java - Intent 为空

Question

我从 Android 开发者页面复制了代码。我在这里读了很多关于 onActivityResult 未触发的帖子。这些场景都不适合我。

 @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_TAKE_PHOTO && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap imageBitmap = (Bitmap) extras.get("data");
        mImageView = (ImageView)findViewById(R.id.imageView);
        mImageView.setImageBitmap(imageBitmap);
    }
}
static final int REQUEST_TAKE_PHOTO = 1;

private void dispatchTakePictureIntent() {
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        File photoFile = null;
        try {
            photoFile = createImageFile();
        } catch (IOException ex) {
        }
        if (photoFile != null) {
            Uri photoURI = Uri.fromFile(photoFile);
            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
            startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
        }
    }

Answer 1

当我写这个时；

takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);

onActivityResult() 的 Intent 返回 null。所以，实际上并不是 onActivityResult() 没有被调用。是关于onActivityResult中传入的intent返回null。

所以，我刚刚删除了 putExtra() 方法，现在工作正常了。