插入删除图片MediaScanner缓存问题

插入图片

ContentValues values = new ContentValues();   
    values.put(Images.Media.TITLE, filename);
    values.put(Images.Media.DATE_ADDED, System.currentTimeMillis()); 
    values.put(Images.Media.MIME_TYPE, "image/jpeg");

    Uri uri = this.getContentResolver().insert(Images.Media.EXTERNAL_CONTENT_URI, values);

当你打算在删掉时

File f = new File(imageURI);
    f.delete();

在gallery中就会出现占位符 主要是因为MediaScanner有一个缓存

sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory())));
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory())));

AndroidManifest.xml:

<intent-filter>
  <action android:name="android.intent.action.MEDIA_MOUNTED" />
  <data android:scheme="file" /> 
</intent-filter>
<intent-filter>
  <action android:name="android.intent.action.MEDIA_MOUNTED" />
  <data android:scheme="file" /> 
</intent-filter>