Java 如何在onActivityResult（）中获取位图图像{}

我试着开发一个android应用程序，从摄像头捕获图像，然后在ImageView上显示，但每次应用程序捕获图像后，它都会崩溃。谢谢

这是我的Java代码

 public class MainActivity extends ActionBarActivity {
 private ImageView mImageView;
    static final int REQUEST_IMAGE_CAPTURE = 1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mImageView=(ImageView)findViewById(R.id.image);

      }
    public void klik(View view){
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
            startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
        }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
            Bundle extras = data.getExtras();
            Bitmap imageBitmap = (Bitmap) extras.get("data");
            mImageView.setImageBitmap(imageBitmap);
        }
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

我是这样做的：

创建一个临时文件来存储映像，并将路径存储在成员变量中

填写相机意图的

EXTRA_输出

参数

OnActivityResult

从以前存储的路径读取文件

对于代码，它类似于：

// 1.
File tempFile = File.createTempFile("camera", ".png", getExternalCacheDir());
mPath = tempFile.getAbsolutePath();
Uri uri = Uri.fromFile(tempFile);

// 2.
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);

// 3.
protected void onActivityResult(int requestCode, int resultCode, Intent data){
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inPreferredConfig = Bitmap.Config.ARGB_8888;
    Bitmap bitmap = BitmapFactory.decodeFile(mPath, options);

    mImageView.setImageBitmap(bitmap);
}