Question

我这样做：

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);

并处理获取该照片，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();
    }
}

然而，我继续收到这样的消息：

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)

如果我查看图库，则照片不存在，所以我的猜测是Intent忽略了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？

Answer 1

使用像这样：

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;
     }
    }

在 manifest.xml 中添加此内容。

<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。

Answer 2

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bug，但imageReturnedIntent.getData()总是返回null！（在模拟器和设备上测试）拍摄的照片甚至没有保存在externaldir上，因此任何从id获取最新date_added或最大ContentResolver的尝试都将失败（从卡中返回最新照片，但不会拍摄照片）！目前我没有解决这个问题的方法......似乎无法获得Apilevel 15拍摄照片的路径（虽然它仍然可以获得可绘制并由您自己保存）。

告诉相机意图保存拍摄的图像

2 个答案: