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      1 package com.android.wallpaperpicker.tileinfo;
      2 
      3 import android.Manifest;
      4 import android.content.Context;
      5 import android.content.Intent;
      6 import android.content.pm.PackageManager;
      7 import android.database.Cursor;
      8 import android.graphics.Bitmap;
      9 import android.graphics.PorterDuff;
     10 import android.os.Process;
     11 import android.provider.MediaStore;
     12 import android.view.LayoutInflater;
     13 import android.view.View;
     14 import android.view.ViewGroup;
     15 import android.widget.ImageView;
     16 
     17 import com.android.wallpaperpicker.R;
     18 import com.android.wallpaperpicker.WallpaperPickerActivity;
     19 
     20 public class PickImageInfo extends WallpaperTileInfo {
     21 
     22     @Override
     23     public void onClick(WallpaperPickerActivity a) {
     24         Intent intent = new Intent(Intent.ACTION_GET_CONTENT).setType("image/*");
     25         a.startActivityForResultSafely(intent, WallpaperPickerActivity.IMAGE_PICK);
     26     }
     27 
     28     @Override
     29     public View createView(Context context, LayoutInflater inflator, ViewGroup parent) {
     30         mView = inflator.inflate(R.layout.wallpaper_picker_image_picker_item, parent, false);
     31 
     32         // Make its background the last photo taken on external storage
     33         Bitmap lastPhoto = getThumbnailOfLastPhoto(context);
     34         if (lastPhoto != null) {
     35             ImageView galleryThumbnailBg =
     36                     (ImageView) mView.findViewById(R.id.wallpaper_image);
     37             galleryThumbnailBg.setImageBitmap(lastPhoto);
     38             int colorOverlay = context.getResources().getColor(R.color.wallpaper_picker_translucent_gray);
     39             galleryThumbnailBg.setColorFilter(colorOverlay, PorterDuff.Mode.SRC_ATOP);
     40         }
     41 
     42         mView.setTag(this);
     43         return mView;
     44     }
     45 
     46     private Bitmap getThumbnailOfLastPhoto(Context context) {
     47         boolean canReadExternalStorage = context.checkPermission(
     48                 Manifest.permission.READ_EXTERNAL_STORAGE, Process.myPid(), Process.myUid()) ==
     49                 PackageManager.PERMISSION_GRANTED;
     50 
     51         if (!canReadExternalStorage) {
     52             // MediaStore.Images.Media.EXTERNAL_CONTENT_URI requires
     53             // the READ_EXTERNAL_STORAGE permission
     54             return null;
     55         }
     56 
     57         Cursor cursor = MediaStore.Images.Media.query(context.getContentResolver(),
     58                 MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
     59                 new String[] { MediaStore.Images.ImageColumns._ID,
     60                     MediaStore.Images.ImageColumns.DATE_TAKEN},
     61                 null, null, MediaStore.Images.ImageColumns.DATE_TAKEN + " DESC LIMIT 1");
     62 
     63         Bitmap thumb = null;
     64         if (cursor != null) {
     65             if (cursor.moveToNext()) {
     66                 int id = cursor.getInt(0);
     67                 thumb = MediaStore.Images.Thumbnails.getThumbnail(context.getContentResolver(),
     68                         id, MediaStore.Images.Thumbnails.MINI_KIND, null);
     69             }
     70             cursor.close();
     71         }
     72         return thumb;
     73     }
     74 }