有的场景下，我们须要把手机屏幕方向改变，以下是我写的一个样例。
xml页面文件：
<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/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="改动屏幕方向"
/>
</RelativeLayout>
页面java文件：
package com.example.chcfg;
import android.os.Bundle;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity
extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = (Button)findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener()
{
public
void onClick(View source) {
//
TODO Auto-generated method stub
Configuration config = getResources().getConfiguration();
if(config.orientation == Configuration.ORIENTATION_LANDSCAPE)
{
//设置为竖屏
MainActivity.this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
//假设当前是竖屏
if(config.orientation == Configuration.ORIENTATION_PORTRAIT)
{
MainActivity.this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
}
});
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
//
TODO Auto-generated method stub
super.onConfigurationChanged(newConfig);
String screen = newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE ?
"横向屏幕" : "纵向屏幕";
Toast.makeText(this,
"系统屏幕方向发生改变\n改动后的方向为：" + screen , Toast.LENGTH_LONG).show();
}
}
MainFest xml文件：
<?xml
version="1.0"
encoding="utf-8"?
>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.chcfg"
android:versionCode="1"
android:versionName="1.0"
>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18"
/>
<uses-permission
android:name="android.permission.CHANGE_CONFIGURATION"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
>
<activity
android:name="com.example.chcfg.MainActivity"
android:label="@string/app_name"
android:configChanges="orientation">
<intent-filter>
<action
android:name="android.intent.action.MAIN"
/>
<category
android:name="android.intent.category.LAUNCHER"
/>
</intent-filter>
</activity>
</application>
</manifest>
个人辛勤劳动成果，如有转载。请注明出处。谢谢。