相机图像在ImageView中未显示

Question

private static final int REQUEST_CODE = 1;
private ImageView addPicture;
private Bitmap bitmap;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(//setting the view);

    addPicture.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Intent imageIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            File imagesFolder = new File(Environment.getExternalStorageDirectory(), "MyImages");
            imagesFolder.mkdirs(); // <----
            File image = new File(imagesFolder, "image_001.jpg");
            Uri uriSavedImage = Uri.fromFile(image);
            imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
            startActivityForResult(imageIntent, 0);
        }
    });

}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    addPicture = (ImageView) findViewById(R.id.profilepicture_registerone);

    if (requestCode == REQUEST_CODE) {
        if (resultCode == RESULT_OK) {
            try {
                InputStream stream = getContentResolver().openInputStream(data.getData());
                bitmap = BitmapFactory.decodeStream(stream);
                addPicture.setImageBitmap(bitmap);
                stream.close();


            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {

            }

            RoundImage image = new RoundImage(bitmap);

        } else if (resultCode == RESULT_CANCELED) {
            // User cancelled the image capture
        } else {
            Toast.makeText(getApplicationContext(), "Bad Image Request. Please Try Again!", Toast.LENGTH_LONG).show();
        }
    }

}

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

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

<ImageView
    android:layout_width="200dp"
    android:layout_height="200dp"
    android:id="@+id/profilepicture_registerone"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="50dp"
    android:clickable="true"
    android:onClick="addPicture" />

Answer 1

您需要在oncreate()中找到带有正确ID标记的ImageView ID。

 addPicture = (ImageView) findViewById(R.id.profilepicture_registerone);

和

请检查您的位图，是否为空？