android - 从拍摄的照片中放入 ImageView 的图像并不总是显示

Question

从相机拍摄的图像并不总是显示在我的 ImageView 中。它想出现的时候似乎是随机的。为什么要这样做？

拍照的Activity

private void takePicture() {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (intent.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(intent, REQUEST_PICTURE);
    }
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    String spokenText;

    // Handles picture taking after finished
    if (requestCode == REQUEST_PICTURE && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap image = (Bitmap) extras.get("data");

        ImageView imageResult = (ImageView) findViewById(R.id.result_image);
        imageResult.setImageBitmap(image);

        ImageHandler imageHandler = new ImageHandler(this);
        imageHandler.writeToFile(image, step.getChecklistId(), step.getOrder());

        step.setImageFilename(imageHandler.getFilename(step.getChecklistId(), step.getOrder()));
        finishStep();
    }
}

显示图片的XML

<ImageView 
            android:id="@+id/result_image"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:scaleType="fitCenter"
            android:adjustViewBounds="true"
            android:contentDescription="@string/taken_img_desc" />

Answer 1

您是否为您的适配器使用了 notifyDataSetChanged？ 你的观点被刷新了吗？试试 .invalidate();