目前，我正在开发应用程序，可在选定的时间将手机设置为振动模式或振铃模式。我已经在我的应用程序中使用alarmmanager成功实现了这一点。 我希望我的应用程序在重新启动手机时记住所有待处理的意图。 我在互联网上找到了一个示例代码，但是当手机重启时，它似乎会崩溃我的应用程序。我不知道出了什么问题。
这是alarmreciever.java
package ishan.khandelwal.vitsilentmode;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.widget.Toast;
public class AlarmReciever extends BroadcastReceiver
{
private AudioManager mAudioManager;
@Override
public void onReceive(Context context, Intent intent)
{
// TODO Auto-generated method stub
if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {
Intent serviceIntent = new Intent("ishan.khandelwal.vitsilentmode");
context.startService(serviceIntent);
}
mAudioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
mAudioManager.setRingerMode(AudioManager.RINGER_MODE_VIBRATE);
// Show the toast
Toast.makeText(context, "Vibration Mode", Toast.LENGTH_SHORT).show();
}
}
Android清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="ishan.khandelwal.vitsilentmode"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<!-- permission required to use Alarm Manager -->
<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<receiver
android:name=".receiver.StartMyServiceAtBootReceiver"
android:enabled="true"
android:exported="true"
android:label="StartMyServiceAtBootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<activity
android:name="ishan.khandelwal.vitsilentmode.MainActivity"
android:label="@string/app_name"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="ishan.khandelwal.vitsilentmode.GetSlots"
android:label="Select your slots"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="ishan.khandelwal.vitsilentmode.MorningSlots"
android:label="Select your morning slots"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="ishan.khandelwal.vitsilentmode.EveningSlots"
android:label="Select your evening slots"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="ishan.khandelwal.vitsilentmode.Labs"
android:label="Select your lab slots"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="ishan.khandelwal.vitsilentmode.About"
android:label="About"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="ishan.khandelwal.vitsilentmode.AlarmReciever"
android:label="AlarmReciever" >
</activity>
<!-- Register the Alarm Receiver -->
<receiver android:name=".AlarmReciever"/>
<activity
android:name="ishan.khandelwal.vitsilentmode.RingerMode"
android:label="RingerMode" >
</activity>
<!-- Register the Alarm Receiver -->
<receiver android:name=".RingerMode"/>
</application>
logcat的：
07-23 23:33:12.057: I/ActivityManager(858): Start proc com.android.providers.calendar for broadcast com.android.providers.calendar/.CalendarReceiver: pid=1116 uid=10023 gids={3003}
07-23 23:33:12.067: I/ActivityThread(1116): Pub com.android.calendar: com.android.providers.calendar.CalendarProvider2
07-23 23:33:12.087: I/SurfaceFlinger(858): Boot is finished (2041 ms)
07-23 23:33:12.128: I/ActivityManager(858): Start proc ishan.khandelwal.vitsilentmode for broadcast ishan.khandelwal.vitsilentmode/.receiver.StartMyServiceAtBootReceiver: pid=1127 uid=10031 gids={}
07-23 23:33:12.137: D/AndroidRuntime(1127): Shutting down VM
07-23 23:33:12.137: W/dalvikvm(1127): threadid=1: thread exiting with uncaught exception (group=0xb6fac4f0)
07-23 23:33:12.137: E/AndroidRuntime(1127): FATAL EXCEPTION: main
07-23 23:33:12.137: E/AndroidRuntime(1127): java.lang.RuntimeException: Unable to instantiate receiver ishan.khandelwal.vitsilentmode.receiver.StartMyServiceAtBootReceiver: java.lang.ClassNotFoundException: ishan.khandelwal.vitsilentmode.receiver.StartMyServiceAtBootReceiver in loader dalvik.system.PathClassLoader[/data/app/ishan.khandelwal.vitsilentmode-1.apk]
07-23 23:33:12.137: E/AndroidRuntime(1127): at android.app.ActivityThread.handleReceiver(ActivityThread.java:1773)
07-23 23:33:12.137: E/AndroidRuntime(1127): at android.app.ActivityThread.access$2400(ActivityThread.java:117)
07-23 23:33:12.137: E/AndroidRuntime(1127): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:981)
07-23 23:33:12.137: E/AndroidRuntime(1127): at android.os.Handler.dispatchMessage(Handler.java:99)
07-23 23:33:12.137: E/AndroidRuntime(1127): at android.os.Looper.loop(Looper.java:130)
07-23 23:33:12.137: E/AndroidRuntime(1127): at android.app.ActivityThread.main(ActivityThread.java:3683)
07-23 23:33:12.137: E/AndroidRuntime(1127): at java.lang.reflect.Method.invokeNative(Native Method)
07-23 23:33:12.137: E/AndroidRuntime(1127): at java.lang.reflect.Method.invoke(Method.java:507)
07-23 23:33:12.137: E/AndroidRuntime(1127): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
07-23 23:33:12.137: E/AndroidRuntime(1127): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
07-23 23:33:12.137: E/AndroidRuntime(1127): at dalvik.system.NativeStart.main(Native Method)
07-23 23:33:12.137: E/AndroidRuntime(1127): Caused by: java.lang.ClassNotFoundException: ishan.khandelwal.vitsilentmode.receiver.StartMyServiceAtBootReceiver in loader dalvik.system.PathClassLoader[/data/app/ishan.khandelwal.vitsilentmode-1.apk]
07-23 23:33:12.137: E/AndroidRuntime(1127): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
07-23 23:33:12.137: E/AndroidRuntime(1127): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
07-23 23:33:12.137: E/AndroidRuntime(1127): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
07-23 23:33:12.137: E/AndroidRuntime(1127): at android.app.ActivityThread.handleReceiver(ActivityThread.java:1764)
07-23 23:33:12.137: E/AndroidRuntime(1127): ... 10 more
感谢您的帮助。
答案 0 :(得分：0)
好的，问题是您在AndroidManifest中指定了错误/不存在的接收器实现。你指定了这个：
<receiver
android:name=".receiver.StartMyServiceAtBootReceiver"
android:enabled="true"
android:exported="true"
android:label="StartMyServiceAtBootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
问题是你没有名为StartMyServiceAtBootReceiver的类。你认为你应该拥有的是这样的：
<receiver
android:name=".AlarmReceiver"
android:enabled="true"
android:exported="true"
android:label="StartMyServiceAtBootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>