AlarmManager的简单使用

标题

偶然间翻到公司的祖传代码，发现AlarmManager这个东西，原来确实没用过，找了点资料自己学习了下，在这记录下

主AlarmManagerActivity 代码

package com.jph.simple;import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.util.Log;
import android.view.View;
import android.widget.Toast;import com.jph.simple.service.AlarmService;import java.util.Calendar;/*** Created by wyb on 2018/2/24.* <p>* FLAG_CANCEL_CURRENT:如果当前系统中已经存在一个相同的PendingIntent对象，那么就将先将已有的PendingIntent取消，然后重新生成一个PendingIntent对象。* <p>* FLAG_NO_CREATE:如果当前系统中不存在相同的PendingIntent对象，系统将不会创建该PendingIntent对象而是直接返回null。* <p>* FLAG_ONE_SHOT:该PendingIntent只作用一次。在该PendingIntent对象通过send()方法触发过后，PendingIntent将自动调用cancel()进行销毁，那么如果你再调用send()方法的话，系统将会返回一个SendIntentException。* <p>* FLAG_UPDATE_CURRENT:如果系统中有一个和你描述的PendingIntent对等的PendingInent，那么系统将使用该PendingIntent对象，但是会使用新的Intent来更新之前PendingIntent中的Intent对象数据，例如更新Intent中的Extras*/public class AlarmManagerActivity extends Activity {private AlarmManager alManager;private AlarmReceiver alarmReceiver;/******receiver_action*******/public final static String ALARM_RECEIVER_ACTION = "receiver_alarm_action";/******activity_action*******/public final static String ALARM_ACTIVITY_ACTION = "activity_alarm_action";@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.alarmmanager_layout);alManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);//        System.out.println("----getLocalClassName---------" + getLocalClassName());
//        System.out.println("----getPackageName---------" + getPackageName());
//        System.out.println("----getComponentName---------" + getComponentName());
//        System.out.println("----getCallingPackage---------" + getCallingPackage());
//        System.out.println("----getTitle---------" + getTitle());/***********alarmManager广播注册*************/alarmReceiver = new AlarmReceiver();registerReceiver(alarmReceiver,new IntentFilter(ALARM_RECEIVER_ACTION));}/*** 开启定时任务* @param view*/public void startAlarmTask(View view) {Log.d(getLocalClassName(), "--------------you clicked me!");//showToastByCalendar();//showToastByMillis();//showToastReceiver();showToastActivity();}/*** service* 定时到秒*/void showToastByMillis() {Intent intent = new Intent(this, AlarmService.class);intent.setAction(AlarmService.ACTION_ALARM);PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);if (Build.VERSION.SDK_INT < 19) {alManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 5000, pendingIntent);} else {alManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 5000, pendingIntent);}}/*** serice* 定时到年月日*/void showToastByCalendar() {//定时时间为2018年2月24日15点25分0秒Calendar calendar = Calendar.getInstance();calendar.set(Calendar.YEAR, 2018);calendar.set(Calendar.MONTH, Calendar.FEBRUARY);calendar.set(Calendar.DAY_OF_MONTH, 24);calendar.set(Calendar.HOUR_OF_DAY, 15);calendar.set(Calendar.MINUTE, 25);calendar.set(Calendar.SECOND, 0);Intent intent = new Intent(this, AlarmService.class);intent.setAction(AlarmService.ACTION_ALARM);PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);if (Build.VERSION.SDK_INT < 19) {alManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);} else {alManager.setExact(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);}}/*** BroadcastReceiver* 接收定时任务*/void showToastReceiver(){Intent intent = new Intent();intent.setAction(ALARM_RECEIVER_ACTION);intent.putExtra("AlARMTASK","I am AlarmManager Timer Task by BroadcastReceiver");//sendBroadcast(intent); 这里不用写，否则会接收到两次PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);if (Build.VERSION.SDK_INT < 19) {alManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 5000, pendingIntent);} else {alManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 5000, pendingIntent);}}/*** activity* 接收定时任务*/void showToastActivity(){Intent intent = new Intent(this,ReceiverAlarmTaskActivity.class);intent.setAction(ALARM_ACTIVITY_ACTION);intent.putExtra("AlARMTASK","I am AlarmManager Timer Task by Activity");PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);if (Build.VERSION.SDK_INT < 19) {alManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 5000, pendingIntent);} else {alManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 5000, pendingIntent);}}/********************************************广播接收定时任务************************************************************/public class AlarmReceiver extends BroadcastReceiver{@Overridepublic void onReceive(Context context, Intent intent) {if (!intent.getAction().equals(ALARM_RECEIVER_ACTION)){return;}Toast.makeText(AlarmManagerActivity.this,intent.getStringExtra("AlARMTASK"),Integer.valueOf(1)).show();}}@Overrideprotected void onDestroy() {super.onDestroy();if (alarmReceiver!=null){unregisterReceiver(alarmReceiver);}}
}

AlarmService

package com.jph.simple.service;import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;public class AlarmService extends Service {public static String ACTION_ALARM = "action_alarm";private Handler alarmHandler = new Handler(Looper.getMainLooper());public AlarmService() {}@Overridepublic IBinder onBind(Intent intent) {// TODO: Return the communication channel to the service.return null;}@Overridepublic int onStartCommand(Intent intent, int flags, int startId) {if (!intent.getAction().equals(ACTION_ALARM)){Log.d(getPackageName(),"--------no fitter action-------------");}alarmHandler.post(new Runnable() {@Overridepublic void run() {Log.d(getPackageName(),"---------I am coming");Toast.makeText(AlarmService.this,"我是闹钟",Toast.LENGTH_SHORT).show();}});return super.onStartCommand(intent, flags, startId);}
}

AlarmManagerActivity 布局文件

<?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"><Button
        android:layout_width="match_parent"android:layout_height="wrap_content"android:onClick="startAlarmTask"android:text="@string/start_alarmTask" /></LinearLayout>

ReceiverAlarmTaskActivity代码

package com.jph.simple;import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;public class ReceiverAlarmTaskActivity extends AppCompatActivity {private TextView alarmTaskActivity_tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_receiver_alarm_task);alarmTaskActivity_tv = findViewById(R.id.alarmTaskActivity_tv);try {boolean actionIs = getIntent().getAction().equals(AlarmManagerActivity.ALARM_ACTIVITY_ACTION);if (actionIs){String taskString = getIntent().getStringExtra("AlARMTASK");Toast.makeText(this,taskString,Integer.valueOf(1)).show();alarmTaskActivity_tv.setText(taskString);}}catch (Exception e){e.printStackTrace();}}
}

布局文件

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context="com.jph.simple.ReceiverAlarmTaskActivity"><TextView
        android:id="@+id/alarmTaskActivity_tv"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginBottom="8dp"android:layout_marginEnd="8dp"android:layout_marginStart="8dp"android:layout_marginTop="8dp"android:text="TextView"android:textSize="@dimen/textview_22sp"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>

清单文件

<activity
            android:name=".AlarmManagerActivity"android:launchMode="singleTop"android:screenOrientation="portrait"android:windowSoftInputMode="adjustPan" /><service
            android:name=".service.AlarmService"android:enabled="true"android:exported="false" /><activity android:name=".ReceiverAlarmTaskActivity"><intent-filter><action android:name="activity_alarm_action" /><category android:name="android.intent.category.DEFAULT" /></intent-filter></activity>

代码都很简单，看注释都应该可以看懂了

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AlarmManager的简单使用

标题

主AlarmManagerActivity 代码

AlarmService

AlarmManagerActivity 布局文件

ReceiverAlarmTaskActivity代码

布局文件

清单文件

AlarmManager的简单使用相关推荐

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