私のアプリでは、ネットワーク接続があるかどうかを確認しています。ない場合は、アクティビティを開始し、接続が回復したら、そのアクティビティを終了します。ブロードキャストレシーバーを使用してネットワーク接続を確認していますが、そのアクティビティを終了する必要があるときにアプリケーションがクラッシュし、が表示されますRestrictedContext error
。
LogCatの出力は次のとおりです。
01-05 14:22:21.543: E/AndroidRuntime(7064): FATAL EXCEPTION: main
01-05 14:22:21.543: E/AndroidRuntime(7064): java.lang.RuntimeException: Unable to start receiver net.evolution.betting.application.ConnectionChangeReceiver: java.lang.ClassCastException: android.app.ReceiverRestrictedContext
01-05 14:22:21.543: E/AndroidRuntime(7064): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2821)
01-05 14:22:21.543: E/AndroidRuntime(7064): at android.app.ActivityThread.access$3200(ActivityThread.java:125)
01-05 14:22:21.543: E/AndroidRuntime(7064): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2083)
01-05 14:22:21.543: E/AndroidRuntime(7064): at android.os.Handler.dispatchMessage(Handler.java:99)
01-05 14:22:21.543: E/AndroidRuntime(7064): at android.os.Looper.loop(Looper.java:123)
01-05 14:22:21.543: E/AndroidRuntime(7064): at android.app.ActivityThread.main(ActivityThread.java:4627)
01-05 14:22:21.543: E/AndroidRuntime(7064): at java.lang.reflect.Method.invokeNative(Native Method)
01-05 14:22:21.543: E/AndroidRuntime(7064): at java.lang.reflect.Method.invoke(Method.java:521)
01-05 14:22:21.543: E/AndroidRuntime(7064): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
01-05 14:22:21.543: E/AndroidRuntime(7064): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
01-05 14:22:21.543: E/AndroidRuntime(7064): at dalvik.system.NativeStart.main(Native Method)
01-05 14:22:21.543: E/AndroidRuntime(7064): Caused by: java.lang.ClassCastException: android.app.ReceiverRestrictedContext
01-05 14:22:21.543: E/AndroidRuntime(7064): at net.evolution.betting.application.ConnectionChangeReceiver.onReceive(ConnectionChangeReceiver.java:37)
01-05 14:22:21.543: E/AndroidRuntime(7064): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2810)
01-05 14:22:21.543: E/AndroidRuntime(7064): ... 10 more
そしてここにクラスソースがあります:
public class ConnectionChangeReceiver extends BroadcastReceiver {
@Override
public void onReceive( Context context, Intent intent ) {
ActivityManager activityManager = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> activitys = activityManager.getRunningTasks(Integer.MAX_VALUE);
boolean isActivityFound = false;
for (int i = 0; i < activitys.size(); i++) {
if (activitys.get(i).topActivity.toString().equalsIgnoreCase("ComponentInfo{net.evolution.betting.application/net.evolution.betting.application.NotationActivity}")) {
isActivityFound = true;
}
}
ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService( Context.CONNECTIVITY_SERVICE );
NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
NetworkInfo mobNetInfo = connectivityManager.getNetworkInfo( ConnectivityManager.TYPE_MOBILE );
if ( activeNetInfo != null && isActivityFound == true) {
((NotationActivity)context).finish();
}else if( activeNetInfo == null){
Intent i = new Intent("net.evolution.betting.application.NOTATIONACTIVITY");
i.putExtra("DialogTitle", "Warining!");
i.putExtra("DialogBody", "It seems like your app is not connected to Internet witch is required.Please check your network connection.");
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
}
}