我对谷歌地图的示例代码有疑问! 当我使用 eclipse 时,这段代码有效。我换了android studio,出现了一个错误。
错误是:(我没有 onSaveInstanceState 方法)
Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1360)
at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1378)
at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:595)
at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:574)
at android.support.v4.app.DialogFragment.show(DialogFragment.java:138)
at com.example.smartoo.HomeActivity.servicesConnected(HomeActivity.java:325)
at com.example.smartoo.HomeActivity.stopUpdates(HomeActivity.java:373)
at com.example.smartoo.HomeActivity.onStop(HomeActivity.java:209)
at android.app.Instrumentation.callActivityOnStop(Instrumentation.java:1212)
at android.app.Activity.performStop(Activity.java:5376)
at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3185)
at android.app.ActivityThread.handleStopActivity(ActivityThread.java:3234)
at android.app.ActivityThread.access$1100(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1223)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
此行有错误:
errorFragment.show(getSupportFragmentManager(), LocationUtils.APPTAG);
代码:
/**
* Verify that Google Play services is available before making a request.
*
* @return true if Google Play services is available, otherwise false
*/
private boolean servicesConnected() {
// Check that Google Play services is available
int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
// If Google Play services is available
if (ConnectionResult.SUCCESS == resultCode) {
// In debug mode, log the status
Log.d(LocationUtils.APPTAG, getString(R.string.play_services_available));
// Continue
return true;
// Google Play services was not available for some reason
} else {
// Display an error dialog
Dialog dialog = GooglePlayServicesUtil.getErrorDialog(resultCode, this, 0);
if (dialog != null) {
ErrorDialogFragment errorFragment = new ErrorDialogFragment();
errorFragment.setDialog(dialog);
errorFragment.show(getSupportFragmentManager(), LocationUtils.APPTAG);
}
return false;
}
}
谢谢!
最佳答案
通常,上面的代码是在 onStart
/OnResume
方法内部或这些方法之后调用的,而不是在 onStop
/onSaveInstance< 内部调用的
。您正在尝试在 Activity 被杀死后执行一些操作。在调用 onStop/finish/saveInstances
方法之前执行 serivcesConnected
调用。
关于java - 新错误 java.lang.IllegalStateException : Can not perform this action after onSaveInstanceState,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24799369/