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Android睡眠设置的小功能。帖上来分享分享！先贴图。
Activity代码：
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);
}
};
}
Strings.xml代码：
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, SleepTime!</string>
<string name="app_name">SleepTime</string>
<string-array name="sleeptime">
<item>
<string name="off">"关闭"</string>
</item>
<item>
<string name="halfhourlater">"半小时后"</string>
</item>
<item>
<string name="anhourlater">"一小时后"</string>
</item>
<item>
<string name="twohourlater">"两小时后"</string>
</item>
</string-array>
</resources>
