Android实现睡眠设置

最近部门主管给了我一个小任务。将基于android2.3系统的手机上的收音机进行改装，其中有个设置睡眠时间的小功能。帖上来分享分享！先贴图。

 

 

package com.huanghua;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class SleepTime extends Activity implements OnClickListener{
    
	public static final int GIALOG_SLEEP = 1;
	public static final int COME_SLEEP = 2;
	private Button btn = null;
	private int mSleep = 0;
	
	private Handler handler = null;
	
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btn = (Button)findViewById(R.id.btn);
        btn.setOnClickListener(this);
    }

	@Override
	public void onClick(View v) {
		if(v == btn){
			showDialog(GIALOG_SLEEP);
		}
	}
	
	@Override
	protected Dialog onCreateDialog(int id) {
		Dialog dia = null;
		switch(id){
		case GIALOG_SLEEP:
			Builder b = new AlertDialog.Builder(this);
			b.setIcon(R.drawable.ic_menu_sleep);
			b.setTitle("选择睡眠时间");
			b.setSingleChoiceItems(
					R.array.sleeptime, 
					mSleep, 
					new DialogInterface.OnClickListener() {
						//在对话框中的按钮被点击时，这个方法将被调用
						@Override
						public void onClick(DialogInterface dialog, int which) {
							mSleep = which;
						}
					}).setPositiveButton("设置", new DialogInterface.OnClickListener() {
						@Override
						public void onClick(DialogInterface dialog, int which) {
							setSleepTime(mSleep);
						}
					}).setNegativeButton("取消", new DialogInterface.OnClickListener() {
						@Override
						public void onClick(DialogInterface dialog, int which) {
							removeDialog(GIALOG_SLEEP);
						}
					}).setOnCancelListener(new DialogInterface.OnCancelListener() {
						//对话框被取消时的回调方法
						@Override
						public void onCancel(DialogInterface dialog) {
							removeDialog(GIALOG_SLEEP);
						}
					});
			dia = b.create();
			break;
		case COME_SLEEP:
			dia = new AlertDialog.Builder(this)
				.setTitle("提示")
				.setMessage("睡眠时间到！是否退出？")
				.setPositiveButton("确定", new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {
						finish();
					}
				})
				.setNegativeButton("取消", new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {
						removeDialog(COME_SLEEP);
					}
				}).create();
			break;
		default:break;
		}
		return dia;
	}
	
	/**
	 * 设置睡眠时间 
	 * @param time
	 */
	private void setSleepTime(int time){
		this.mSleep = time;
		if(this.handler != null){
			//将mRunnable从消息队列中移除
			this.handler.removeCallbacks(mRunnable);
		}
		if(this.mSleep!=0){
			handler = new Handler();
			if(this.mSleep < 3){
				//在指定的时间流逝之后，将mRunnable加入消息队列
				this.handler.postDelayed(mRunnable, this.mSleep*1000 * 60 * 30);
			}else{
				this.handler.postDelayed(mRunnable, 4*1000 * 60 * 30);
			}
		}
		Log.i("myDebug","show sleep dialog mSleep ="+this.mSleep);
	}
	
	/**
	 * 睡眠时间到了时调用该线程
	 */
	private Runnable mRunnable = new Runnable(){
		@Override
		public void run() {
			//这里面的内容可以自己去实现，看需求了，可以是关机，也可以是关程序。
			showDialog(COME_SLEEP);
		}
	};
}

 

    Hello World, SleepTime!
    SleepTime
    
    	"关闭"
        "半小时后"
        "一小时后"
        "两小时后"