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[英]how we can open my app at daily alarm.can i use pushregistry as a daily alarm
[英]My Application Is crashing when I'm using Daily repeating Alarm
我每天嘗試在固定時間觸發警報,但是單擊按鈕觸發警報時,我的應用程序崩潰了。 請幫助找到解決方案。 提前致謝 。
這是我的主要活動代碼:-
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import java.util.Calendar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY,15);
calendar.set(Calendar.MINUTE,9);
calendar.set(Calendar.SECOND,20);
Intent intent = new Intent(getApplicationContext(), Notification_receiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(),100,intent,PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),AlarmManager.INTERVAL_DAY,pendingIntent);
}
});
}
}
這是我的Notification_receiver.java文件:
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.support.v4.app.NotificationCompat;
class Notification_receiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Intent repeating_intent = new Intent(context,Repeating_activity.class);
repeating_intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent .getActivity(context,100,repeating_intent,PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.setContentIntent(pendingIntent)
.setSmallIcon(android.R.drawable.sym_def_app_icon)
.setContentTitle("Notification Tittle")
.setContentText("Notification Text")
.setAutoCancel(true);
notificationManager.notify(100,builder.build());
}
}
如果需要,這是清單:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.hacker.timernotification">
<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/> //I tried with and without this but still crashing my app
<uses-permission android:name="android.permission.WAKE_LOCK"/> // this is at the time of fire alarm
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<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=".Repeating_activity"/>
<receiver android:name=".Notification_receiver"></receiver>
<!--android:enabled="true"
android:exported="true-->"/>
</application>
</manifest>
這是Repeating_activity.java文件:-
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
class Repeating_activity extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.repeating_activity_layout);
}
}
我在我的項目中擁有的activity_main.xml和repeating_activity_layout.xml不在此處粘貼,因為我認為這不是必需的。
這是我的應用程序崩潰后得到的錯誤:-
16297-16297/com.example.hacker.timernotification E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate receiver com.example.hacker.timernotification.Notification_receiver: java.lang.IllegalAccessException: access to class not allowed
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2436)
at android.app.ActivityThread.access$1600(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1365)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5317)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalAccessException: access to class not allowed
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1319)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2431)
at android.app.ActivityThread.access$1600(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1365)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5317)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
at dalvik.system.NativeStart.main(Native Method)
請幫助找到解決方案。 任何幫助將不勝感激
像這樣公開您的“ Notification_receiver”類
public class Notification_receiver extends BroadcastReceiver
{
// your code
}
它應該工作。
如下更新清單
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.hacker.timernotification">
<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<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=".Repeating_activity"/>
<receiver android:name=".Notification_receiver"
android:directBootAware="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
bootAware是必需的,因為在重新啟動設備后,警報將被禁用,為了再次啟用它,必須使用它。 希望這可以幫助
Dint注意到了,同意了高塔姆的回答
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