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      1 package js.kbars;
      2 
      3 import android.app.Activity;
      4 import android.content.Intent;
      5 import android.graphics.Bitmap;
      6 import android.graphics.Bitmap.CompressFormat;
      7 import android.graphics.BitmapFactory;
      8 import android.graphics.drawable.BitmapDrawable;
      9 import android.view.Menu;
     10 import android.view.MenuItem;
     11 import android.view.MenuItem.OnMenuItemClickListener;
     12 import android.view.View;
     13 import java.io.File;
     14 import java.io.FileNotFoundException;
     15 import java.io.FileOutputStream;
     16 import java.io.IOException;
     17 
     18 public final class CameraBackgroundMenuItem implements OnMenuItemClickListener {
     19     public static final int REQUEST_CODE = 123;
     20     private final Activity mActivity;
     21     private final View mTarget;
     22 
     23     public CameraBackgroundMenuItem(Menu menu, Activity activity, View target) {
     24         this.mActivity = activity;
     25         this.mTarget = target;
     26         menu.add("Camera image background...").setOnMenuItemClickListener(this);
     27         loadBitmap();
     28     }
     29 
     30     public boolean onMenuItemClick(MenuItem item) {
     31         chooseBackground();
     32         return true;
     33     }
     34 
     35     public void onActivityResult(int resultCode, Intent data) {
     36         if (resultCode == -1) {
     37             Bitmap bitmap = (Bitmap) data.getParcelableExtra("data");
     38             if (bitmap != null) {
     39                 setTargetBackground(bitmap);
     40                 saveBitmap(bitmap);
     41             }
     42         }
     43     }
     44 
     45     private void chooseBackground() {
     46         this.mActivity.startActivityForResult(new Intent("android.media.action.IMAGE_CAPTURE"), REQUEST_CODE);
     47     }
     48 
     49     private File bitmapFile() {
     50         return new File(this.mActivity.getCacheDir(), "background.png");
     51     }
     52 
     53     private void saveBitmap(Bitmap bitmap) {
     54         FileNotFoundException e;
     55         Throwable th;
     56         File f = bitmapFile();
     57         if (f.exists()) {
     58             f.delete();
     59         }
     60         if (bitmap != null) {
     61             FileOutputStream out = null;
     62             try {
     63                 FileOutputStream out2 = new FileOutputStream(f);
     64                 bitmap.compress(CompressFormat.PNG, 100, out2);
     65                 out2.close();
     66             } catch (FileNotFoundException e1) {
     67                 e1.printStackTrace();
     68             } catch (IOException e1) {
     69                 e1.printStackTrace();
     70             }
     71         }
     72     }
     73 
     74     private void loadBitmap() {
     75         Bitmap bitmap = loadBitmapFromCache();
     76         if (bitmap == null) {
     77             bitmap = loadBitmapFromAssets();
     78         }
     79         setTargetBackground(bitmap);
     80     }
     81 
     82     private Bitmap loadBitmapFromCache() {
     83         File f = bitmapFile();
     84         return f.exists() ? BitmapFactory.decodeFile(f.getAbsolutePath()) : null;
     85     }
     86 
     87     private Bitmap loadBitmapFromAssets() {
     88         try {
     89             return BitmapFactory.decodeStream(this.mActivity.getAssets().open("background.png"));
     90         } catch (IOException e) {
     91             throw new RuntimeException(e);
     92         }
     93     }
     94 
     95     private void setTargetBackground(Bitmap bitmap) {
     96         if (bitmap == null) {
     97             this.mTarget.setBackground(null);
     98         } else {
     99             this.mTarget.setBackground(new BitmapDrawable(this.mActivity.getResources(), bitmap));
    100         }
    101     }
    102 }
    103