android闹钟（五）：实现闹钟功能

 

 

闹钟主页面：AlarmView.java

package com.mytest.myclock;



import java.util.Calendar;



import android.app.AlarmManager;

import android.app.AlertDialog;

import android.app.PendingIntent;

import android.app.TimePickerDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

import android.util.AttributeSet;

import android.view.View;

import android.widget.Adapter;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.LinearLayout;

import android.widget.ListView;

import android.widget.ShareActionProvider;

import android.widget.TimePicker;

import android.widget.Toast;



public class AlarmView extends LinearLayout {



    public AlarmView(Context context, AttributeSet attrs, int defStyle) {

        super(context, attrs, defStyle);

        // TODO Auto-generated constructor stub

    }



    public AlarmView(Context context, AttributeSet attrs) {

        super(context, attrs);

        // TODO Auto-generated constructor stub

    }



    public AlarmView(Context context) {

        super(context);

        // TODO Auto-generated constructor stub

    }



    private ListView alarmListView;

    private Button addAlarmButton;

    private ArrayAdapter<Alarm> adapter;

    private final static String KEY_ALARM_LIST = "clarm_list";

    private AlarmManager alarmManager;



    @Override

    protected void onFinishInflate() {

        super.onFinishInflate();



        alarmListView = (ListView) this.findViewById(R.id.lv_alarm);

        addAlarmButton = (Button) this.findViewById(R.id.btn_add_alarm);



        addAlarmButton.setOnClickListener(new AddAlarmOnClickListener());



        adapter = new ArrayAdapter<AlarmView.Alarm>(getContext(), android.R.layout.simple_list_item_1);

        alarmListView.setAdapter(adapter);

        alarmListView.setOnItemLongClickListener(new ClarmOnItemLongClickListener());



        readSaveCalarm();



        alarmManager = (AlarmManager) getContext().getSystemService(Context.ALARM_SERVICE);

    }



    private final class ClarmOnItemLongClickListener implements AdapterView.OnItemLongClickListener {



        @Override

        public boolean onItemLongClick(AdapterView<?> parent, View view, final int position, long id) {

            

            //System.out.println("onItemLongClick=================>");

            

            new AlertDialog.Builder(getContext()).setTitle("确认删除？").setNegativeButton("取消", null)

                    .setPositiveButton("确定", new DialogInterface.OnClickListener() {



                        @Override

                        public void onClick(DialogInterface dialog, int which) {

                            System.out.println("onItemLongClick->onClick:which:" + which);

                        

                            removeAlarm(position);

                        

                        }



                    }).show();



            return true;

        }



    }



    private final class AddAlarmOnClickListener implements View.OnClickListener {



        @Override

        public void onClick(View v) {

            // Toast.makeText(getContext(), "add",Toast.LENGTH_SHORT).show();

            addAlarm();

        }

    }



    private void removeAlarm(int index) {

        Alarm alarm = adapter.getItem(index);

        adapter.remove(alarm);

        saveAlarm();

        alarmManager.cancel(PendingIntent.getBroadcast(getContext(), alarm.getId(), new Intent(getContext(),AlarmReceiver.class), 0));

    }



    /**

     * 保存设置的闹钟。覆盖式的，全部重新写入，清空原有的。

     */

    private void saveAlarm() {

        Editor edit = getContext().getSharedPreferences(AlarmView.class.getName(), Context.MODE_PRIVATE).edit();

        StringBuffer alarmListStr = new StringBuffer();



        for (int i = 0; i < adapter.getCount(); i++) {

            alarmListStr.append(adapter.getItem(i).getTime()).append(",");

        }



        edit.putString(KEY_ALARM_LIST, alarmListStr.toString());

        edit.commit();

    }



    /**

     * 读取保存的闹钟

     */

    private void readSaveCalarm() {

        SharedPreferences share = getContext().getSharedPreferences(AlarmView.class.getName(), Context.MODE_PRIVATE);

        String alarmListStr = share.getString(KEY_ALARM_LIST, "");

        if (alarmListStr != null) {

            String[] alarmArr = alarmListStr.split(",");

            if (alarmArr != null) {

                for (String str : alarmArr) {

                    System.out.println("alarm:" + str);

                    if (str != null && !"".equals(str.trim())) {

                        long time = Long.valueOf(str);

                        adapter.add(new Alarm(time));

                    }

                }

            }

        }



    }



    /**

     * 添加闹钟

     */

    private void addAlarm() {

        Calendar curCal = Calendar.getInstance();



        new TimePickerDialog(getContext(), new TimePickerDialog.OnTimeSetListener() {



            @Override

            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {

                Calendar alarmCal = Calendar.getInstance();

                alarmCal.set(Calendar.HOUR_OF_DAY, hourOfDay);

                alarmCal.set(Calendar.MINUTE, minute);

                alarmCal.set(Calendar.SECOND, 0);



                // 如果设置时间小于当前时间，则往后推一天。

                Calendar currentTime = Calendar.getInstance();

                if (alarmCal.getTimeInMillis() <= currentTime.getTimeInMillis()) {

                    alarmCal.setTimeInMillis(alarmCal.getTimeInMillis() + 24 * 60 * 60 * 1000);

                }



                // System.out.println(String.format("hourOfDay:%d,minute:%d",

                // hourOfDay,minute));



                // 添加到adapter，显示到列表

                Alarm alarm = new Alarm(alarmCal.getTimeInMillis());

                adapter.add(alarm);



                //每隔10分钟

                alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, alarm.getTime(), 10 * 60 * 1000, PendingIntent

                        .getBroadcast(getContext(), alarm.getId(), new Intent(getContext(), AlarmReceiver.class), 0));



                // 保存到share中，下次启动再读取

                saveAlarm();

            }

        }, curCal.get(Calendar.HOUR_OF_DAY), curCal.get(Calendar.MINUTE), true).show();

    }



    private class Alarm {

        private long time = 0;

        private String timeLabel = "";

        private Calendar date;



        public Alarm(Long time) {

            this.time = time;

            Calendar cal = Calendar.getInstance();

            cal.setTimeInMillis(time);



            timeLabel = String.format("%d-%d %d:%d", cal.get(Calendar.MONTH + 1), cal.get(Calendar.DAY_OF_MONTH),

                    cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));

        }



        public long getTime() {

            return time;

        }



        public String getTimeLabel() {

            return timeLabel;

        }



        public Calendar getDate() {

            return date;

        }



        public int getId() {

            return (int) (getTime() / 1000 / 60);

        }



        @Override

        public String toString() {

            return getTimeLabel();

        }



    }



}

View Code

 

闹钟时间到，播放音乐的activity:PlayAlarmAty.java

package com.mytest.myclock;



import android.app.Activity;

import android.media.MediaPlayer;

import android.os.Bundle;



public class PlayAlarmAty extends Activity {



    private MediaPlayer player;

    

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.alarm_music_play);

        

        player = MediaPlayer.create(this, R.raw.an_angel);

        player.start();

    

    }

    

    @Override

    protected void onPause() {

        // TODO Auto-generated method stub

        super.onPause();

        

        finish();

    }

    

    @Override

    protected void onDestroy() {

        // TODO Auto-generated method stub

        super.onDestroy();

        player.stop();

        player.release();

    }

}

View Code

 

闹钟播放界面

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >



    <TextView

        android:textAppearance="?android:attr/textAppearanceLarge"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:gravity="center"

        android:text="@string/play_sound" />



</LinearLayout>

View Code

 

闹钟时间到，接收处理类AlarmReceiver.java

package com.mytest.myclock;



import android.app.AlarmManager;

import android.app.PendingIntent;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;



public class AlarmReceiver extends BroadcastReceiver {



    @Override

    public void onReceive(Context context, Intent intent) {

        System.out.println("AlarmReceiver.onReceive");



        AlarmManager manager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);



        manager.cancel(

                PendingIntent.getBroadcast(context, getResultCode(), new Intent(context, AlarmReceiver.class), 0));

    

        Intent it = new Intent(context, PlayAlarmAty.class);

        it.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        context.startActivity(it);

    }



}

View Code

 

AndroidMainfest.xml添加配置

        <receiver android:name=".AlarmReceiver"></receiver>

         <activity android:name="PlayAlarmAty" android:screenOrientation="portrait"></activity>

View Code

 

另：在res中添加音乐文件。