我试图调用输入对话框,在这有一个按钮(为简单起见)片段和对话框中有一个EditText字段中输入这样的文字:输入对话框
public class CreateDayFragment extends Fragment {
public CreateDayFragment(){
}
private Button button;![enter image description here][1]
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.createday_main, container, false);
button = (Button) getView().findViewById(R.id.createDayButton);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
showInputDialog();
}
});
return rootView;
}
protected void showInputDialog() {
LayoutInflater layoutInflater = LayoutInflater.from(CreateDayFragment.this.getActivity());
View promptView = layoutInflater.inflate(R.layout.createday_dialog, null);
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
CreateDayFragment.this.getActivity());
alertDialogBuilder.setView(promptView);
final EditText editText = (EditText) promptView
.findViewById(R.id.lectureDetailsEditText);
alertDialogBuilder
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Toast.makeText(getActivity().getApplicationContext(),"OK CLICKED",1000).show();
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = alertDialogBuilder.create();
alert.show();
}
}
但这不起作用。请帮忙,因为我无法找出问题。
8月11日至4日:43:54.800:E/AndroidRuntime(10568):致命异常:主 8月11日至4日:43:54.800:E/AndroidRuntime(10568):进程:com.example.loginphase ,PID:10568 11-04 08:43:54.800:E/AndroidRuntime(10568):java.lang.NullPointerException 11-04 08:43:54.800:E/AndroidRuntime(10568):at com.example.loginphase。 CreateDayFragment.onCreateView(CreateDayFragment.java:26) 11-04 08:43:54.800:E/AndroidRuntime(10568):at android.app.Fragment.performCreateView(Fragment.java:1700) 11-04 08:43: 54.800:E/AndroidRuntime(10568):在android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890) 11-04 08:43:54.800:E/AndroidRuntime(10568) :at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062) 11-04 08:43:54.800:E/AndroidRuntime(10568):at android.app.BackStackRecord.run(BackStackRecord.java:684) 11 -04 08:43:54.800:E/AndroidRuntime(10568):at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447) 11-04 08:43:54.800:E/AndroidRuntime(10568):at android。 app.FragmentManagerImpl $ 1.run(FragmentManager.java:443) 11-04 08:43:54.800:E/AndroidRuntime(10568):at android.os.Handler.handleCallback(Handler.java:733) 11-04 08 :43:54.800:E/AndroidRuntime(10568):at android.os.Handler.dispatchMessage(Handler.java:95) 11-04 08:43:54.800:E/AndroidRuntime(10568):at android.os.Looper .loop(Looper.java:136) 11-04 08:43:54.800:E/AndroidRuntime(10568):at android.app.Activity Thread.main(ActivityThread.java:5021) 11-04 08:43:54.800:E/AndroidRuntime(10568):at java.lang.reflect.Method.invokeNative(Native Method) 11-04 08:43:54.800 :E/AndroidRuntime(10568):在java.lang.reflect.Method.invoke(Method.java:515) 11-04 08:43:54.800:E/AndroidRuntime(10568):at com.android.internal.os (ZygoteInit.java:827) 11-04 08:43:54.800:E/AndroidRuntime(10568) 8月11日至4日:43:54.800:E/AndroidRuntime(10568):在dalvik.system.NativeStart.main(本机方法)
不工作means..what?你有没有得到任何错误..以明确的方式解释..这将有助于在这里正确回答你的问题。 – 2014-11-04 03:26:04
@RajaReddyPolamReddy在运行时崩溃。 – Smu 2014-11-04 03:29:41
当它崩溃....显示我的日志 – 2014-11-04 03:32:13