我想开发一个报警的应用。 该应用程序应该是这样的:
I'd like develop an Alarm Application. The application should work like this:
- 启动它
- 活动让我的时间
- 我可以设置报警
- 我可以关闭应用程序
- 当报警时间已到,开始一个活动(即使设备处于锁定状态)
我试图去适应这个样本 github/commonsguy/cwac-wakeful但我不能启动一个活动时,报警时间已到。
I have tried to adapt this sample github/commonsguy/cwac-wakeful but I cannot launch an activity when the alarm time comes.
我用这个code设置的报警器(用于测试我都插在活动的的onCreate 方法,此code):
I use this code to setup the alarm (for test I have inserted this code on an onCreate method of activity):
Intent intent = new Intent(this, OnAlarmReceiver.class); PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0); Calendar cal = Calendar.getInstance(); cal.add(Calendar.SECOND, 10); AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE); alarm.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, cal.getTimeInMillis(), pendingIntent);这是OnAlarmReceiver类:
this is the OnAlarmReceiver class:
public class OnAlarmReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Log.i(ClockActivity.LOG_TAG, "OnAlarmReceiver::onReceive"); WakefulIntentService.sendWakefulWork(context, AlarmService.class); } }这是服务类:
public class AlarmService extends WakefulIntentService { public AlarmService(String name) { super(name); } @Override protected void doWakefulWork(Intent intent) { Log.i(ClockActivity.LOG_TAG, "AlarmService::doWakefulWork"); Intent newIntent = new Intent(getApplicationContext(), ClockActivity.class); newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); newIntent.setAction(ClockActivity.ALARM_ACTION); getApplicationContext().startActivity(newIntent); } }这是明显的,其中有设置服务和接收器的部分:
this is the portion of Manifest where are setup the service and the receiver:
<receiver android:name=".OnAlarmReceiver"></receiver> <service android:name=".AlarmService"></service>
在doWakefulWork方法不会被调用!
the doWakefulWork method is never called!
推荐答案我做了这个应用程序:
AlarmActivity.java
package com.foo; import pack.breceiver.MyBroadcastReceiver; import android.app.Activity; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.EditText; import android.widget.Toast; import android.app.Activity; import android.os.Bundle; public class AlarmActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } public void startAlert(View view) { EditText text = (EditText) findViewById(R.id.time); int i = Integer.parseInt(text.getText().toString()); Intent intent = new Intent(this, MyBroadcastReceiver.class); PendingIntent pendingIntent = PendingIntent.getBroadcast( this.getApplicationContext(), 234324243, intent, 0); AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE); alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (i * 1000), pendingIntent); Toast.makeText(this, "Alarm set in " + i + " seconds", Toast.LENGTH_LONG).show(); } }
MyBroadcastReceiver.java
package pack.breceiver; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.os.Vibrator; import android.widget.Toast; public class MyBroadcastReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Toast.makeText(context, "Don't panik but your time is up!!!!", Toast.LENGTH_LONG).show(); /*// Vibrate the mobile phone Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE); vibrator.vibrate(2000); */ } }更多推荐
开发警报应用
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