Is any alternate of Intent.FLAG_ACTIVITY_REORDER_TO_FRONT

问题

I am creating Two activities as below now when click on button from MainActivity it shows SecondActivity and on click button from SecondActivity shows MainActivity normally but now on click soft back button Device show ANR.

MainActivity buttonClick -> SecondActivity buttonClick -> Soft back click , results ANR.

Is there any workaround?

This issue with Android 4.4.4. I know about this https://code.google.com/p/android/issues/detail?id=63570#c2 issue.

Thanks for any help.

  public class MainActivity extends Activity {
        TextView tv;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            tv = (TextView) findViewById(R.id.textView1);
            tv.setText("Main Activity");
        }

        public void onClickBtn(View view)
        {
            Intent intent = new Intent(this, SecondActivity.class);
            startActivity(intent);
        }

        public void finish(){
            Log.v("MainActivity", "Finish of main activity called");
            super.finish();
        }
    }


    public class SecondActivity extends Activity {
        TextView tv;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            tv = (TextView) findViewById(R.id.textView1);
            tv.setText("Second Activity");
        }

        public void onClickBtn(View view) {
            Intent intent = new Intent(this, MainActivity.class);
            intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
            startActivity(intent);
        }

        public void finish(){
            Log.v("SecondActivity", "Finish of second activity called");
            super.finish();
        }
    }

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >


    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="42dp"
        android:onClick="onClickBtn"
        android:text="Button" />


    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/button1"
        android:text="@string/hello_world" />

</RelativeLayout>

回答1:

use intent.setFlags (Intent.FLAG_ACTIVITY_REORDER_TO_FRONT | Intent.FLAG_ACTIVITY_CLEAR_TOP); the application will not crash.

来源：https://stackoverflow.com/questions/25306473/is-any-alternate-of-intent-flag-activity-reorder-to-front