Your code seems to work fine. Did you see any errors in the logcat output? Did you specify the sdcard image?
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On Jul 28, 3:45 am, jaimin <jaiminmeht...@gmail.com> wrote: > hi. > > i can not view any image in my emulator screen > can anyone please tell me where i am doing wrong in my code. > > this is my code > > <?xml version="1.0" encoding="utf-8"?> > < manifest xmlns:android="http://schemas.android.com/apk/res/android"; > package="image.Thumbnails" android:versionCode="1" > android:versionName="1.0.0"> > < uses-permission > android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /> > < application android:icon="@drawable/icon" > android:label="@string/app_name"> > < activity android:name=".ImageThumbnailsActivity" > android:label="@string/app_name"> > < intent-filter> > < action > android:name="android.intent.action.MAIN" /> > < category > android:name="android.intent.category.LAUNCHER"/> > </intent-filter> > </activity> > < activity android:name=".ViewImage"> > < intent-filter> > < action > android:name="android.intent.action.VIEW" /> > < category > android:name="android.intent.category.DEFAULT" /> > </intent-filter> > </activity> > </application> > </manifest> > > package image.Thumbnails; > > import android.app.Activity; > import android.content.Context; > import android.content.Intent; > import android.database.Cursor; > import android.net.Uri; > import android.os.Bundle; > import android.provider.MediaStore; > 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.AdapterView.OnItemClickListener; > > public class ImageThumbnailsActivity extends Activity { > /** Called when the activity is first created. */ > private Cursor imagecursor, actualimagecursor; > private int image_column_index, actual_image_column_index; > GridView imagegrid; > private int count; > @Override > public void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > setContentView(R.layout.main); > init_phone_image_grid(); > } > private void init_phone_image_grid() { > String[] img = { MediaStore.Images.Thumbnails._ID }; > imagecursor = managedQuery( > MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, img, null, > null, MediaStore.Images.Thumbnails.IMAGE_ID + ""); > image_column_index = imagecursor > .getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID); > count = imagecursor.getCount(); > imagegrid = (GridView) findViewById(R.id.PhoneImageGrid); > imagegrid.setAdapter(new ImageAdapter(getApplicationContext > ())); > imagegrid.setOnItemClickListener(new OnItemClickListener() > { > public void onItemClick(AdapterView parent, View v, > int position, long id) { > System.gc(); > String[] proj = > { MediaStore.Images.Media.DATA }; > actualimagecursor = managedQuery( > MediaStore.Images.Media.EXTERNAL_CONTENT_URI, proj, > null, null, null); > actual_image_column_index = actualimagecursor > .getColumnIndexOrThrow(MediaStore.Images.Media.DATA); > actualimagecursor.moveToPosition(position); > String i = actualimagecursor.getString > (actual_image_column_index); > System.gc(); > Intent intent = new Intent > (getApplicationContext(), ViewImage.class); > intent.putExtra("filename", i); > startActivity(intent); > } > }); > } > > public class ImageAdapter extends BaseAdapter { > private Context mContext; > public ImageAdapter(Context c) { > mContext = c; > } > public int getCount() { > return count; > } > public Object getItem(int position) { > return position; > } > public long getItemId(int position) { > return position; > } > public View getView(int position,View > convertView,ViewGroup parent) { > System.gc(); > ImageView i = new ImageView > (mContext.getApplicationContext()); > if (convertView == null) { > imagecursor.moveToPosition(position); > int id = imagecursor.getInt > (image_column_index); > i.setImageURI(Uri.withAppendedPath( > MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, "" > + id)); > i.setScaleType > (ImageView.ScaleType.CENTER_CROP); > i.setLayoutParams(new GridView.LayoutParams > (92, 92)); > } > else { > i = (ImageView) convertView; > } > return i; > } > } > > } > > // By selecting the thumbnails user can view the actual image. > package image.Thumbnails; > > import android.os.Bundle; > import android.widget.ImageView; > import android.app.Activity; > import android.content.Intent; > import android.graphics.Bitmap; > import android.graphics.BitmapFactory; > > public class ViewImage extends Activity { > private String filename; > @Override > public void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > System.gc(); > Intent i = getIntent(); > Bundle extras = i.getExtras(); > BitmapFactory.Options bfo = new BitmapFactory.Options(); > bfo.inSampleSize = 2; > filename = extras.getString("filename"); > ImageView iv = new ImageView(getApplicationContext()); > Bitmap bm = BitmapFactory.decodeFile(filename, bfo); > iv.setImageBitmap(bm); > setContentView(iv); > } > > } > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. 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