Android-java.lang.RuntimeException:无法启动接收器
我用自定义应用程序类(MyApplication.java)和BroadcastReceiver类(ConnectivityReceiver.java)编写了一个应用程序 然而,我有时会从用户那里得到错误报告Android-java.lang.RuntimeException:无法启动接收器,android,nullpointerexception,broadcastreceiver,runtimeexception,getresource,Android,Nullpointerexception,Broadcastreceiver,Runtimeexception,Getresource,我用自定义应用程序类(MyApplication.java)和BroadcastReceiver类(ConnectivityReceiver.java)编写了一个应用程序 然而,我有时会从用户那里得到错误报告 java.lang.RuntimeException: Unable to start receiver my.package.background.ConnectivityReceiver: java.lang.RuntimeException: Unable to create ap
java.lang.RuntimeException: Unable to start receiver my.package.background.ConnectivityReceiver:
java.lang.RuntimeException: Unable to create application my.package.MyApplication:
我不知道为什么会出现这个例外
下面是堆栈跟踪和相关文件的详细信息
堆栈跟踪
java.lang.RuntimeException: Unable to start receiver my.package.background.ConnectivityReceiver:
java.lang.RuntimeException: Unable to create application my.package.MyApplication:
java.lang.NullPointerException
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2287)
at android.app.ActivityThread.access$1600(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1313)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
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:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Unable to create application my.package.MyApplication: java.lang.NullPointerException
at android.app.LoadedApk.makeApplication(LoadedApk.java:514)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2267)
... 10 more
Caused by: java.lang.NullPointerException
at my.package.MyApplication.setLanguage(MyApplication.java:137)
at my.package.MyApplication.onCreate(MyApplication.java:83)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1014)
at android.app.LoadedApk.makeApplication(LoadedApk.java:511)
... 11 more
java.lang.RuntimeException: Unable to create application my.package.MyApplication: java.lang.NullPointerException
at android.app.LoadedApk.makeApplication(LoadedApk.java:514)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2267)
at android.app.ActivityThread.access$1600(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1313)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
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:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at my.package.MyApplication.setLanguage(MyApplication.java:137)
at my.package.MyApplication.onCreate(MyApplication.java:83)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1014)
at android.app.LoadedApk.makeApplication(LoadedApk.java:511)
... 11 more
java.lang.NullPointerException
at my.package.MyApplication.setLanguage(MyApplication.java:137)
at my.package.MyApplication.onCreate(MyApplication.java:83)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1014)
at android.app.LoadedApk.makeApplication(LoadedApk.java:511)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2267)
at android.app.ActivityThread.access$1600(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1313)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
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:1038)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
MyApplication.java
public class MyApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
//onCreate(MyApplication.java:83) refer to next line
setLanguage();
}
private void setLanguage() {
//setLanguage(MyApplication.java:137) refer to nextline
Configuration config = getResources().getConfiguration();
Log.i("MyApplication", "current language setting is: " + config.locale.getLanguage());
}
}
ConnectivityReceiver.java
public class ConnectivityReceiver extends BroadcastReceiver {
public ConnectivityReceiver() {
}
@Override
public void onReceive(Context context, Intent intent) {
Log.i(this.getClass().getSimpleName(), "onReceive");
}
}
AndroidManifest.xml
...
<receiver android:name=".package.background.ConnectivityReceiver">
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
<action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
</intent-filter>
</receiver>
...
。。。
...
@MikeM。请参阅MyApplication.java,我已经用注释样式标记了相关行。@MikeM。请参阅MyApplication.java,我已经用注释样式标记了相关行。