简易的自定义闹钟

2019-11-08 02:47:10

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来源：转载

供稿：网友

相信大家都有早上起不来的时候，是否想过自己做一个关不掉的闹钟呢？当然自己做的自己可以关，也可以有不能关的

其实做一个闹钟并不难，首先要得到闹钟管理器AlarmManager 然后就是设置闹钟的时间了，

当你点击设置的时候要获取系统当前的时间

Calendar calendar=Calendar.getInstance();                int hour=calendar.get(Calendar.HOUR_OF_DAY);                int minute=calendar.get(Calendar.MINUTE);然后要弹出时间对话框TimePickerDialog,再设置闹钟的时间，时间一到,发送广播（闹钟响了），广播接受者中跳转Activity，然后再那个Activity中播放音乐
另外还可以添加通知管理器NotifitionManager在通知栏可以显示消息
大致思路就是这样接下来就看代码吧
主要布局MainActivity
 <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="设置闹钟(一次)"        android:id="@+id/setAlarm"        />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="设置闹钟(周期)"        android:id="@+id/setAlarmCycle"        />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="取消周期"        android:id="@+id/cancelCycle"        />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="发送通知"        android:id="@+id/sendNotification"        />MainActivity的主要代码public class MainActivity extends AppCompatActivity {    PRivate AlarmManager alarmManager;    private PendingIntent pendingIntent;    private Button setAlarm;    private Button setAlarmCycle;    private Button cancelCycle;    private Button sendNotification;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //获取闹钟管理者        alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);        setAlarm = (Button) findViewById(R.id.setAlarm);        setAlarmCycle = (Button) findViewById(R.id.setAlarmCycle);        cancelCycle = (Button) findViewById(R.id.cancelCycle);        sendNotification = (Button) findViewById(R.id.sendNotification);        setAlarm.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                //获取当前系统的时间                Calendar calendar=Calendar.getInstance();                int hour=calendar.get(Calendar.HOUR_OF_DAY);                int minute=calendar.get(Calendar.MINUTE);                //弹出时间对话框                TimePickerDialog timePickerDialog=new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {                    @Override                    public void onTimeSet(TimePicker timePicker, int i, int i1) {                        Calendar c=Calendar.getInstance();                        c.set(Calendar.HOUR_OF_DAY,i);                        c.set(Calendar.MINUTE,i1);                        Intent intent=new Intent();                        intent.setAction("com.zking.g150820_android28_alarm_notification.RING");                        //将来时态的跳转  ang eng ing ong                        PendingIntent pendingIntent=PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);                        //设置闹钟                        alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);                        //时间一到，发送广播（闹钟响了）                        //广播接受者中（跳转Activity）                        // 跳转Activity，在这个Activity中播放音乐                    }                },hour,minute,true);                timePickerDialog.show();            }        });        setAlarmCycle.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                //获取当前系统的时间                Calendar calendar=Calendar.getInstance();                int hour=calendar.get(Calendar.HOUR_OF_DAY);                int minute=calendar.get(Calendar.MINUTE);                //弹出时间对话框                TimePickerDialog timePickerDialog=new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {                    @Override                    public void onTimeSet(TimePicker timePicker, int i, int i1) {                        Calendar c=Calendar.getInstance();                        c.set(Calendar.HOUR_OF_DAY,i);                        c.set(Calendar.MINUTE,i1);                        Intent intent=new Intent();                        intent.setAction("com.zking.g150820_android28_alarm_notification.RING");                        //将来时态的跳转  ang eng ing ong                        pendingIntent = PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);                        //设置闹钟//                alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);                        //设置周期闹钟                        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),5000, pendingIntent);                        //时间一到，发送广播（闹钟响了）                        //广播接受者中（跳转Activity）                        // 跳转Activity，在这个Activity中播放音乐                    }                },hour,minute,true);                timePickerDialog.show();            }        });        cancelCycle.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                alarmManager.cancel(pendingIntent);            }        });        sendNotification.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                //实例化通知管理器                NotificationManager notificationManager= (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);                //实例化通知                NotificationCompat.Builder builder=new NotificationCompat.Builder(MainActivity.this);                builder.setContentTitle("温馨提示");                builder.setContentText("天气转变大注意适当增减衣服");                builder.setDefaults(NotificationCompat.DEFAULT_ALL);                builder.setAutoCancel(true);                builder.setSmallIcon(android.R.drawable.ic_media_play);                builder.setContentIntent(PendingIntent.getActivity(MainActivity.this,0x102,new Intent(MainActivity.this,RingActivity.class),0));                Notification notification=builder.build();                //发送通知                notificationManager.notify(0x101,notification);            }        });    }}响铃时的布局文件
<TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="懒pig,该起床了！！！"        android:textSize="30sp"        />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="停止"        android:id="@+id/stop"        />
广播接受者的代码
public class RingReceived extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        if("com.zking.g150820_android28_alarm_notification.RING".equals(intent.getAction())){            Log.i("test","闹钟响了");            //跳转到Activity            Intent intent1=new Intent(context,RingActivity.class);            //给Intent设置标志位            intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            context.startActivity(intent1);        }    }}响铃的Activitypublic class RingActivity extends AppCompatActivity {    private MediaPlayer mediaPlayer;    private Button stop;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_ring);        stop = (Button) findViewById(R.id.stop);        stop.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                mediaPlayer.stop();                finish();            }        });        mediaPlayer = MediaPlayer.create(this, R.raw.love);        mediaPlayer.start();    }}既然有 清单文件别忘了配置哦
	<activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name=".RingActivity"></activity>            <receiver android:name=".RingReceived">                <intent-filter>                    <action android:name="com.example.clerknaozhong.RING"></action>                </intent-filter>            </receiver>
那么这样一个简单的闹钟就完成了