(this));
}
}
Create one adapter class RecyclerView like this
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
private Context context;
public MyAdapter(Context context) {
this.context = context;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.row_list_item, parent, false);
return new MyViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull MyViewHolder holder, int position) {
if (position%2==0){
holder.imgBanner.setBackgroundColor(Color.BLUE);
}else {
holder.imgBanner.setBackgroundColor(Color.GREEN);
holder.imgBanner.setImageResource(R.drawable.red_heart);
}
}
#Override
public int getItemCount() {
return 36;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
ImageView imgBanner;
public MyViewHolder(#NonNull View itemView) {
super(itemView);
imgBanner = itemView.findViewById(R.id.imgBanner);
}
}
}
Create one layout file for RecyclerView item
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_margin="2dp"
android:orientation="vertical">
<ImageView
android:id="#+id/imgBanner"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="#string/app_name"
/>
</RelativeLayout>

Try with a padding like this:
<RelativeLayout
android:id="#+id/firstLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="someDp" ->>>> Padding
android:paddingRight="someDp" ->>>> Padding
android:layout_above="#+id/horizontal_divider"
android:layout_below="#id/toolbar"
android:gravity="center">
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tblLayout"
android:gravity="center"
android:shrinkColumns="*"
android:padding="0dip"
android:layout_margin="0dip"
android:layout_centerInParent="true"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"></TableLayout>
</RelativeLayout >

ListView shows only one item in a ScrollView?

I have a ListView, where i changed appearence of row, but listview have size of one row, instead of fullscreen.
and my scrollview is working but listview is not working.
activity_graph_view.xml
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_graph_table_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="00dp"
android:background="#color/background"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/container_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include
android:id="#+id/toolbar"
layout="#layout/toolbar" />
</LinearLayout>
</android.support.design.widget.AppBarLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/appbar"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="5dp"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp">
<LinearLayout
android:id="#+id/layoutTableOne"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="5dp"
android:visibility="visible">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="Table View"
android:textSize="#dimen/subheading"
android:textColor="#color/subheading"
android:textAllCaps="false" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView
android:id="#+id/lv_spirometer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="#color/mdtp_button_selected"
android:dividerHeight="1dp" />
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:visibility="visible"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp"
android:weightSum="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="2">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.9"
android:padding="10dp"
android:text="Graph View"
android:textAllCaps="false"
android:textColor="#color/subheading"
android:textSize="#dimen/subheading" />
</LinearLayout>
<com.jjoe64.graphview.GraphView
android:id="#+id/grapfinal"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_weight="1" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp"
android:weightSum="1">
<LinearLayout
android:id="#+id/grphtextMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:id="#+id/grphtextColor"
android:layout_width="10dp"
android:layout_height="10dp"
android:layout_marginTop="3dp"
android:orientation="vertical" />
<TextView
android:id="#+id/grphtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="Hello"
android:textColor="#color/subheading"
android:textSize="14dp" />
</LinearLayout>
<LinearLayout
android:id="#+id/grphtextMain2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:id="#+id/grphtextColor2"
android:layout_width="10dp"
android:layout_height="10dp"
android:layout_marginTop="3dp"
android:background="#color/red_btn_bg_color"
android:orientation="vertical" />
<TextView
android:id="#+id/grphtext2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="Hello"
android:textColor="#color/subheading"
android:textSize="14dp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:visibility="visible"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp"
android:weightSum="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="2">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.9"
android:padding="10dp"
android:text="Graph View"
android:textAllCaps="false"
android:textColor="#color/subheading"
android:textSize="#dimen/subheading" />
</LinearLayout>
<com.jjoe64.graphview.GraphView
android:id="#+id/grapfinal1"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_weight="1" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp"
android:weightSum="1">
<LinearLayout
android:id="#+id/grphtextMain1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:id="#+id/grphtextColor1"
android:layout_width="10dp"
android:layout_height="10dp"
android:layout_marginTop="3dp"
android:background="#color/red_btn_bg_color"
android:orientation="vertical" />
<TextView
android:id="#+id/grphtext1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="Hello"
android:textColor="#color/subheading"
android:textSize="14dp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</ScrollView>
</RelativeLayout>
spirometer_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
app:cardBackgroundColor="#fff4f4f3"
app:cardElevation="10dp"
app:cardPreventCornerOverlap="true"
card_view:cardCornerRadius="8dp">
<LinearLayout
android:padding="5dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:id="#+id/tv_date"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center"
android:text="" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_marginLeft="10dp"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/tv_fvc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="FVC 3.15 L" />
<TextView
android:id="#+id/tv_fev1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="FEV1 2.44 L" />
<TextView
android:id="#+id/tv_pef"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="PEF 3.74 L/s" />
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
CustomAdapter1.java
public class CustomAdapter1 extends BaseAdapter {
ArrayList<GetUserSpirometer> arrayList;
public CustomAdapter1(ArrayList<GetUserSpirometer> arrayList){
this.arrayList=arrayList;
Log.e("arraylist length",""+arrayList.size());
}
#Override
public int getCount() {
return arrayList.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater= getLayoutInflater();
ViewHolder1 holder=new ViewHolder1();
convertView = inflater.inflate(R.layout.spirometer_item, parent, false);
holder.tv_date=(TextView)convertView.findViewById(R.id.tv_date);
holder.tv_fvc=(TextView)convertView.findViewById(R.id.tv_fvc);
holder.tv_fev1=(TextView)convertView.findViewById(R.id.tv_fev1);
holder.tv_pef=(TextView)convertView.findViewById(R.id.tv_pef);
String[] arr = getDate(Long.parseLong(arrayList.get(position).get_date()), "MMM dd, yyy/hh:mm a").split("/");
holder.tv_date.setText(arr[0] + "\n" + arr[1]);
holder.tv_fvc.setText(arrayList.get(position).get_userfvc());
holder.tv_fev1.setText(arrayList.get(position).get_userfev1());
holder.tv_pef.setText(arrayList.get(position).get_userpef());
convertView.setTag(holder);
return convertView;
}
}
Items are not scrolling.
how to solve this. please help.
thanks in advance.

Then you need to change itemView's xml file ,
android:layout_height="match_parent"
instead of like ,
android:layout_height="wrap_content"

Simple change in spirometer_item.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
....Your design code
</LinearLayout>

I was having problem with the same from such a long time. Then I found a solution that worked for me.
Add a ListViewHelper java class. Here below is code for ListViewHelper.java
package com.molescope;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
import android.widget.ListView;
public class ListViewHelper {
public static void getListViewSize(ListView listView){
ListAdapter adapter = listView.getAdapter();
if(adapter!=null){
int totalHeight = 0;
//setting list adapter in loop tp get final size
for (int i=0; i<adapter.getCount(); i++){
View listItem = adapter.getView(i, null, listView);
listItem.measure(0,0);
totalHeight += listItem.getMeasuredHeight();
}
//setting listview items in adapter
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() *
(adapter.getCount()-1));
listView.setLayoutParams(params);
}else{
return;
}
}
}
And after adding this java file, in your code wherever you are setting adapter to listview, right after that line add the code below:
ListView myList=(ListView) findViewById(R.id.listView);
myList.setAdapter(new ArrayAdapter<String>.
(this,android.R.layout.simple_list_item_1, listview_array));
ListViewHelper.getListViewSize(myList);

Layout of fragment disintegrates when it dynamically replaces framelayout

I have an app with MainActivity that contains a FrameLayout which would be replaced by a fragment based on which item is clicked in the bottom layout. I have a fragment named "bookings" that must appear in the body area when "Bookings" option is clicked. The "bookings" fragment contains a spinner and a button that are placed at the center of screen inside of RelativeLayout. When the fragment's layout is placed directly inside of body of MainActivity, the spinner and button is centered, just the way I want it to be.
<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bottompanel"
android:orientation="vertical">
<!-- The FrameLayout goes here -->
<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<Spinner
android:id="#+id/city_spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_above="#+id/center_space"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:dropDownVerticalOffset="20dp"
android:dropDownWidth="match_parent"
android:popupBackground="#d5ddea"
android:spinnerMode="dropdown" />
<Space
android:id="#+id/center_space"
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_centerInParent="true"/>
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Done"
android:layout_centerHorizontal="true"
android:layout_below="#+id/center_space"
android:onClick="doneButton" />
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="75dp"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
android:weightSum="3"
android:layout_weight="0"
android:id="#+id/bottompanel">
<LinearLayout
android:id="#+id/profile_button"
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1"
android:clickable="true">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_profile"
android:layout_gravity="center"
android:layout_weight="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Profile"
android:layout_gravity="center"
android:layout_weight="1"/>
</LinearLayout>
<LinearLayout
android:id="#+id/bookings_button"
android:clickable="true"
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_bookings"
android:layout_gravity="center"
android:layout_weight="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Bookings"
android:layout_gravity="center"
android:layout_weight="1"/>
</LinearLayout>
<LinearLayout
android:id="#+id/games_button"
android:clickable="true"
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_tournaments"
android:layout_gravity="center"
android:layout_weight="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Games"
android:layout_gravity="center"
android:layout_weight="1"/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1">
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1">
</LinearLayout>
</LinearLayout>
</RelativeLayout>
But when I replace the FrameLayout with the fragment, the spinner disappears and the button moves at the top.
Code in activity_main.xml:
<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bottompanel"
android:orientation="vertical">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/fragment_frame"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="75dp"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
android:weightSum="3"
android:layout_weight="0"
android:id="#+id/bottompanel">
<LinearLayout
android:id="#+id/profile_button"
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1"
android:clickable="true">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_profile"
android:layout_gravity="center"
android:layout_weight="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Profile"
android:layout_gravity="center"
android:layout_weight="1"/>
</LinearLayout>
<LinearLayout
android:id="#+id/bookings_button"
android:clickable="true"
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_bookings"
android:layout_gravity="center"
android:layout_weight="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Bookings"
android:layout_gravity="center"
android:layout_weight="1"/>
</LinearLayout>
<LinearLayout
android:id="#+id/games_button"
android:clickable="true"
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_tournaments"
android:layout_gravity="center"
android:layout_weight="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Games"
android:layout_gravity="center"
android:layout_weight="1"/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1">
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="1">
</LinearLayout>
</LinearLayout>
</RelativeLayout>
Code in fragment_bookings.xml:
<RelativeLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<Spinner
android:id="#+id/city_spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_above="#+id/center_space"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:dropDownVerticalOffset="20dp"
android:dropDownWidth="match_parent"
android:popupBackground="#d5ddea"
android:spinnerMode="dropdown" />
<Space
android:id="#+id/center_space"
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_centerInParent="true"/>
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Done"
android:layout_centerHorizontal="true"
android:layout_below="#+id/center_space"
android:onClick="doneButton" />
</RelativeLayout>
Code of onCreateView of bookings.java:
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_bookings, container, false);
Spinner loc = (Spinner)v.findViewById(R.id.city_spinner);
String[] cities = new String[]{
"Select a City",
"ABC",
"DEF",
"GHI",
"JKL",
"MNO"
};
// Initializing an ArrayAdapter
ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(
this.getActivity(),android.R.layout.simple_spinner_item,cities
);
spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_item);
loc.setAdapter(spinnerArrayAdapter);
loc.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapterView, View view, int pos, long id) {
L1 = id;
}
#Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
return v;
}
Code in MainActivity.java:
package com.example.user.temporary;
import android.app.Activity;
import android.net.Uri;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
public class MainActivity extends AppCompatActivity implements
profile.OnFragmentInteractionListener,
bookings.OnFragmentInteractionListener,
games.OnFragmentInteractionListener {
private Activity myActivity;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.myActivity = this;
LinearLayout profilebtn = (LinearLayout)this.findViewById(R.id.profile_button);
LinearLayout bookingsbtn = (LinearLayout)this.findViewById(R.id.bookings_button);
LinearLayout gamesbtn = (LinearLayout)this.findViewById(R.id.games_button);
profilebtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
profile profileFragment = new profile();
FragmentTransaction trans = getSupportFragmentManager().beginTransaction();
trans.replace(R.id.fragment_frame, profileFragment);
trans.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
trans.commit();
}
});
bookingsbtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
bookings bookings_frame = new bookings();
FragmentTransaction trans = getSupportFragmentManager().beginTransaction();
trans.replace(R.id.fragment_frame, bookings_frame);
trans.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
trans.commit();
}
});
gamesbtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
games games_frame = new games();
FragmentTransaction trans = getSupportFragmentManager().beginTransaction();
trans.replace(R.id.fragment_frame, games_frame);
trans.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
trans.commit();
}
});
}
#Override
public void onFragmentInteraction(Uri uri){
}
}

Change height of FrameLayout to match_parent from wrap_content
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bottompanel"
android:orientation="vertical">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragment_frame"/>
</LinearLayout>

You have match_parent in the height for fragment layout. Try changing it to wrap_content and see if it works

How to create main activity with list of ImageButton

I'm building an Android app.
In my first activity I want to create a list of button like this:
So I have build this code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#e3e3e3"
android:gravity="center_horizontal"
android:baselineAligned="false">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="4"
android:orientation="horizontal"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_marginTop="15dp"
>
<ImageButton
android:id="#+id/ButtonArticoli"
android:layout_width="150px"
android:layout_height="150px"
android:onClick="visualizzaArticoli"
android:scaleType="fitCenter"
android:src="#drawable/articoli"
/>
<TextView
android:id="#+id/textViewArticoli"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/articoli"
android:gravity="center" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="200px"
android:orientation="horizontal"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_marginTop="15dp"
>
<ImageButton
android:id="#+id/ImageButtonCreateOrder"
android:layout_width="150px"
android:layout_height="150px"
android:onClick="creaOrdine"
android:src="#drawable/order"/>
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/ordini"
android:gravity="center" />
</LinearLayout>
<!-- Prima Riga -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="200px"
android:orientation="horizontal"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_marginTop="15dp"
>
<ImageButton
android:id="#+id/ImageButtonClienti"
android:layout_width="150px"
android:layout_height="150px"
android:onClick="viewClienti"
android:scaleType="fitCenter"
android:src="#drawable/customer"/>
<TextView
android:id="#+id/textView23"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/cliente"
android:gravity="center" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="200px"
android:orientation="horizontal"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_marginTop="15dp"
>
<ImageButton
android:id="#+id/ImageButtonAlignDatabase"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="allineaDatase"
android:scaleType="fitCenter"
android:src="#drawable/sincronizza"/>
<TextView
android:id="#+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/allinea_database"
android:gravity="center" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="200px"
android:orientation="horizontal"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_marginTop="15dp"
>
<ImageButton
android:id="#+id/ImageButtonSetting"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="setting"
android:scaleType="fitCenter"
android:src="#drawable/setting"/>
<TextView
android:id="#+id/TextView01"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/impostazioni"
android:gravity="center" />
</LinearLayout>
</LinearLayout>
But the result of my app when I try yo start my application is this:
Can we help me?

Use this code if you have a fixed size of elements.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:background="#F1C983">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="15dp"
card_view:cardBackgroundColor="#D9EE9A">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher"
android:background="#null"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Sample Text"
android:layout_gravity="center_vertical"
android:layout_marginLeft="50dp"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="15dp"
card_view:cardBackgroundColor="#D9EE9A">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher"
android:background="#null"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Sample Text"
android:layout_gravity="center_vertical"
android:layout_marginLeft="50dp"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="15dp"
card_view:cardBackgroundColor="#D9EE9A">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher"
android:background="#null"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Sample Text"
android:layout_gravity="center_vertical"
android:layout_marginLeft="50dp"/>
</LinearLayout>
</android.support.v7.widget.CardView>
Use compile 'com.android.support:cardview-v7:25.0.0' to get the CardView.
this is the sample output.

use ListView or RecyclerView with your custom list item which will contain image buttons and custom adapter

Instead of px use dp it´s much better!
If you want a fixed list, your XML is correct, but if you want a dynamic list, you should use ListView or RecycleView , as the others users said.
The weight in your LinearLayout is wrong, weight should be used when you desires your screen to fit in every screen, no matter the size ( and you will need to "distribute" your weigth throught the children´s).
To make your screen similar to the first image, you need to set a background in your second LinearLayout

Okey this a recyclerview for what you want,
public class MainPageAdapter extends RecyclerView.Adapter<MainPageAdapter.ViewHolder> {
private #DrawableRes int[] iconDrawables;
private String[] texts;
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
final View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false);
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.img_lockIcon.setImageResource(iconDrawables[position]);
holder.txt_whatever.setText(texts[position]);
}
#Override
public int getItemCount() {
return iconDrawables != null ? iconDrawables.length : 0;
}
public void setData(#DrawableRes int[] iconDrawables, String[] texts){
this.iconDrawables = iconDrawables;
this.texts = texts;
this.notifyDataSetChanged();
}
public static class ViewHolder extends RecyclerView.ViewHolder {
ImageView img_icon;
TextView txt_whatever;
ImageView img_lockIcon;
public ViewHolder(View itemView) {
super(itemView);
img_icon = itemView.findViewById(R.id.item_img_icon);
txt_whatever = itemView.findViewById(R.id.item_txt_whatever);
img_lockIcon = itemView.findViewById(R.id.item_img_lockIcon);
}
}
}
this is R.layout.item,
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:padding="8dp"
android:background="#color/colorAccent"
xmlns:tools="http://schemas.android.com/tools">
<ImageView
android:id="#+id/item_img_icon"
android:layout_width="36dp"
android:layout_height="36dp"
tools:src="#mipmap/ic_launcher"/>
<TextView
android:id="#+id/item_txt_whatever"
android:layout_width="0dp"
android:layout_height="36dp"
android:layout_weight="1"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:textColor="#android:color/white"
tools:text="YouTube"/>
<ImageView
android:id="#+id/item_img_lockIcon"
android:layout_width="40dp"
android:layout_height="40dp"
tools:src="#mipmap/ic_launcher"/>
</LinearLayout>
and below is MainActivity layout,
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardCornerRadius="0dp"
app:cardElevation="0dp"
app:cardBackgroundColor="#color/colorPrimary"
android:layout_margin="8dp">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:listitem="#layout/item"/>
</android.support.v7.widget.CardView>
</FrameLayout>
and below is MainActivity,
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView recyclerView = findViewById(R.id.recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
MainPageAdapter adapter = new MainPageAdapter();
recyclerView.setAdapter(adapter);
//Set your data
//adapter.setData();
}
}
You can change color as you want and also notify that ı used two different arrays for adapter but you can use pojo classes also. Hope this helps you.

I want current layout to be changed so that I can scroll entire layout.

<LinearLayout
android:id="#+id/layout_question_detail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="gone">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="55dp"
>
<Button
android:id="#+id/btn_question_backButton"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/backicon_round"/>
<TextView
android:id="#+id/text_question_detail_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:textColor="#color/color_green"
android:text="Error"
android:textSize="19dp"
/>
</RelativeLayout>
<ImageView
android:id="#+id/image_question_detail_image"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:scaleType="centerCrop"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:layout_weight="2">
<TextView
android:id="#+id/text_question_detail_userComments"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:layout_marginBottom="25dp"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="3">
<ListView
android:id="#+id/list_question_detail_expComments"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="#android:color/transparent"
android:dividerHeight="10dp"></ListView>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
Now, I set layout for title on the top. Then, a Imageview, a textview and a listview follow below this layout, and only 1 textview is inside listview.
listview can vary in size.
The problem is, if the size of the listview is very big, I can only scroll the screen assigned to listview.
But, I want scroll the entire screen.
To solve this problem, I added scrollview outside of the first linearlayout.
However, It didn't work.(the imageview disappeared)
What can I do?

you can make your listview addheaderview,and put your imageview and textview into headerview
yourlayout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/layout_question_detail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="55dp">
<Button
android:id="#+id/btn_question_backButton"
android:layout_width="50dp"
android:layout_height="50dp" />
<TextView
android:id="#+id/text_question_detail_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="Error"
android:textColor="#000000"
android:textSize="19dp"
/>
</RelativeLayout>
<ListView
android:id="#+id/list_question_detail_expComments"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="#android:color/transparent"
android:dividerHeight="10dp"></ListView>
lv_header.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<ImageView
android:id="#+id/image_question_detail_image"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:scaleType="centerCrop" />
<TextView
android:id="#+id/text_question_detail_userComments"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="25dp"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:textSize="20dp" />
Activity.class
public class MainActivity extends AppCompatActivity {
private ListView list_question_detail_expComments;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list_question_detail_expComments = (ListView) findViewById(R.id.list_question_detail_expComments);
View lvHeaderView = View.inflate(this,R.layout.lv_header,null);
list_question_detail_expComments.addHeaderView(lvHeaderView);
list_question_detail_expComments.setAdapter(new LvAdapter());
}
private class LvAdapter extends BaseAdapter{
#Override
public int getCount() {
return 20;
}
#Override
public Object getItem(int i) {
return null;
}
#Override
public long getItemId(int i) {
return 0;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
TextView tv = new TextView(MainActivity.this);
tv.setText("test"+i);
return tv;
}
}
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

ScrollView not working with GridLayout in android studio - android

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I want current layout to be changed so that I can scroll entire layout.

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