爲什麼不能在ImageView（Android）上顯示某些圖像？

Question

當我從我的畫廊中選擇一張圖片時，會顯示屏幕截圖，但不會顯示從相機拍攝的一些圖片。

更具體地說，使用Camera360拍攝的照片無法顯示使用Camera360拍攝的照片。

我不知道我的代碼是否有問題。如果沒有，可能是因爲我的手機？

在此先感謝。對不起，我的英語不太好。

private static final int SELECT_PICTURE = 1; 

private String selectedImagePath; 
private ImageView img; 

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_get_image); 

    ((Button) findViewById(R.id.Button01)) 
      .setOnClickListener(new OnClickListener() { 
       public void onClick(View arg0) { 
        Intent intent = new Intent(); 
        intent.setType("image/*"); 
        intent.setAction(Intent.ACTION_GET_CONTENT); 
        startActivityForResult(
          Intent.createChooser(intent, "Select Picture"), 
          SELECT_PICTURE); 
       } 
      }); 
} 

public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    if (resultCode == RESULT_OK) { 
     if (requestCode == SELECT_PICTURE) { 
      img = (ImageView) findViewById(R.id.ImageView01); 
      Uri selectedImageUri = data.getData(); 

      selectedImagePath = getPath(selectedImageUri); 
      System.out.println("Image Path : " + selectedImagePath); 
      Drawable image; 
      try { 
       InputStream inputStream = getContentResolver() 
         .openInputStream(selectedImageUri); 
       image = Drawable.createFromStream(inputStream, "file///" 
         + selectedImagePath.toString()); 
      } catch (FileNotFoundException e) { 
       image = getResources().getDrawable(R.drawable.ic_launcher); 
      } 
      img.setImageDrawable(null); 
      img.setImageDrawable(image); 

     } 
    } 
} 

public String getPath(Uri uri) { 
    String[] projection = { MediaStore.Images.Media.DATA }; 
    @SuppressWarnings("deprecation") 
    Cursor cursor = managedQuery(uri, projection, null, null, null); 
    int column_index = cursor 
      .getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
    cursor.moveToFirst(); 
    return cursor.getString(column_index); 
} 

Answer 1

哦，我發現了這個問題。我的圖片太大了。

private static Context context; 

private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100; 
private static final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 200; 

public static final int MEDIA_TYPE_IMAGE = 1; 
public static final int MEDIA_TYPE_VIDEO = 2; 

private static final int SELECT_PICTURE = 3; 

private String selectedImagePath; 
private static String imageFilePath; 
private static String videoFilePath; 
private Uri fileUri; 

private Bitmap bitmap; 

private Button btnGallery, btnCamera; 

private Intent selectPictureIntent; 

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_get_image); 

    context = this; 

    btnGallery = (Button) findViewById(R.id.Button01); 
    btnCamera = (Button) findViewById(R.id.Button02); 

    btnGallery.setOnClickListener(this); 
    btnCamera.setOnClickListener(this); 
} 

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    if (resultCode == RESULT_OK) { 
     if (requestCode == SELECT_PICTURE) { 
      Uri selectedImageUri = data.getData(); 
      Log.d("bitmap", selectedImageUri.getScheme()); 
      selectedImagePath = getPath(selectedImageUri); 
      if (selectedImagePath != null) { 
       // Selected image is local image 
       Bitmap b = new BitmapDrawable(context.getResources(), 
         selectedImagePath).getBitmap(); 
       int i = (int) (b.getHeight() * (512.0/b.getWidth())); 
       bitmap = Bitmap.createScaledBitmap(b, 512, i, true); 
      } else { 
       // Selected image is Picasa image 
       loadPicasaImageFromGallery(selectedImageUri); 
      } 
      ImageView img = (ImageView) findViewById(R.id.ImageView01); 
      img.setImageBitmap(bitmap); 
     } 
    } 

    if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) { 
     if (resultCode == RESULT_OK) { 
      // Image captured and saved to fileUri specified in the Intent 
      addImageToGallery(imageFilePath, context); 
     } else if (resultCode == RESULT_CANCELED) { 
      // User cancelled the image capture 
     } else { 
      // Image capture failed, advise user 
     } 
    } 

    if (requestCode == CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE) { 
     if (resultCode == RESULT_OK) { 
      // Video captured and saved to fileUri specified in the Intent 
      addVideoToGallery(videoFilePath, context); 
     } else if (resultCode == RESULT_CANCELED) { 
      // User cancelled the video capture 
     } else { 
      // Video capture failed, advise user 
     } 
    } 
} 

public Bitmap getBitmapFromUri(Uri uri) throws IOException { 
    ParcelFileDescriptor parcelFileDescriptor = getContentResolver() 
      .openFileDescriptor(uri, "r"); 
    FileDescriptor fileDescriptor = parcelFileDescriptor 
      .getFileDescriptor(); 
    Bitmap image = BitmapFactory.decodeFileDescriptor(fileDescriptor); 
    parcelFileDescriptor.close(); 
    return image; 
} 

public String getPath(Uri uri) { 
    String[] projection = { MediaColumns.DATA }; 
    Cursor cursor = getContentResolver().query(uri, projection, null, null, 
      null); 
    if (cursor != null) { 
     cursor.moveToFirst(); 
     int columnIndex = cursor.getColumnIndexOrThrow(MediaColumns.DATA); 
     String filePath = cursor.getString(columnIndex); 
     cursor.close(); 
     return filePath; 
    } else 
     return uri.getPath(); 
} 

private void loadPicasaImageFromGallery(final Uri uri) { 
    String[] projection = { MediaColumns.DATA, MediaColumns.DISPLAY_NAME }; 
    Cursor cursor = getContentResolver().query(uri, projection, null, null, 
      null); 
    if (cursor != null) { 
     cursor.moveToFirst(); 

     int columnIndex = cursor.getColumnIndex(MediaColumns.DISPLAY_NAME); 
     if (columnIndex != -1) { 
      new Thread(new Runnable() { 
       // NEW THREAD BECAUSE NETWORK REQUEST WILL BE MADE THAT WILL 
       // BE A LONG PROCESS & BLOCK UI 
       // IF CALLED IN UI THREAD 
       public void run() { 
        try { 
         Bitmap bm = android.provider.MediaStore.Images.Media 
           .getBitmap(getContentResolver(), uri); 
         int i = (int) (bm.getHeight() * (512.0/bm 
           .getWidth())); 
         bitmap = Bitmap 
           .createScaledBitmap(bm, 512, i, true); 
         // THIS IS THE BITMAP IMAGE WE ARE LOOKING FOR 
        } catch (Exception ex) { 
         ex.printStackTrace(); 
        } 
       } 
      }).start(); 

     } 
    } 
    cursor.close(); 
} 

/** Create a file Uri for saving an image or video */ 
private static Uri getOutputMediaFileUri(int type) { 
    return Uri.fromFile(getOutputMediaFile(type)); 
} 

/** Create a File for saving an image or video */ 
private static File getOutputMediaFile(int type) { 
    // To be safe, you should check that the SDCard is mounted 
    // using Environment.getExternalStorageState() before doing this. 

    File mediaStorageDir = new File(
      Environment 
        .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), 
      "MappyDiary"); 
    // This location works best if you want the created images to be shared 
    // between applications and persist after your app has been uninstalled. 

    // Create the storage directory if it does not exist 
    if (!mediaStorageDir.exists()) { 
     if (!mediaStorageDir.mkdirs()) { 
      Log.d("MappyDiary", "failed to create directory"); 
      return null; 
     } 
    } 

    // Create a media file name 
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss") 
      .format(new Date()); 
    File mediaFile; 
    if (type == MEDIA_TYPE_IMAGE) { 
     imageFilePath = mediaStorageDir.getPath() + File.separator + "IMG_" 
       + timeStamp + ".jpg"; 
     mediaFile = new File(imageFilePath); 
    } else if (type == MEDIA_TYPE_VIDEO) { 
     videoFilePath = mediaStorageDir.getPath() + File.separator + "VID_" 
       + timeStamp + ".mp4"; 
     mediaFile = new File(videoFilePath); 
    } else { 
     return null; 
    } 

    return mediaFile; 
} 

public static void addImageToGallery(final String filePath, 
     final Context context) { 

    ContentValues values = new ContentValues(); 

    values.put(Images.Media.DATE_TAKEN, System.currentTimeMillis()); 
    values.put(Images.Media.MIME_TYPE, "image/jpeg"); 
    values.put(MediaStore.MediaColumns.DATA, filePath); 

    context.getContentResolver().insert(Images.Media.EXTERNAL_CONTENT_URI, 
      values); 
} 

public static void addVideoToGallery(final String filePath, 
     final Context context) { 

    ContentValues values = new ContentValues(); 

    values.put(Video.Media.DATE_TAKEN, System.currentTimeMillis()); 
    values.put(Video.Media.MIME_TYPE, "video/mp4"); 
    values.put(MediaStore.MediaColumns.DATA, filePath); 

    context.getContentResolver().insert(Video.Media.EXTERNAL_CONTENT_URI, 
      values); 
} 

@Override 
public void onClick(View v) { 
    // TODO Auto-generated method stub 
    switch (v.getId()) { 
    case R.id.Button01: 
     Intent intent = new Intent(); 
     intent.setType("image/*"); 
     intent.setAction(Intent.ACTION_GET_CONTENT); 
     selectPictureIntent = Intent 
       .createChooser(intent, "Select Picture"); 
     startActivityForResult(selectPictureIntent, SELECT_PICTURE); 
     break; 

    case R.id.Button02: 
     // create Intent to take a picture and return control to the calling 
     // application 
     Intent intent2 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); 
     intent2.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); 
     // start the image capture Intent 
     startActivityForResult(intent2, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE); 
    default: 
     break; 
    } 

}