Activity的使用(六):设置activity屏幕的方向

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用setRequestedOrientation

package com.example.androidtest;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.content.pm.ActivityInfo;import android.content.res.Configuration;import android.widget.CompoundButton;import android.widget.ToggleButton;import android.widget.CompoundButton.OnCheckedChangeListener;public class AndroidTest extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_android_test);ToggleButton toggle = (ToggleButton)findViewById(R.id.toggleButton);if (getRequestedOrientation() != ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED) {toggle.setChecked(true);} else {toggle.setChecked(false);}toggle.setOnCheckedChangeListener(listener);}OnCheckedChangeListener listener = new OnCheckedChangeListener(){public void onCheckedChanged(CompoundButton buttonView, boolean isChecked){int current = getResources().getConfiguration().orientation;if (isChecked) {switch(current) {case Configuration.ORIENTATION_LANDSCAPE:setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);break;case Configuration.ORIENTATION_PORTRAIT:setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);break;default:setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);}} else {setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);}}};@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.android_test, menu);return true;}}

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