AlarmManager 实现闹钟的基本功能

先上效果图

这是一个利用AlarmManager做的最简单的闹钟！迟点再把重复响铃（例如星期一，星期三，重复响铃）

1.MainActivity

package com.example.domereflect;

import java.util.Calendar;

import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {

    private Button add_alarm; //添加闹钟按钮

    private int sqlHour;//记录时间，小时
    private int sqlMinute;//记录时间，分钟
    private Calendar c; //时间

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        createView();
    }

    private void createView(){
        add_alarm = (Button)findViewById(R.id.add_alarm_btn);
        add_alarm.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        switch (v.getId()) {
        case R.id.add_alarm_btn:
            int i = ;    //PendingIntent.getBroadcast的第二个，四个参数。
            AddAlarm.getAlarmDialog(this); //添加闹钟的dialog（主要实现保存时间的功能）
            sqlHour = MyApplication.getInstance().getAlarmHour(); //获取时间，小时
            sqlMinute = MyApplication.getInstance().getAlarmMin();//获取时间，分钟
            Toast.makeText(this, sqlHour+":"+sqlMinute, ).show();
            openAlarm(i++);//发出广播，在指定时间响铃。
            break;

        default:
            break;
        }
    }

    private void openAlarm(int id){
        //获得AlarmManager类
        AlarmManager manager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);

        //跳转，发送广播
        Intent intent = new Intent(this, CallAlarm.class);
        PendingIntent sender = PendingIntent.getBroadcast(this, id, intent, id);

        //时间的处理
        c = Calendar.getInstance();
        c.setTimeInMillis(System.currentTimeMillis());
        c.set(Calendar.HOUR_OF_DAY, sqlHour);
        c.set(Calendar.MINUTE, sqlMinute);
        c.set(Calendar.SECOND, );
        c.set(Calendar.MILLISECOND, );

        //添加闹钟
        manager.set(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), sender);

    }

}

2.AddAlarm类

package com.example.domereflect;

import android.app.Dialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.WebView.FindListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;

public class AddAlarm {

    public AddAlarm(){

    }

    public static Dialog getAlarmDialog(Context context){

        final Dialog dialog = new Dialog(context);
        LayoutInflater inflater = LayoutInflater.from(context);
        View view = inflater.inflate(R.layout.alarmdialog_layout, null);
        dialog.setContentView(view);
        final TimePicker picker = (TimePicker)view.findViewById(R.id.pic_time);
        Button save = (Button)view.findViewById(R.id.save_time);

        save.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                int hour= picker.getCurrentHour();
                int min = picker.getCurrentMinute();
                MyApplication.getInstance().setAlarmHour(hour);
                MyApplication.getInstance().setAlarmMin(min);
                dialog.dismiss();
            }
        });
        dialog.show();
        return dialog;
    }
}

3.还有其他几个类

package com.example.domereflect;

import android.app.Activity;
import android.os.Bundle;

public class AlarmAlertDialog extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}

package com.example.domereflect;

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) {
        // TODO Auto-generated method stub
        intent.setClass(context, AlarmAlertDialog.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent);
    }

}

package com.example.domereflect;

import android.app.Application;
import android.content.Context;
import android.content.SharedPreferences;

public class MyApplication extends Application {
    private static MyApplication instance;
    private static SharedPreferences settings;

    @Override
    public void onCreate() {
        // TODO Auto-generated method stub
        super.onCreate();
        settings = getSharedPreferences("AlarmShare", Context.MODE_PRIVATE);
    }
    public static MyApplication getInstance(){
        if(null == instance){
            instance = new MyApplication();
        }
        return instance;
    }

    public void setAlarmHour(int hour){
        settings.edit().putInt("Hour", hour).commit();
    }
    public int getAlarmHour(){
        return     settings.getInt("Hour", );
    }
    public void setAlarmMin(int min){
        settings.edit().putInt("Min", min).commit();
    }
    public int getAlarmMin(){
        return     settings.getInt("Min", );
    }

}