jquery实现app开发闹钟功能_简单实现Android闹钟程序 附源码

这个应用实现了简单的闹钟功能，关闭程序的状态中也可以进行闹钟的提醒。

这里遗留了一个问题：

如果我通过应用本身关闭程序，是可以实现我上述所说的功能，但是如果我在手机进程管理中实现应用程序的关闭操作，这个提醒就不起作用了，我很疑惑的是，我通过应用程序本身关闭了后，在进程中也是查看不到这个应用了的。所以哪位知道的帮留个言指点下，谢谢。

ClockDemo.java

package com.example.clock;

import java.util.Calendar;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.TimePickerDialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.View;

import android.widget.Button;

import android.widget.TimePicker;

public class ClockDemo extends Activity {

private Button mSet;

Calendar mCalendar = Calendar.getInstance();

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

ObjectPool.mAlarmHelper = new AlarmHelper(this);

mSet = (Button) findViewById(R.id.mSet);

setListener();

}

public void setListener() {

mSet.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

mCalendar.setTimeInMillis(System.currentTimeMillis());

int mHour = mCalendar.get(Calendar.HOUR_OF_DAY);

int mMinute = mCalendar.get(Calendar.MINUTE);

new TimePickerDialog(ClockDemo.this,

new TimePickerDialog.OnTimeSetListener() {

public void onTimeSet(TimePicker view,

int hourOfDay, int minute) {

mCalendar.setTimeInMillis(System

.currentTimeMillis());

mCalendar.set(Calendar.HOUR_OF_DAY, hourOfDay);

mCalendar.set(Calendar.MINUTE, minute);

mCalendar.set(Calendar.SECOND, 0);

mCalendar.set(Calendar.MILLISECOND, 0);

ObjectPool.mAlarmHelper.openAlarm(32, "ddd",

"ffff", mCalendar.getTimeInMillis());

}

}, mHour, mMinute, true).show();

}

});

}

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

if (keyCode == KeyEvent.KEYCODE_BACK) {

showBackDialog();

return true;

}

return super.onKeyDown(keyCode, event);

}

/** Give the tip when exit the application. */

public void showBackDialog() {

final AlertDialog.Builder builder = new AlertDialog.Builder(this);

builder.setTitle("提示")

.setIcon(R.drawable.icon)

.setMessage("是否退出?")

.setPositiveButton("sure",

new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,

int which) {

System.exit(0);

android.os.Process

.killProcess(android.os.Process.myPid());

dialog.dismiss();

}

})

.setNegativeButton("cancel",

new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,

int which) {

dialog.dismiss();

}

});

AlertDialog ad = builder.create();

ad.show();

}

}

AlarmHelper.java

package com.example.clock;

import android.app.AlarmManager;

import android.app.PendingIntent;

import android.content.Context;

import android.content.Intent;

public class AlarmHelper {

private Context c;

private AlarmManager mAlarmManager;

public AlarmHelper(Context c) {

this.c = c;

mAlarmManager = (AlarmManager) c

.getSystemService(Context.ALARM_SERVICE);

}

public void openAlarm(int id, String title, String content, long time) {

Intent intent = new Intent();

intent.putExtra("_id", id);

intent.putExtra("title", title);

intent.putExtra("content", content);

intent.setClass(c, CallAlarm.class);

PendingIntent pi = PendingIntent.getBroadcast(c, id, intent,

PendingIntent.FLAG_UPDATE_CURRENT);

mAlarmManager.set(AlarmManager.RTC_WAKEUP, time, pi);

}

public void closeAlarm(int id, String title, String content) {

Intent intent = new Intent();

intent.putExtra("_id", id);

intent.putExtra("title", title);

intent.putExtra("content", content);

intent.setClass(c, CallAlarm.class);

PendingIntent pi = PendingIntent.getBroadcast(c, id, intent, 0);

mAlarmManager.cancel(pi);

}

}

CallAlarm.java

package com.example.clock;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

public class CallAlarm extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

intent.setClass(context, AlarmAlert.class);

intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

context.startActivity(intent);

}

}

AlarmAlert.java

package com.example.clock;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.os.Bundle;

public class AlarmAlert extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

new AlertDialog.Builder(AlarmAlert.this)

.setIcon(R.drawable.clock)

.setTitle("ddd")

.setMessage("fff")

.setPositiveButton("ddd",

new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,

int whichButton) {

System.exit(0);

android.os.Process

.killProcess(android.os.Process.myPid());

}

}).show();

}

}

ObjectPool.java

public class ObjectPool {

/** The alarm object. */

public static AlarmHelper mAlarmHelper;

}

看了那么多，估计某些人又嫌烦了，我只贴上代码的目的是希望大家能看代码，而不是电脑上下了一个又一个的源文件，只知道用而不关心其中的技术点，这样就不能举一番三了。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。