android4.4切换横屏的生命周期w

本来查了一下横屏切换时的生命周期,然后用自己手机测试了一下(nubia z5s,android4.4),发现和网上的不一样

http://blog.csdn.net/ryantang03/article/details/7749108

mainactivity代码 

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.i("ads", "onCreate");
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onRestoreInstanceState(savedInstanceState);
        Log.i("ads", "onRestoreInstanceState");
    }

    @Override
    protected void onStart() {
        // TODO Auto-generated method stub
        super.onStart();
        Log.i("ads", "onStart");
    }

    @Override
    protected void onRestart() {
        // TODO Auto-generated method stub
        super.onRestart();
        Log.i("ads", "onRestart");
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        Log.d("ads", "onConfigurationChanged");
        if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
            Log.d("ads", "当前屏幕切换成横屏显示");
        } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {
            Log.d("ads", "当前屏幕切换成竖屏显示");
        }
    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        Log.i("ads", "onResume");
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        // TODO Auto-generated method stub
        super.onSaveInstanceState(outState);
        Log.i("ads", "onSaveInstanceState");
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        Log.i("ads", "onPause");
    }

    @Override
    protected void onStop() {
        // TODO Auto-generated method stub
        super.onStop();
        Log.i("ads", "onStop");
    }

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        Log.i("ads", "onDestroy");
    }


原来的

1、不设置Activity的android:configChanges时,切屏会重新调用各个生命周期,切横屏时会执行一次,切竖屏时会执行两次

2、设置Activity的android:configChanges="orientation"时,切屏还是会重新调用各个生命周期,切横、竖屏时只会执行一次

3、设置Activity的android:configChanges="orientation|keyboardHidden"时,切屏不会重新调用各个生命周期,只会执行onConfigurationChanged方法


我测试的

1、.不设置Activity的android:configChanges时,切屏会重新调用各个生命周期,切横屏时会执行一次,切竖屏时会执行一次(不一样)

2、设置Activity的android:configChanges="orientation"时,切屏还是会重新调用各个生命周期,切横、竖屏时只会执行一次(一样)

3、设置Activity的android:configChanges="orientation|keyboardHidden"时,重新调用各个生命周期,切横、竖屏时只会执行一次(不一样)

4、设置Activity的android:configChanges="orientation|keyboardHidden|screenSize"时,切屏不会重新调用各个生命周期,只会执行onConfigurationChanged方法,(这和原文第三点一样)


我觉得是因为4.4加了个screenSize

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转载自blog.csdn.net/ccc905341846/article/details/50211139