意图是空的

Question

我从 android 开发者页面复制了代码。我在这里阅读了很多关于 onActivityResult 未触发的帖子。 None 个场景对我有用。

 @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

一旦获得一些信息，请检查此 link :

http://www.androidhive.info/2014/12/android-uploading-camera-image-video-to-server-with-progress-bar/

https://androidmyway.wordpress.com/2012/02/05/selecting-image-from-gallery-or-taking-image-from-camera-with-options-menu-uploading-to-server/

Answer 2

当我写这篇文章时；

takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);

onActivityResult() 的意图 returns 无效。所以，实际上这与未调用 onActivityResult() 无关。它是关于在 onActivityResult 中传递的意图 returns null.

所以，我刚刚删除了 putExtra() 方法，现在它工作正常。

意图是空的

Intent is empty

java

camera

android

android-studio

onactivityresult