onActivityResults from Camera 给出空意图

Question

所以直到昨天我把手机升级到 5.0.0 并在 5.0.0 模拟器中测试应用程序时，这一直很可爱。基本上目的是允许用户拍摄照片，返回照片，打开照片以允许裁剪，然后返回照片并将其设置为图像视图。

以前一切正常，但现在 onActivityResult 中的意图为空。

代码如下：

public void takeDisplayPicture(View view) {
    final String TAKE_DISPLAY_PICTURE = "Take Display Picture";
    Log.d(TAKE_DISPLAY_PICTURE, "Clicked");
    try {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(intent, CAMERA_CAPTURE);
    } catch (ActivityNotFoundException e) {
        String msg = "Your device doesn't support a camera!";
        Toast toast = Toast.makeText(this, msg, Toast.LENGTH_SHORT);
        toast.show();
    }
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    final String RETURN_DISPLAY_PICTURE = "Return Display Picture";
    Log.d(RETURN_DISPLAY_PICTURE, "Returned");
    if (resultCode == RESULT_OK && requestCode == CAMERA_CAPTURE) {
        picUri = data.getData();
        performCrop(picUri);
    } else if (requestCode == PIC_CROP) {
        Bundle extras = data.getExtras();
        bitmap = extras.getParcelable("data");
        displayPicture.setImageBitmap(bitmap);
    }
}
private void performCrop(Uri picUri) {
    try {
        Intent cropIntent = new Intent("com.android.camera.action.CROP");
        cropIntent.setDataAndType(picUri, "image/*");
        cropIntent.putExtra("crop", "true");
        cropIntent.putExtra("aspectX", 1);
        cropIntent.putExtra("aspectY", 1);
        cropIntent.putExtra("outputX", 256);
        cropIntent.putExtra("outputY", 256);
        cropIntent.putExtra("return-data", true);
        startActivityForResult(cropIntent, PIC_CROP);
    } catch (ActivityNotFoundException e) {
        String msg = "Your device doesn't support the crop action!";
        Toast toast = Toast.makeText(this, msg, Toast.LENGTH_SHORT);
        toast.show();
    }
}

Answer 1

首先，Android 没有CROP Intent。

关于null Uri，应该是null。引用ACTION_IMAGE_CAPTURE文档：

调用方可能会传递额外的EXTRA_OUTPUT来控制此映像的写入位置。如果EXTRA_OUTPUT不存在，则在额外字段中将小尺寸图像作为位图对象返回。

你没有EXTRA_OUTPUT，所以你应该通过记录不佳的(Bitmap)data.getExtras().get("data");来获取你的图像。