我正在研究一个将运行ussd代码的android应用程序。但是当我点击列表项时,应用程序崩溃。 你能告诉我如何在if语句中写入列表中的第一个值而不需要手动编写所有数字吗?如何将调用功能添加到android片段类?
片段类别: 它具有呼叫功能...
/**
* A simple {@link Fragment} subclass.
* Activities that contain this fragment must implement the
* {@link ussd.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link ussd#newInstance} factory method to
* create an instance of this fragment.
*/
public class ussd extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private ListView listView;
private ussdadaper ussd;
private List<ussdz> ussdlist;
private OnFragmentInteractionListener mListener;
public ussd() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment ussd.
*/
// TODO: Rename and change types and number of parameters
public static ussd newInstance(String param1, String param2) {
ussd fragment = new ussd();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View rootView = inflater.inflate(R.layout.fragment_ussd, container, false);
listView = (ListView)rootView.findViewById(R.id.listView);
ussdlist = new ArrayList<>();
ussdlist.add(new ussdz(1,"*#44336#","Software Version Info"));
listView.setOnItemClickListener(
new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String item = (String)listView.getItemAtPosition(position);
if(position == 0){
Intent callIntent = new Intent(Intent.ACTION_CALL);
callIntent.setData(Uri.parse("*#44336#"));
callIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(callIntent);
}}
}
);
ussd = new ussdadaper(getActivity(),ussdlist);
listView .setAdapter(ussd); //you should setthe adapter to the listview
return rootView;
}
// TODO: Rename method, update argument and hook method into UI event
@Override
public void onAttach(Context context) {
super.onAttach(context);
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnFragmentInteractionListener {
public void onFragmentInteractionHome(Uri uri);
public void openHome(View view);
}
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
错误日志:
06-14 23:40:50.069 11155-11155/com.buckydroid。 E/InputEventReceiver:异常调度输入事件。在MessageQueue回调中的异常: handleReceiveCallback 06-14 23:40:50.082 11155-11155/com.buckydroid。 app.droidcpu E/MessageQueue-JNI:java.lang.ClassCastException: com.buckydroid.app.droidcpu.ussdz无法转换为java.lang.String layout.ussd $ 1.onItemClick(ussd.java:92) 在android.widget.AbsListView $ PerformClick.run(AbsListView.java:3217) at android.widget.AbsListView.performItemClick(AbsListView.java:1169) at android.widget.AdapterView.performItemClick在android.widget.AbsListView.onT ouchUp(AbsListView.java:4074) 在android.widget.AbsListView.onTouchEvent(AbsListView.java:3838) 在android.view.View.dispatchTouchEvent(View.java:9301) 在 android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2547) 在android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2240) 在 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553) 在android.view.ViewGroup.dispatchTouchEvent( (ViewGroup.java:2553) 在android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254) 在 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553) 在android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254) 在 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553) 在android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254) 在 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553) 在android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254) 在 com.android.internal.policy.PhoneWindow $ DecorView.superDispatchTouchEvent(PhoneWindow.java:2665) 在 com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1793) 在android.app.Activity .dispatchTouchEvent(Activity.java:3076) at com.android.internal.policy.PhoneWindow $ DecorView.dispatchTouchEvent(PhoneWindow.java:2626) at android.view.View.dispatchPointerEvent(View。Java的:9521) 在 android.view.ViewRootImpl $ ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4238) 在 android.view.ViewRootImpl $ ViewPostImeInputStage.onProcess(ViewRootImpl.java:4104) 在 android.view.ViewRootImpl $ InputStage.deliver(ViewRootImpl.java:3650) 在 android.view.ViewRootImpl $ InputStage.onDeliverToNext(ViewRootImpl.java:3703) 在 android.view.ViewRootImpl $ InputStage.forward(ViewRootImpl.java:3669) 在 android.view.ViewRootImpl $ AsyncInputStage.forward(ViewRootImpl.jav答:3795) 在android.view.ViewRootImpl $ InputStage.apply(ViewRootImpl.java:3677) 在 android.view.ViewRootImpl $ AsyncInputStage.apply(ViewRootImpl.java:3852) 在 android.view.ViewRootImpl $ InputStage.deliver(ViewRootImpl.java:3650) 在 android.view.ViewRootImpl $ InputStage.onDeliverToNext(ViewRootImpl.java:3703) 在 android.view.ViewRootImpl $ InputStage.forward(ViewRootImpl.java:3669) 在android.view.ViewRootImpl $ InputStage.apply(ViewRootImpl.java:3677) at android.view .ViewRootImpl $ InputStage.deliver(ViewRootImpl.java:3650) 在android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5932) 在 android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5906) 的机器人。 view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5867) 在 android.view.ViewRootImpl $ WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6035) 在 android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185) 在android.os.MessageQueue.nativePollOnce(Native Method) at android.os.MessageQ ueue.next(MessageQueue.java:323) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5471) at java.lang.reflect。 Method.invoke(Native Method) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 06-14 23:40:50.082 11155-11155/com.buckydroid.app.droidcpu D/AndroidRuntime:关闭VM 06-14 23:40:50.085 11155-11155/com.buckydroid.app.droidcpu E/AndroidRuntime :致命例外:main 进程:com.buckydroid.app.droidcpu,PID:11155 主题:主题:{default = overlay:com.zyxxeil.milos.ui, iconPack:com.zyxxeil.milos.ui,fontPkg:com.zyxxeil.milos.ui, com.android.systemui = overlay:com。 zyxxeil.milos.ui, com.android.systemui.navbar = overlay:com.zyxxeil.milos.ui} java.lang.ClassCastException:com.buckydroid.app.droidcpu.ussdz不能将 转换为java.lang。字符串 在layout.ussd $ 1.onItemClick(ussd.java:92) 在android.widget.AdapterView.performItemClick(AdapterView.java:310) 在android.widget.AbsListView.performItemClick(AbsListView.java:1169) 在android.widget.AbsListView $ PerformClick。运行(AbsListView.java:3217) 在android.widget.AbsListView.onTouchUp(AbsListView.java:4074) 在android.widget.AbsListView.onTouchEvent(AbsListView.java:3838) 在android.view.View.dispatchTouchEvent( View.java:9301) 在 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2547) 在android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2240) 在 android.view.ViewGroup.dispatchTransformedTouchEvent( ViewGroup.java:2553) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553) 在android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254) 在 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553) 在android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254) 在 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553) 在android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254) 在 android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553) at androi d.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254) 在 com.android.internal.policy.PhoneWindow $ DecorView.superDispatchTouchEvent(PhoneWindow.java:2665) 在 com.android.internal.policy.PhoneWindow。 superDispatchTouchEvent(PhoneWindow.java:1793) 在android.app.Activity.dispatchTouchEvent(Activity.java:3076) 在 com.android.internal.policy.PhoneWindow $ DecorView.dispatchTouchEvent(PhoneWindow.java:2626) 在安卓.view.View.dispatchPointerEvent(View.java:9521) at android.view.ViewRootImpl $ ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:42 38) 在 android.view.ViewRootImpl $ ViewPostImeInputStage.onProcess(ViewRootImpl.java:4104) 在 android.view.ViewRootImpl $ InputStage.deliver(ViewRootImpl.java:3650) 在 android.view.ViewRootImpl $ InputStage .onDeliverToNext(ViewRootImpl.java:3703) 在 android.view.ViewRootImpl $ InputStage.forward(ViewRootImpl.java:3669) 在 android.view.ViewRootImpl $ AsyncInputStage.forward(ViewRootImpl.java:3795) 在安卓.view.ViewRootImpl $ InputStage.apply(ViewRootImpl.java:3677) at android.view.ViewRootImpl $ AsyncInputStage.apply(ViewRootImpl.java:3852) 在 android.view.ViewRootImpl $ InputStage.deliver(ViewRootImpl.java:3650) 在 android.view.ViewRootImpl $ InputStage.onDeliverToNext(ViewRootImpl的.java:在 3703) 在 android.view.ViewRootImpl $ InputStage.forward(ViewRootImpl.java:3669) 在android.view.ViewRootImpl $ InputStage.apply(ViewRootImpl.java:3677) android.view.ViewRootImpl $ InputStage.deliver(ViewRootImpl.java:3650) at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl。Java的:5932) 在 android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5906) 在android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5867) 在 android.view.ViewRootImpl $ WindowInputEventReceiver.onInputEvent( ViewRootImpl.java:6035) 在 android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185) 在android.os.MessageQueue.nativePollOnce(本机方法) 在android.os.MessageQueue.next(MessageQueue.java: 323) 在android.os.Looper.loop(Looper.java:135) 在android.app.ActivityThread.main(ActivityThread.java:5471) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java :726) 在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
所以,如果我做错了什么在呼叫活动,请您帮助我。编译器显示没有错误。
如何解决:( – bucky
你是否看过我的整个答案?我其实涵盖了每一个案例。首先,如果你不需要'item',删除那一行(原因在你的代码中)不看你使用它)。 – Vucko
反正第一个解决方案为我工作。二是仍然显示错误。如果你能知道的解决方案,那么请分享否则忽略我可以手动添加的所有条件。我没有足够的声誉给予好评的答案很抱歉:(对于..谢谢你这么多.. – bucky