3

我正在这样做：

intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
final File storage = Environment.getExternalStorageDirectory();
final Uri uri = Uri.fromFile(new File(storage, System.currentTimeMillis() + ".jpg"));
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(intent, id);

并处理得到那张照片，我这样做：

private String getLastImagePath() {
    final String[] imageColumns = { MediaStore.Images.Media._ID,
            MediaStore.Images.Media.DATA };
    final String imageOrderBy = MediaStore.Images.Media._ID + " DESC";
    final Cursor imageCursor = getContentResolver().query(
            MediaStore.Images.Media.EXTERNAL_CONTENT_URI, imageColumns,
            null, null, imageOrderBy);
    if (imageCursor.moveToFirst()) {
        final String fullPath = imageCursor.getString(imageCursor
                .getColumnIndex(MediaStore.Images.Media.DATA));
        return fullPath;
    } else {
        throw new RuntimeException();
    }
}

但是，我不断收到这样的消息：

07-02 14:46:54.751: E/BitmapFactory(23119): Unable to decode stream: java.io.FileNotFoundException: /storage/emulated/0/DCIM/Camera/IMG_20130702_144653.jpg: open failed: ENOENT (No such file or directory)

如果我检查图库，照片不在那里，所以我的猜测是 Intent 忽略了该MediaStore.EXTRA_OUTPUT值。

有什么我可以做的不涉及编写我自己的相机解决方案吗？

4

2 回答 2

3

像这样使用：

意图： 

             Intent takePicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(takePicture, 0);

要获取该结果：

 protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
       super.onActivityResult(requestCode, resultCode, imageReturnedIntent);

       switch(requestCode) {
       case 0:
           if(resultCode == RESULT_OK){
           Uri selectedImage = imageReturnedIntent.getData();
                String[] filePathColumn = {MediaStore.Images.Media.DATA};

                   Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
                   cursor.moveToFirst();

                   int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                  //file path of captured image
                   filePath = cursor.getString(columnIndex); 
                   //file path of captured image
                   File f = new File(filePath);
                   filename= f.getName();

                   Toast.makeText(SiteViewFieldCreate.this, "Your Path:"+filePath, 2000).show();
                   Toast.makeText(SiteViewFieldCreate.this, "Your Filename:"+filename, 2000).show();
                   cursor.close();

                 //Convert file path into bitmap image using below line.
                  // yourSelectedImage = BitmapFactory.decodeFile(filePath);


                  //put bitmapimage in your imageview
                  //yourimgView.setImageBitmap(yourSelectedImage);
      }
       break;
     }
    }

将此添加到您的manifest.xml中。

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />


<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />

希望这会给你一些解决方案。

于 2013-07-02T12:59:58.513 回答
1

Nirmals 解决方案适用于除 Android 4.x (Apilevel 15) 之外的所有设备。似乎是一个错误，但imageReturnedIntent.getData()总是返回 null！（模拟器和设备上的testet）拍摄的照片甚至没有保存在externaldir上，所以任何尝试获取最新id或最好date_added的ContentResolver都将失败（返回卡中的最新照片，但不返回拍摄的照片）！目前我没有解决这个问题......似乎不可能在 Apilevel 15 上获得拍摄照片的路径（虽然仍然可以获取可绘制并自己保存）......

于 2014-01-07T08:28:54.390 回答