[主要活动启动时,它直接启动MediaStore的意图。ACTION_IMAGE_CAPTURE我实现了onActivityResult方法,但是当我拍照时,它不会返回主活动,而是保留在相机应用程序中]
这是代码:
final int REQUEST_TAKE_IMAGE = 1;
ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = findViewById(R.id.imageView);
}
@Override
protected void onStart() {
super.onStart();
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if(intent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(intent, REQUEST_TAKE_IMAGE);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == REQUEST_TAKE_IMAGE){
if(resultCode == RESULT_OK){
assert data != null;
Bundle extras = data.getExtras();
assert extras != null;
Bitmap bitmap = (Bitmap) extras.get("data");
imageView.setImageBitmap(bitmap);
}
}
}
[尝试将意图启动转移到按钮单击侦听器,我想是发生在您的活动开始时,当意图在启动时启动时,此人将带回相机应用程序,并且每次您尝试带来时活动都会使用此回调将其显示在前台,例如,选择并期望它可以带您回到活动中。