Android在activity recreate()上进行转换

Question

我想在更改主题后转换activity recreate()，可以吗？

我尝试过：@android:anim/fade_in @android:anim/fade_out，但它不起作用，这也会影响我打开和关闭activity时的过渡，但我不想这样

Answer 1

要使用@Arunava的答案“保存状态”，请执行以下操作

    Activity mCurrentActivity = getActivity();
    Intent intent = getActivity().getIntent();
    Bundle tempBundle = new Bundle();
    intent.putExtra("bundle", tempBundle);

    mCurrentActivity.finish();
    mCurrentActivity.overridePendingTransition(R.anim.transition_for_incoming_activity, R.anim.transition_for_outgoing_activity);
    mCurrentActivity.startActivity(intent);

然后在您的活动的onCreate中执行此操作

    @Override
    protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
    if (getIntent().hasExtra("bundle")){
        //Insert a method to display the activity or fragment that triggered the activity to restart
    }
    super.onResume();
}

Answer 2

完成@Yaro的回答，

在onCreate中，如果savedInstanceState为null，请尝试使用intent附加参数。只有在使用捆绑包调用super.onCreate时，视图的状态才能正确恢复。

public class ExampleActivity extends Activity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        //setTheme(whatever);
        super.onCreate(savedInstanceState != null ? savedInstanceState : getIntent().getBundleExtra("saved_state"));
    }

    protected void transitionRecreate(){
        Bundle bundle = new Bundle();
        onSaveInstanceState(bundle);
        Intent intent = new Intent(this, getClass());
        intent.putExtra("saved_state", bundle);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        startActivity(intent);
        overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
    }

}

对于我来说，您可以使用finish()而不是CLEAR_TOP标志

Answer 3

您可以使用它而不是recreate()

Activity mCurrentActivity = getActivity();
...
mCurrentActivity.finish();
mCurrentActivity.overridePendingTransition(R.anim.transition_for_incoming_activity, R.anim.transition_for_outgoing_activity);
mCurrentActivity.startActivity(mCurrentActivity.getIntent());