AndroidRuntime: FATAL EXCEPTION: main id is not going

AndroidRuntime: FATAL EXCEPTION: main id is not going - android

I was trying to practice to use GridView in Android Studio, I don't know why I keep getting this exception.
Here is the code of my main class.
package com.example.chetam.gokalsapp;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;
public class Products extends Activity {
GridView grid;
String[] web = {
"Google",
"Github",
"Instagram",
"Facebook",
"Flickr",
"Pinterest",
"Quora",
"Twitter",
"Vimeo",
"WordPress",
"Youtube",
"Stumbleupon",
"SoundCloud",
"Reddit",
"Blogger"
} ;
int[] imageId = {
R.drawable.v,
R.drawable.img,
R.drawable.img1,
R.drawable.img2,
R.drawable.img3,
R.drawable.v,
R.drawable.img,
R.drawable.img1,
R.drawable.img2,
R.drawable.img3,
R.drawable.v,
R.drawable.img,
R.drawable.img1,
R.drawable.img2,
R.drawable.img3
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_products);
grid=(GridView)findViewById(R.id.grid);
CustomGrid adapter = new CustomGrid(Products.this, web, imageId);
grid.setAdapter(adapter);
grid.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(Products.this, "You Clicked at " +web[+ position], Toast.LENGTH_SHORT).show();
}
});
}
}
Here is the code of my main XML file
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.chetam.gokalsapp.Products">
<GridView
android:numColumns="auto_fit"
android:gravity="center"
android:columnWidth="100dp"
android:stretchMode="columnWidth"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/grid"
/>
</RelativeLayout>
Here is my layout 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:padding="5dp"
android:gravity="center_horizontal"
android:orientation="vertical">
<ImageView
android:id="#+id/grid_image"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginTop="15dp">
</ImageView>
<TextView
android:id="#+id/grid_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:textSize="12sp" >
</TextView>
</LinearLayout>
here is my adapter class
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class CustomGrid extends BaseAdapter{
private Context mContext;
private final String[] web;
private final int[] Imageid;
public CustomGrid(Context c,String[] web,int[] Imageid ) {
mContext = c;
this.Imageid = Imageid;
this.web = web;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return web.length;
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View grid;
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
grid = new View(mContext);
grid = inflater.inflate(R.layout.grid_single, null);
TextView textView = (TextView) grid.findViewById(R.id.grid_text);
ImageView imageView = (ImageView)grid.findViewById(R.id.grid_image);
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8,8,8,8);
textView.setText(web[position]);
imageView.setImageResource(Imageid[position]);
}
else
{
grid = (View) convertView;
}
return grid;
}
}

Replace grid onClickListener with:
grid.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(Products.this, "You Clicked at " +web[position], Toast.LENGTH_SHORT).show();
}
});
You are using an integer variable for the position of the String array. If you had '+ position' because you wanted one number higher than the position, then the correct syntax is:
grid.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(Products.this, "You Clicked at " +web[position + 1], Toast.LENGTH_SHORT).show();
}
});

Related

How to select item in the list view programmatically

I have an ArrayList<String> List which contains some items from the listview all_list. How can I select these items in the list view all_list programmatically by checking the ArrayList<String> List contents?
for e.g., listview all_list contains [0] apple
[1] orange
[2] banana
In ArrayList<String> List, I have orange so I want item on position 1 on the listview all_list to be selected (highlighted) automatically.
I have tried using all_list.setItemChecked(), but it does nothing and shuts down the application. I am performing the operation after listing the adapter.

set an onItemClickListener to the listview such that on click, you set a boolean flag that sets the checkbox in each row to selected. then call notifyDataSetChanged()

Try this
MainActivity.java
package com.example.multiseekbar;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
public class MainActivity extends Activity {
ListView listView1;
ArrayList<ModelClass> modelClass = new ArrayList<ModelClass>();
FruitSelectAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
modelClass.add(new ModelClass("Orange", true));
modelClass.add(new ModelClass("Apple", false));
modelClass.add(new ModelClass("Banana", false));
modelClass.add(new ModelClass("Grapes", false));
listView1 = (ListView) findViewById(R.id.listView1);
adapter = new FruitSelectAdapter(MainActivity.this, modelClass);
listView1.setAdapter(adapter);
listView1.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
if(modelClass.get(arg2).isSelected()){
modelClass.get(arg2).setSelected(false);
}else{
modelClass.get(arg2).setSelected(true);
}
adapter.notifyDataSetChanged();
}
});
}
}
activity_main.xml
<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"
tools:context="com.example.multiseekbar.MainActivity" >
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="fill_parent"
>
</ListView>
</RelativeLayout>
FruitSelectAdapter.java
package com.example.multiseekbar;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.TextView;
public class FruitSelectAdapter extends BaseAdapter
{
private Activity activity;
private LayoutInflater inflater;
private ArrayList<ModelClass> modelClass=null;
public FruitSelectAdapter(Activity activity, ArrayList<ModelClass> modelClass) {
this.activity = activity;
this.modelClass = modelClass;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return modelClass.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return modelClass.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
final ViewHolder holder;
if (inflater == null)
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
holder =new ViewHolder();
convertView = inflater.inflate(R.layout.row1, null);
holder.txtFruitName = (TextView)convertView.findViewById(R.id.txtFruitName);
holder.cbFruitSelectStatus = (CheckBox)convertView.findViewById(R.id.cbFruitSelectStatus);
holder.linLayBackground = (LinearLayout) convertView.findViewById(R.id.linLayBackground);
convertView.setTag(holder);
}else{
holder = (ViewHolder)convertView.getTag();
}
holder.txtFruitName.setText(modelClass.get(position).getFruitName());
holder.cbFruitSelectStatus.setChecked(modelClass.get(position).isSelected());
if(modelClass.get(position).isSelected()){
holder.linLayBackground.setBackgroundColor(Color.parseColor("#80ccff"));
}else{
holder.linLayBackground.setBackgroundColor(Color.parseColor("#FFFFFF"));
}
return convertView;
}
class ViewHolder{
TextView txtFruitName;
CheckBox cbFruitSelectStatus;
LinearLayout linLayBackground;
}
}
row1.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:id="#+id/linLayBackground"
android:layout_height="70dp"
android:orientation="horizontal"
>
<TextView
android:id="#+id/txtFruitName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Fruit name"
android:layout_weight="1"
android:textSize="16sp"
android:textColor="#000000" />
<CheckBox
android:id="#+id/cbFruitSelectStatus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false" />
</LinearLayout>
ModelClass.java
package com.example.multiseekbar;
public class ModelClass {
String fruitName;
boolean isSelected=false;
public ModelClass(String fruitName, boolean isSelected) {
this.fruitName = fruitName;
this.isSelected = isSelected;
}
public String getFruitName() {
return fruitName;
}
public void setFruitName(String fruitName) {
this.fruitName = fruitName;
}
public boolean isSelected() {
return isSelected;
}
public void setSelected(boolean isSelected) {
this.isSelected = isSelected;
}
}

Custom ListView not showing any items

I am trying to display a custom listview but nothing appears.
My activity:
import java.util.ArrayList;
import org.json.JSONArray;
import org.json.JSONException;
import com.example.elnoorgeh.ServerAPI;
import android.app.Fragment;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView.FindListener;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
public class BlogFragment extends Fragment {
JSONArray jArray;
TextView title;
RelativeLayout layout;
int previousID = 0;
int currentID = 0;
ArrayList<String> titles;
ArrayList<String> contents;
ListView list;
public BlogFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_blog, container,
false);
new AsyncFetch().execute();
return rootView;
}
private class AsyncFetch extends AsyncTask<Object, Object, Object> {
#Override
protected Object doInBackground(Object... params) {
// TODO Auto-generated method stub
jArray = new JSONArray();
jArray = ServerAPI.getData();
titles = new ArrayList<String>();
contents = new ArrayList<String>();
for (int i = 0; i < jArray.length(); i++) {
String blogTitle = null;
String content = null;
try {
blogTitle = jArray.getJSONObject(i).getString("title");
content = jArray.getJSONObject(i).getString("content");
titles.add(blogTitle);
contents.add(content);
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println(blogTitle);
System.out.println(content);
}
// display(titles, contents);
return null;
}
protected void onPostExecute(Object result) {
layout = (RelativeLayout) getView().findViewById(R.id.blogPage);
layout.removeAllViews();
CustomList adapter = new CustomList(getActivity(), titles);
list = new ListView(getActivity());
System.out.println("list done");
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(getActivity(),
"You Clicked at " + titles.get(position),
Toast.LENGTH_SHORT).show();
}
});
}
}
public void display(ArrayList<String> t, ArrayList<String> c) {
}
}
Custom ListView class:
import java.util.ArrayList;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class CustomList extends ArrayAdapter<String> {
private final Activity context;
private final ArrayList<String> web;
// private final Integer[] imageId;
public CustomList(Activity context, ArrayList<String>web) {
super(context, R.layout.fragment_listview);
this.context = context;
this.web = web;
// this.imageId = imageId;
}
#Override
public View getView(int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View rowView = inflater.inflate(R.layout.fragment_listview, null, true);
TextView txtTitle = (TextView) rowView.findViewById(R.id.txt);
ImageView imageView = (ImageView) rowView.findViewById(R.id.img);
txtTitle.setText((CharSequence) web.get(position));
// imageView.setImageResource(imageId[position]);
return rowView;
}
}
fragment_blog:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/blogPage"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
<TextView
android:id="#+id/txtLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:maxLines="20"
android:singleLine="false"
android:textSize="16dp" />
</RelativeLayout>
fragment_listview:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TableRow>
<ImageView
android:id="#+id/img"
android:layout_width="50dp"
android:layout_height="50dp" />
<TextView
android:id="#+id/txt"
android:layout_width="wrap_content"
android:layout_height="50dp" />
</TableRow>
</TableLayout>
I can't find any errors or notice something irregular, so why is that happening?

you should extend BaseAdapter and implement abstract methods
#Override
public int getCount() {
return web.size();
}
#Override
public Object getItem(int position) {
return web.get(position);
}
#Override
public long getItemId(int position) {
return 0;
}
also you might change
txtTitle.setText((CharSequence) web.get(position));
to
txtTitle.setText((CharSequence) getItem(position));
now your adapter don't know size of web array
edit:
you can get one inflater in constructor and keep in class, no need to getting inflater each time (little bit better for perfomance)
LayoutInflater inflater = context.getLayoutInflater();
edit 2:
localhost put proper comment - you are removing all Views from RelativeLayout, also ListView, and creating new ListView without adding to Relative. keeping reference will not auto-add View
protected void onPostExecute(Object result) {
layout = (RelativeLayout) getView().findViewById(R.id.blogPage);
layout.removeView(getView().findViewById(R.id.txtLabel);
//assuming you need to remove only txtLabel
CustomList adapter = new CustomList(getActivity(), titles);
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(getActivity(),
"You Clicked at " + titles.get(position),
Toast.LENGTH_SHORT).show();
}
});
}

What is wrong with my code ( Gallery in Fragment )

I am new in android..
Can someone tell me what is wrong with my code? I am trying to make gallery in Fragment. When I install the apk file on the device, the program works but in that Fragment I see white screen instead of Gallery.Please help me :)
That is my Fragment class
package info.androidhive.fitnesslascalla;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
public class ForUsFragment extends Fragment{
public class MainActivity extends Activity
{
ImageView selectedImage;
private Integer[] mImageIds = {
R.drawable.car1,
R.drawable.car2,
R.drawable.car3,
R.drawable.car4,
R.drawable.car5,
R.drawable.car6,
R.drawable.car7,
R.drawable.car8
};
public View onCreateView(LayoutInflater inflater, ViewGroup parent,
Bundle saedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_for_us, parent, false);
//setContentView(R.layout.fragment_for_us);
Gallery gallery = (Gallery) findViewById(R.id.gallery1);
selectedImage=(ImageView)findViewById(R.id.image1);
gallery.setSpacing(1);
gallery.setAdapter(new GalleryImageAdapter(this));
// clicklistener for Gallery
gallery.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
Toast.makeText(MainActivity.this, "Your selected position = " + position, Toast.LENGTH_SHORT).show();
// show the selected Image
selectedImage.setImageResource(mImageIds[position]);
}
});
return rootView;
}
}
public class GalleryImageAdapter extends BaseAdapter
{
private Context mContext;
private Integer[] mImageIds = {
R.drawable.car1,
R.drawable.car2,
R.drawable.car3,
R.drawable.car4,
R.drawable.car5,
R.drawable.car6,
R.drawable.car7,
R.drawable.car8
};
public GalleryImageAdapter(Context context)
{
mContext = context;
}
public int getCount() {
return mImageIds.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
// Override this method according to your need
public View getView(int index, View view, ViewGroup viewGroup)
{
// TODO Auto-generated method stub
ImageView i = new ImageView(mContext);
i.setImageResource(mImageIds[index]);
i.setLayoutParams(new Gallery.LayoutParams(200, 200));
i.setScaleType(ImageView.ScaleType.FIT_XY);
return i;
}
}
}
and that is my Layout for that fragment
<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"
tools:context="{relativePackage}.${activityClass}"
android:orientation="vertical" >
<Gallery
android:id="#+id/gallery1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<ImageView
android:id="#+id/image1"
android:layout_width="215dp"
android:layout_height="315dp"
android:layout_gravity="center_horizontal"
android:background="#cfcfcf"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:src="#drawable/car1"
android:contentDescription="#null" />
</LinearLayout>

Problem with your Getview mathod
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
holder = new ViewHolder();
imageView = new ImageView(this.context);
imageView.setPadding(3, 3, 3, 3);
convertView = imageView;
holder.imageView = imageView;
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.imageView.setImageDrawable(plotsImages.get(position));
holder.imageView.setScaleType(ImageView.ScaleType.FIT_XY);
holder.imageView.setLayoutParams(new Gallery.LayoutParams(150, 90));
return imageView;
}
private static class ViewHolder {
ImageView imageView;
}

Change the Gallery View for the button clicked in android

I have three buttons Image , Videos , Audios. I want to change the views in gallery with the audios , videos , images resources when corresponding button clicked so that only related image of the buttons appear in gallery.
My code is here:
XML layout:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Audios" >
</Button>
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Videos" >
</Button>
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Images" >
</Button>
</LinearLayout>
<Gallery
android:id="#+id/Gallery01"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
</Gallery>
</LinearLayout>
<ImageView
android:id="#+id/ImageView01"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</ImageView>
Java file:
public class GalleryView extends Activity {
Integer[] pics = {
R.drawable.cloudy,
R.drawable.hazy,
R.drawable.mostlycloudyday,
R.drawable.partlycloud,
R.drawable.sunny,
R.drawable.sunrain,
R.drawable.thunderstorm,
R.drawable.weathercloudy,
};
ImageView imageView;
Button mAudio;
Button mVideo;
Button mImages;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mAudio=(Button) findViewById(R.id.button1);
Gallery ga = (Gallery)findViewById(R.id.Gallery01);
ga.setAdapter(new ImageAdapter(this));
imageView = (ImageView)findViewById(R.id.ImageView01);
ga.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int pos,
long arg3) {
Toast.makeText(getBaseContext(),
"You have selected picture " + (pos+1) + "of Gallery",
Toast.LENGTH_SHORT).show();
imageView.setImageResource(pics[pos]);
}
});
}
public class ImageAdapter extends BaseAdapter {
private Context ctx;
int imageBackground;
public ImageAdapter(Context c) {
ctx = c;
TypedArray ta = obtainStyledAttributes(R.styleable.Gallery1);
imageBackground = ta.getResourceId(R.styleable.Gallery1_android_galleryItemBackground, 1);
ta.recycle();
}
#Override
public int getCount() {
return pics.length;
}
#Override
public Object getItem(int arg0) {
return arg0;
}
#Override
public long getItemId(int arg0) {
return arg0;
}
#Override
public View getView(int arg0, View arg1, ViewGroup arg2) {
ImageView iv = new ImageView(ctx);
iv.setImageResource(pics[arg0]);
iv.setScaleType(ImageView.ScaleType.FIT_XY);
iv.setLayoutParams(new Gallery.LayoutParams(150,120));
iv.setBackgroundResource(imageBackground);
return iv;
}
}
}
Anybody please help me with this,
Thanks.

For the changing the image in gallery, you must change the Resources image id in array. e.g change image for videos in int[] video_pics and so on.
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
public class GalleryView extends Activity implements OnClickListener {
int[] image_pics = { R.drawable.cloudy, R.drawable.hazy, R.drawable.mostlycloudyday, R.drawable.partlycloud,
R.drawable.sunny, R.drawable.sunrain, R.drawable.thunderstorm, R.drawable.weathercloudy, };
int[] video_pics = { R.drawable.cloudy, R.drawable.hazy, R.drawable.mostlycloudyday, R.drawable.partlycloud,
R.drawable.sunny, R.drawable.sunrain, R.drawable.thunderstorm, R.drawable.weathercloudy, };
int[] audio_pics = { R.drawable.cloudy, R.drawable.hazy, R.drawable.mostlycloudyday, R.drawable.partlycloud,
R.drawable.sunny, R.drawable.sunrain, R.drawable.thunderstorm, R.drawable.weathercloudy, };
ImageView imageView;
Button mAudio;
Button mVideo;
Button mImages;
ImageAdapter galleryAdapter;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mAudio = (Button) findViewById(R.id.button1);
mVideo = (Button) findViewById(R.id.button2);
mImages = (Button) findViewById(R.id.button3);
mAudio.setOnClickListener(this);
mVideo.setOnClickListener(this);
mImages.setOnClickListener(this);
Gallery ga = (Gallery) findViewById(R.id.Gallery01);
galleryAdapter = new ImageAdapter(this);
galleryAdapter.setResourseArray(image_pics);
ga.setAdapter(galleryAdapter);
imageView = (ImageView) findViewById(R.id.ImageView01);
ga.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int pos, long arg3) {
Toast.makeText(getBaseContext(), "You have selected picture " + (pos + 1) + "of Gallery", Toast.LENGTH_SHORT)
.show();
imageView.setImageResource(pics[pos]);
}
});
}
#Override
public void onClick(View view) {
if (view == mAudio) {
if (galleryAdapter != null) {
galleryAdapter.setResourseArray(audio_pics);
galleryAdapter.notifyDataSetChanged();
}
} else if (view == mVideo) {
if (galleryAdapter != null) {
galleryAdapter.setResourseArray(video_pics);
galleryAdapter.notifyDataSetChanged();
}
} else if (view == mImages) {
if (galleryAdapter != null) {
galleryAdapter.setResourseArray(image_pics);
galleryAdapter.notifyDataSetChanged();
}
}
}
public class ImageAdapter extends BaseAdapter {
private Context ctx;
int imageBackground;
private int[] resourseArray = null;
public ImageAdapter(Context c) {
ctx = c;
TypedArray ta = obtainStyledAttributes(R.styleable.Gallery1);
imageBackground = ta.getResourceId(R.styleable.Gallery1_android_galleryItemBackground, 1);
ta.recycle();
}
#Override
public int getCount() {
return resourseArray.length;
}
public int[] getResourseArray() {
return resourseArray;
}
public void setResourseArray(int[] resourseArray) {
this.resourseArray = resourseArray;
}
#Override
public Object getItem(int arg0) {
return arg0;
}
#Override
public long getItemId(int arg0) {
return arg0;
}
#Override
public View getView(int position, View arg1, ViewGroup arg2) {
ImageView iv = new ImageView(ctx);
iv.setImageResource(resourseArray[position]);
iv.setScaleType(ImageView.ScaleType.FIT_XY);
iv.setLayoutParams(new Gallery.LayoutParams(150, 120));
iv.setBackgroundResource(imageBackground);
return iv;
}
}
}

Button.onClickEvent -> ga.setSelection(int postion);

Android gallery get image name

In the below code i have created a gallery object and also have included a image view,on click of image how to get the image name and load it in image view.I have also included main.xml
package HelloGallery.com;
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
public class HelloGalleryActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final ImageView iv=(ImageView) findViewById(R.id.imageView1);
iv.setVisibility(View.INVISIBLE);
Gallery g = (Gallery) findViewById(R.id.gallery);
g.setAdapter(new ImageAdapter(this));
g.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position, long id) {
Toast.makeText(HelloGalleryActivity.this, "" + position, Toast.LENGTH_SHORT).show();
iv.setVisibility(View.VISIBLE);
iv.setsource("android:src="#drawable/"+imagename); //how to do this
}
});
}
public class ImageAdapter extends BaseAdapter {
int mGalleryItemBackground;
private Context mContext;
private Integer[] mImageIds = {
R.drawable.sample_1,
R.drawable.sample_2,
R.drawable.sample_3
};
public ImageAdapter(Context c) {
mContext = c;
TypedArray a = obtainStyledAttributes(R.styleable.HelloGallery);
mGalleryItemBackground = a.getResourceId(
R.styleable.HelloGallery_android_galleryItemBackground, 0);
a.recycle();
}
public int getCount() {
return mImageIds.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView i = new ImageView(mContext);
i.setImageResource(mImageIds[position]);
i.setLayoutParams(new Gallery.LayoutParams(150, 100));
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setBackgroundResource(mGalleryItemBackground);
return i;
}
/* public View getView(int arg0, View arg1, ViewGroup arg2) {
// TODO Auto-generated method stub
return null;
}*/
}
}
Main.mxml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/hello"
/>
<Gallery xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/gallery"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<ImageView android:layout_width="wrap_content" android:id="#+id/imageView1" android:layout_height="wrap_content" ></ImageView>
</LinearLayout>

Try this,
Drawable d=getResources().getDrawable(R.drawable.icon);
iv.setImageDrawable(d);

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.

AndroidRuntime: FATAL EXCEPTION: main id is not going - android

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