我已经让我的editText可点击。点击后会显示DatePicker dialog.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.information);
date = (EditText) findViewById(R.id.date);
dialog=new DateDialog();
date.setOnClickListener(this);
public void onClick(View arg0) {
FragmentTransaction ft = getFragmentManager().beginTransaction();
dialog.show(ft, "DatePicker");
}
public static class DateDialog extends android.app.DialogFragment implements DatePickerDialog.OnDateSetListener {
public DateDialog() {}
public Dialog onCreateDialog(Bundle savedInstanceState)
{
final Calendar c=Calendar.getInstance();
int year=c.get(Calendar.YEAR);
int month=c.get(Calendar.MONTH);
int day=c.get(Calendar.DAY_OF_MONTH);
return new DatePickerDialog(getActivity(),this,year,month,day);
}
public void onDateSet(DatePicker view,int year, int month, int day)
{
String date1=day+"-"+(month+1)+"-"+year;
date.setText(date1);
date2= date.getText().toString();
return ;
}
}
如果我不小心双击editText，应用程序崩溃并显示Fragment already added错误如下。
11-26 10:16:04.745 2348-2348/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.project.myapplication, PID: 2348
java.lang.IllegalStateException: Fragment already added: DateDialog{d1ca446 #0 DatePicker}
at android.app.FragmentManagerImpl.addFragment(FragmentManager.java:1219)
at android.app.BackStackRecord.run(BackStackRecord.java:715)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1535)
at android.app.FragmentManagerImpl$1.run(FragmentManager.java:482)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
有谁知道如何解决这一问题 ？谢谢
应用程序崩溃并显示片段已添加错误，如下所示
因为打电话给show方法。检查对话框是否显示，如果显示则丢弃单击事件，否则显示对话框：
Dialog dialogFrg=dialog.getDialog();
if(dialogFrg!=null && dialogFrg.isShowing()) {
// no need to call dialog.show(ft, "DatePicker");
} else {
// call dialog.show(ft, "DatePicker");
}
或者使用也可以使用boolean标志就像一个开关，通过设置标志来检查对话框是否显示true/false.
本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系:hwhale#tublm.com(使用前将#替换为@)
