Android实现动态切换横竖屏，保存横竖屏数据（用Preference存储）



	 

	Look My Code:

	 

	 

	package com.test; 

	 

	import android.app.Activity; 

	import android.content.pm.ActivityInfo; 

	import android.os.Bundle; 

	import android.view.View; 

	import android.view.View.OnLongClickListener; 

	import android.view.Window; 

	import android.view.WindowManager; 

	import android.widget.TextView; 

	import android.widget.Toast; 

	 

	/**

	 * class name：TestAndroid_BasicActivity<BR>

	 * class description：动态设置横竖屏哦<BR>

	 * PS：既然要实现横竖屏的变更，所以设置的记录就必须持久化存储 你可以用数据库，这里用的是简单一点的Preference <BR>

	 * 

	 * @version 1.00 2011/09/21

	 * @author CODYY)peijiangping

	 */ 

	public class TestAndroid_BasicActivity extends Activity implements 

	        OnLongClickListener { 

	    // 设置默认为横屏SCREEN_ORIENTATION_LANDSCAPE,竖屏SCREEN_ORIENTATION_PORTRAIT 

	    private int ORIENTATION = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE; 

	    private TextView textview; 

	    private MyPreference mpf; 

	 

	    @Override 

	    public void onCreate(Bundle savedInstanceState) { 

	        super.onCreate(savedInstanceState); 

	        mpf = new MyPreference(this, "love"); 

	        try { 

	            ORIENTATION = mpf.read("model"); 

	        } catch (Exception e) { 

	            System.out.println("first"); 

	        } 

	        requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏 

	        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 

	                WindowManager.LayoutParams.FLAG_FULLSCREEN);// 设置全屏 

	        // 设置横竖屏 

	        setRequestedOrientation(ORIENTATION); 

	        setContentView(R.layout.main); 

	        init(); 

	    } 

	 

	    private void init() { 

	        textview = (TextView) this.findViewById(R.id.textview); 

	        textview.setText("Loveing"); 

	        textview.setOnLongClickListener(this);// 实现长按事件监听 

	    } 

	 

	    @Override 

	    public boolean onLongClick(View v) { 

	        // 如果当前为横屏 

	        if (ORIENTATION == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) { 

	            // 将竖屏保存进MyPreference 

	            mpf.write("model", ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); 

	            // 显示一个toast提示 

	            Toast toast = Toast.makeText(this, "横屏已经切换成竖屏，请重新进入应用查看", 

	                    Toast.LENGTH_SHORT); 

	            toast.show(); 

	            // 如果当前为竖屏 

	        } else if (ORIENTATION == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) { 

	            // 将横屏保存进MyPreference 

	            mpf.write("model", ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); 

	            // 显示一个toast提示 

	            Toast toast = Toast.makeText(this, "竖屏已经切换成横屏，请重新进入应用查看", 

	                    Toast.LENGTH_SHORT); 

	            toast.show(); 

	        } 

	        return false; 

	    } 

	} 

	 

	 

	package com.test; 

	 

	import android.content.Context; 

	import android.content.SharedPreferences; 

	import android.content.pm.ActivityInfo; 

	 

	public class MyPreference { 

	    private SharedPreferences preference; 

	    private String file_name; 

	    private int value_int; 

	    //设置默认为横屏 

	    private int defultint = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;; 

	 

	    public MyPreference(Context context, String str) { 

	        file_name = str; 

	        value_int = 0; 

	        preference = context.getSharedPreferences(file_name, 0); 

	    } 

	 

	    public int read(String name) { 

	        value_int = preference.getInt(name, defultint); 

	        return value_int; 

	    } 

	 

	    public void write(String name, int value) { 

	        SharedPreferences.Editor editor = preference.edit(); 

	        editor.putInt(name, value); 

	        editor.commit(); 

	    } 

	} 

	摘自 裴裴的Android学习和分享

补充：移动开发 , Android ,