我有 2 个片段处于活动状态,并在平板电脑上并排显示。当用户从 FragmentA 中的列表视图中选择一个项目时,我需要将一些数据从 FragmentA 传递到 FragmentB。尝试将数据从活动获取到fragmentB 时出现我的问题。我收到错误消息:IlligalStateException:片段已处于活动状态。
我从这样的活动中传递数据:
@Override
public void onTrackSelected(String trackId) {
topBarFragment topBarFragment = (topBarFragment)getSupportFragmentManager().findFragmentById(R.id.topBar_fragment);
Bundle bundle = new Bundle();
bundle.putString("trackId", trackId);
//set Fragmentclass Arguments
topBarFragment.setArguments(bundle);
topBarFragment.onTrackSelected();
}
然后像这样在fragmentB中接收:
public void onTrackSelected() {
String trackId = getArguments().getString("trackId");
Toast.makeText(getActivity().getApplicationContext(), trackId,Toast.LENGTH_SHORT).show();
}
}
日志猫:
02-25 02:58:22.190: E/AndroidRuntime(29593): FATAL EXCEPTION: main
02-25 02:58:22.190: E/AndroidRuntime(29593): java.lang.IllegalStateException: Fragment already active
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.support.v4.app.Fragment.setArguments(Fragment.java:500)
02-25 02:58:22.190: E/AndroidRuntime(29593): at com.harteg.fragmentstest.ItemListActivity.onTrackSelected(ItemListActivity.java:88)
02-25 02:58:22.190: E/AndroidRuntime(29593): at com.harteg.fragmentstest.TracksFragment.onListItemClick(TracksFragment.java:136)
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.support.v4.app.ListFragment$2.onItemClick(ListFragment.java:58)
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.widget.AdapterView.performItemClick(AdapterView.java:298)
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.widget.AbsListView.performItemClick(AbsListView.java:1100)
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2749)
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.widget.AbsListView$1.run(AbsListView.java:3423)
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.os.Handler.handleCallback(Handler.java:725)
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.os.Handler.dispatchMessage(Handler.java:92)
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.os.Looper.loop(Looper.java:137)
02-25 02:58:22.190: E/AndroidRuntime(29593): at android.app.ActivityThread.main(ActivityThread.java:5039)
02-25 02:58:22.190: E/AndroidRuntime(29593): at java.lang.reflect.Method.invokeNative(Native Method)
02-25 02:58:22.190: E/AndroidRuntime(29593): at java.lang.reflect.Method.invoke(Method.java:511)
02-25 02:58:22.190: E/AndroidRuntime(29593): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
02-25 02:58:22.190: E/AndroidRuntime(29593): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
02-25 02:58:22.190: E/AndroidRuntime(29593): at dalvik.system.NativeStart.main(Native Method)