无法将意图用于CAMERA

Question

在我的应用程序中，单击“图像视图”后，我要启动Camera，它将捕获图像并将其显示在另一个图像视图中。
我的代码如下：

 //On clicking Camera
    iv_camera.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(cameraIntent, CAMERA_REQUEST);
        }
    });

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
        if (data != null) {
            Log.e("Result Code", String.valueOf(resultCode));
            Bitmap photo = (Bitmap) data.getExtras().get("data");
            Uri selectedImageUri = data.getData();
            Log.e("ImageUri", String.valueOf(selectedImageUri));
            String realPath = getRealPathFromURI(selectedImageUri);
             Log.e("Real Path", realPath);
            imgProfilePic.setImageBitmap(photo);
        }
    }
}

//Get real path form Uri
public String getRealPathFromURI(Uri contentUri) {
    try {
        String[] proj = {MediaStore.Images.Media.DATA};
        Cursor cursor = managedQuery(contentUri, proj, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    } catch (Exception e) {
        return contentUri.getPath();
    }
}

我的问题是，在某些手机上它可以正常工作，但在某些手机上却不能。
例如：如果我正在使用带有棒棒糖的手机Yu Yureka来测试我的应用程序，它将给我的数据为null。此外，当方向更改时，应用程序崩溃了。请帮助我解决此问题。

Answer 1

在清单文件中使用这些权限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

从这个简单的代码示例中实现，这是我的工作示例代码

public void CameraClick(View v) {

        Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

        // creating Dir to save clicked Photo
        String root = Environment.getExternalStorageDirectory().toString();
        File myDir = new File(root + "/cam_Intent");
        myDir.mkdirs();

        // save clicked pic to given dir with given name

        File file = new File(Environment.getExternalStorageDirectory(),
                "/cam_Intent/MyPhoto.jpg");

        outPutfileUri = Uri.fromFile(file);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, outPutfileUri);
        startActivityForResult(intent, TAKE_PIC);
    }

    Bitmap bitmap = null;

    @Override
    protected void onActivityResult(int requestCode, int resultCode,Intent data)
    {
        if (requestCode == TAKE_PIC && resultCode==RESULT_OK) {

            String uri = outPutfileUri.toString();
            Log.e("uri-:", uri);
            Toast.makeText(this, outPutfileUri.toString(),Toast.LENGTH_LONG).show();

            //Bitmap myBitmap = BitmapFactory.decodeFile(uri);
           // mImageView.setImageURI(Uri.parse(uri));   OR drawable make image strechable so try bleow also

            try {
                bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), outPutfileUri);
                Drawable d = new BitmapDrawable(getResources(), bitmap);
                mImageView.setImageDrawable(d);
            } catch (IOException e) {
                e.printStackTrace();
            }


        }
}