我想拍摄一张照片并将其保存到画廊。然后从图库中读取这张照片,并将其转换为文本(使用ocr)
但是当我尝试使用此行代码保存应用时,我的应用始终崩溃
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri);
我调试了我的应用程序,发现此行是导致崩溃的原因。但是没有这一行,我将无法保存图像。我该怎么办?
package com.example.takepicture;
import ...
public class MainActivity extends AppCompatActivity {
private static final int CAMERA_REQUEST = 1888;
ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btnCamera = (Button) findViewById(R.id.btnCamera);
imageView = (ImageView) findViewById(R.id.ImageView);
btnCamera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File pictureDirectory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
String pictureName = getPictureName();
File imageFile = new File(pictureDirectory,pictureName);
Uri pictureUri = Uri.fromFile(imageFile);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
//capturarFoto();
}
});
}
private String getPictureName() {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
return "Img" + timeStamp + ".jpg";
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_OK) {
if (requestCode == CAMERA_REQUEST) {
}
}
}
}
答案 0 :(得分:0)
最快的解决方案是添加:
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
致电之前的某个地方:
startActivityForResult(...)
但是正确的(对于API> 24)是:
通过FileProvider.getUriForFile(...)
和
创建提供程序(并将其添加到清单文件中)
您可以在此处找到更多信息:https://stackoverflow.com/a/50265329/5529263