效果图

方案一竖屏.png

方案一横屏.png

方案二竖屏.png

方案二横屏.png

方案一：不重走生命周期

Activity代码

public class ScreenChangeActivity extends FragmentActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_screen_change_portrait);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {//当切换为横屏时，显示横屏的布局
            setContentView(R.layout.activity_screen_change_landscape);
        } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {//当切换为竖屏时，显示竖屏的布局（默认竖屏的布局）
            setContentView(R.layout.activity_screen_change_portrait);
        }
    }

}

竖屏布局代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FBBC05"
    android:gravity="center"
    android:orientation="vertical">

    <TextView
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:background="#EA4335"
        android:gravity="center"
        android:text="我是竖屏的布局"
        android:textColor="#FFFFFF"
        android:textSize="18sp"
        android:textStyle="bold" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:gravity="center"
        android:text="我不重走生命周期"
        android:textColor="#FFFFFF"
        android:textSize="13sp"
        android:textStyle="bold" />

</LinearLayout>

横屏布局代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#4285F4"
    android:gravity="center"
    android:orientation="vertical">

    <TextView
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:background="#34A853"
        android:gravity="center"
        android:text="我是横屏的布局"
        android:textColor="#FFFFFF"
        android:textSize="18sp"
        android:textStyle="bold" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:gravity="center"
        android:text="我不重走生命周期"
        android:textColor="#FFFFFF"
        android:textSize="13sp"
        android:textStyle="bold" />

</LinearLayout>

AndroidManifest.xml配置代码

<activity
            android:name=".screen.ScreenChangeActivity"
            android:configChanges="keyboardHidden|orientation|screenSize" />

方案二：重走生命周期

Activity代码

public class ScreenChange2Activity extends FragmentActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_screen_change2);
    }

}

layout布局

image.png

竖屏布局代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FBBC05"
    android:gravity="center"
    android:orientation="vertical">

    <TextView
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:background="#EA4335"
        android:gravity="center"
        android:text="我是竖屏的布局"
        android:textColor="#FFFFFF"
        android:textSize="18sp"
        android:textStyle="bold" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:gravity="center"
        android:text="我重走生命周期"
        android:textColor="#FFFFFF"
        android:textSize="13sp"
        android:textStyle="bold" />

</LinearLayout>

横屏布局代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#4285F4"
    android:gravity="center"
    android:orientation="vertical">

    <TextView
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:background="#34A853"
        android:gravity="center"
        android:text="我是横屏的布局"
        android:textColor="#FFFFFF"
        android:textSize="18sp"
        android:textStyle="bold" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:gravity="center"
        android:text="我重走生命周期"
        android:textColor="#FFFFFF"
        android:textSize="13sp"
        android:textStyle="bold" />

</LinearLayout>

AndroidManifest.xml配置代码

<activity
            android:name=".screen.ScreenChange2Activity"/>