there is two LinearLayouts header and footer in main activity
also RecyclerView inside swipeRefreshLayout between them
now i want to hide header and footer with use LayoutParam, but it shows gap after changing layoutParam and swipeRefreshLayout's height doesn't changes.
how to fix it?
I have try to solve your problem use the demo.
the xml file
<?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:background="#fff"
android:orientation="vertical">
<View
android:layout_width="match_parent"
android:layout_height="50dp"
android:onClick="click"
android:background="#fffe4a" />
<View
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:layout_marginTop="2dp"
android:background="#3489ff" />
<View
android:id="#+id/view_bottom"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#fffe4a" />
</LinearLayout>
the java file.
package com.example.wangze.instantdemo1;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void click(View view){
View view_bottom = findViewById(R.id.view_bottom);
LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) view_bottom.getLayoutParams();
layoutParams.height = 20;
view_bottom.setLayoutParams(layoutParams);
}
}
When i click the top view. The bottom is smaller,and not have gap. Maybe it can help you.
Related
I have one activity, and I set imageview element to match parent with one of my background image with dimensions: 1440x2560 . I need to make this image on fullscrean. But whenever I put that image using scaleType="fitXY" I get this:
XML layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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="com.backgroundApp.SecondActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:srcCompat="#drawable/background"
android:scaleType="fitXY"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="TextView"/>
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
Activity:
package com.backgroundApp;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class SecondActivity extends AppCompatActivity {
ActionBar actionBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
actionBar = getSupportActionBar();
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#004d40")));
}
}
Use adjustViewBounds=true property in ImageView tag like
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:srcCompat="#drawable/background"
android:adjustViewBounds="true"
android:scaleType="fitXY"/>
use setAdjustViewBounds
setAdjustViewBounds(boolean adjustViewBounds)
Set this to true if you want the ImageView to adjust its bounds to preserve the aspect ratio of its drawable.
<ImageView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:scaleType="fitXY"/>
or try to set programatically
imageView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
imageView.setAdjustViewBounds(true);
change
app:srcCompat="#drawable/background"
to
android:src="#drawable/xxxxx"
I am trying to make an app with Bottom Sheet. But when I run the app, the Bottom Sheet shows in main screen. It means, the Bottom Sheet appears in the main screen without clicking on the Button. An image has been attested below for clear understanding. sample image
This is the MainActivity.java class:
package com.example.qurdadzze.b;
import android.support.design.widget.BottomSheetBehavior;
import android.support.v4.widget.NestedScrollView;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
Button btn;
NestedScrollView bottomsheet;
BottomSheetBehavior behavior;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn = (Button) findViewById(R.id.btn);
bottomsheet = (NestedScrollView) findViewById(R.id.bottomsheet);
behavior = BottomSheetBehavior.from(bottomsheet);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(behavior.getState()==BottomSheetBehavior.STATE_COLLAPSED)
behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
else
behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
behavior.setPeekHeight(0);
}
});
}
And this is activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.example.qurdadzze.b.MainActivity">
<Button
android:id="#+id/btn"
android:layout_width="150dp"
android:layout_height="50dp"
android:text="show bottom sheet"/>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="300dp"
android:background="#99cc99"
android:elevation="100dp"
android:id="#+id/bottomsheet"
app:layout_behavior="#string/bottom_sheet_behavior">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="20sp"
android:layout_gravity="center|top"
android:gravity="center"
android:text="it is me Bottom Sheet"/>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
You will have to set peekheight of Bottomsheet.
android.support.design:behavior_peekHeight The height of the bottom sheet when it is collapsed.
Try using below code in your NestedScrollView:
app:behavior_peekHeight="50dp"
For more details check below link:
http://www.truiton.com/2016/07/android-bottom-sheet-example/
I have made an Android app containing a CoordinatorLayout with a AppBar and a NestedScrollView. In my NestedScrollView I have a list of items, and a button which scroll to an item in my NestedScrollView.
When clicking the button, the Android app scroll down to the item, but doesn't show the whole item, only partially: http://i.stack.imgur.com/8kuq0.png
I expected something like the following: http://i.stack.imgur.com/k0A5N.png
It seems like the amount the app needs to scroll is about the same size as the AppBar, in order to show the whole view. If I remove the scroll flag in my layout file below, I get the expected behavior.
What do I do wrong?
Update (12/01/2016): I've updated the pictures, so they are bigger. Furthermore as I wrote in Herry's response, I'm in doubt if View.requestRectangleOnScreen() is the right method to call, or if I should use a different layout then NestedScrollView.
My activity is coded as follows:
package com.example.sij.coordinatorlayoutbug;
import android.graphics.Rect;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
TextView itemToNavigateTo;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
itemToNavigateTo = (TextView)findViewById(R.id.itemToNavigateTo);
Button navigatorButton = (Button)findViewById(R.id.navigator_button);
navigatorButton.setOnClickListener(navigateToItemListener());
}
View.OnClickListener navigateToItemListener() {
return new View.OnClickListener() {
#Override
public void onClick(final View v) {
new Handler(Looper.getMainLooper()).post(new Runnable() {
#Override
public void run() {
itemToNavigateTo.requestRectangleOnScreen(
new Rect(
0,
0,
itemToNavigateTo.getWidth(),
itemToNavigateTo.getHeight()));
}
});
}
};
}
}
And the layout file:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Button
android:id="#+id/navigator_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/scroll_to_item" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/item1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/lorem_ipsum"
android:paddingBottom="20dp"/>
<!-- Items 2 to 5 omitted for brevity -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/item6"/>
<TextView
android:id="#+id/itemToNavigateTo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/lorem_ipsum"
android:paddingBottom="20dp"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
you need to add android:fillviewport="true" in your
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:fillViewport="true">
here is the code, please can anyone simply tell me how to make the onClick event run?
xml file of the activity, which has a navigation-drawer fragment, An Image view, A TextView, An ImageButton
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include
android:id="#+id/app_bar"
layout="#layout/app_bar" />
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignTop="#+id/drawer_layout"
android:adjustViewBounds="true"
android:contentDescription="#string/ContentDescriptionProfileImage"
android:src="#drawable/profile_pic" />
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/imageView"
android:background="#FFFFFF"
android:orientation="horizontal"
android:padding="5dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="45dp">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_gravity="center_vertical"
android:padding="3dp"
android:text="#string/profileName"
android:textColor="#000000"
android:textSize="18sp"
android:textStyle="bold" />
<ImageButton
android:id="#+id/profileSettings"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:background="#null"
android:contentDescription="#string/settingsIconDescription"
android:padding="8dp"
android:onClick="onSettingsIconPressed"
android:src="#drawable/settings32" />
</RelativeLayout>
</LinearLayout>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="#+id/app_bar">
<fragment
android:id="#+id/fragment_navigation_drawer"
android:name="studio25.materialdesign.NavigationDrawerFragment"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_gravity="start"
app:layout="#layout/fragment_navigation_drawer"
tools:layout="#layout/fragment_navigation_drawer"></fragment>
</android.support.v4.widget.DrawerLayout>
</RelativeLayout>
The image of the Screen Looks like this
here is the activity class
package studio25.materialdesign;
import android.annotation.TargetApi;
import android.os.Build;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.widget.PopupMenu;
import android.support.v7.widget.Toolbar;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ImageButton;
import android.widget.Toast;
public class ProfileView extends ActionBarActivity {
private Toolbar toolbar;
String title = "";
ImageButton setttingsButton;
#TargetApi(Build.VERSION_CODES.LOLLIPOP)
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile_view);
toolbar = (Toolbar) findViewById(R.id.app_bar);
setSupportActionBar(toolbar);
this.getSupportActionBar().setTitle(title);
getSupportActionBar().setDisplayShowHomeEnabled(true);
NavigationDrawerFragment drawerFragment = (NavigationDrawerFragment)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp((DrawerLayout) findViewById(R.id.drawer_layout), toolbar);
setttingsButton= (ImageButton) findViewById(R.id.profileSettings);
/*
Window window = this.getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
window.setStatusBarColor(this.getResources().getColor(R.color.primaryColor));
*/
}
public void onSettingsIconPressed(View v)
{
/*
PopupMenu popupMenu=new PopupMenu(this,v);
MenuInflater inflater=getMenuInflater();
inflater.inflate(R.menu.profile_settings_popup_menu,popupMenu.getMenu());
popupMenu.show();
*/
Toast.makeText(this,"Event Click Occured",Toast.LENGTH_SHORT).show();
}
}
I basically wanted a menu popup on buttonclick, but on debugging realized that my button click is not itself working.
Some tutotials say for popUp menu , minSdkVersion should be 11, even changed that.
Nothing is helping me.
Is my xml erroneous or what?
I usually like to hook up my callbacks in code (just my personal preference).
setttingsButton= (ImageButton) findViewById(R.id.profileSettings);
setttingsButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(this,"clicked!",Toast.LENGTH_SHORT).show();
}
});
With this you can remove the onClick attribute in the xml layout.
If you want a popup window then PopupWindow is a great option.
popupWindow = new PopupWindow(some_view_to_show, ViewGroup.LayoutParams.MATCH_PARENT, (int)popupHeight, false);
...
popupWindow.showAtLocation(view_to_inject_into, Gravity.NO_GRAVITY, 0, (size.y) - (int) popupHeight);
then you call popupWindow.dismiss(); to remove the popup
Your issue could also be that since you are using a RelativeLayout each element gets "stacked" on top of each other so you have essentially "buried" your ImageButton that you want to click on. So in other words some other view is blocking or consuming your clicks.
Try moving your ImageButton to be one of the last elements that you add to the xml file so that it is "on top" of everything else so that it can be clicked.
Alternatively you can try making the containing LinearLayout clickable instead of the ImageButton. So you would move the android:onClick="onSettingsIconPressed" attribute to the LinearLayout that contains the ImageButton.
The activity_main.xml is like this
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<Button
android:id="#+id/button_one_activity_one"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="First Button"
/>
<fragment
android:name="fragments.FirstFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/first_fragment" />
<Button
android:id="#+id/button_two_activity_one"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Second Button"
/>
</LinearLayout>
The main activity class is like this
package com.example.testfragmentshoneycomb;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
first_fragment.xml is like this
<?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"
android:background="#color/grey" >"
<TextView
android:id="#+id/text_view_one_fragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Text View one" />
<TextView
android:id="#+id/text_view_two_fragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Text View two" />
<TextView
android:id="#+id/text_view_three_fragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Text View three" />
</LinearLayout>
FirstFragment class is like this
package fragments;
import com.example.testfragmentshoneycomb.R;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class FirstFragment extends Fragment{
#Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.first_fragment, container, false);
return view;
}
}
It shows only first button and nothing else on the screen. If I remove the first button from activity_main.xml it shows the fragment but doesn't show the second button.
Min SDK version is 11 and build target is android 4.1
set android:orientation="vertical" in your activity layout.
Its because by default LinearLayout's orientation is horizontal. Therefore the whole screens width is captured by the First Button and Fragment.
Are you sure you want to see it like?
First_Button Fragment Second_Button
If Yes the use layout_weight. If No then give orientation=vertical to LinearLayout which will show your layout output as
First_Button
Fragment
Second_Button
set LinearLayout orientation to vertical, it's horizontal by default.
read docs carefully
Use the following layout :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="#+id/button_one_activity_one"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="First Button"
/>
<fragment
android:name="fragments.FirstFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/first_fragment" />
<Button
android:id="#+id/button_two_activity_one"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Second Button"
/>
</LinearLayout>