Question

我开发Android应用程序，不幸的是在一些旧设备中它无法正常工作...我只是在我的TextView上设置了点击监听器，并在我的日期选择器代码中显示了datePicker Dialogue，只是将日期设置为相同的textView。

在我的活动中：

Feild_Age.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                DialogFragment fragment = new DatePickerFragment();
                fragment.show(getFragmentManager(), "Date Picker");
            }
        });

我的日期选择器片段代码.... 所有这些代码都在我的单一活动中。

public static class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {


        @RequiresApi(api = Build.VERSION_CODES.N)
        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            final Calendar calendar = Calendar.getInstance();
            int YEAR = calendar.get(Calendar.YEAR);
            int MONTH = calendar.get(Calendar.MONTH);
            int DAY = calendar.get(Calendar.DAY_OF_MONTH);

            DatePickerDialog DPD = new DatePickerDialog(getActivity(), android.app.AlertDialog.THEME_DEVICE_DEFAULT_DARK, this, YEAR, MONTH, DAY);

            return DPD;
        }

        @RequiresApi(api = Build.VERSION_CODES.N)
        @Override
        public void onDateSet(DatePicker datePicker, int YEAR, int MONTH, int DAY) {

//            TextView textView
            Calendar calendar = Calendar.getInstance();
            calendar.setTimeInMillis(0);
            calendar.set(YEAR, MONTH, DAY, 0, 0, 0);
            Date date = calendar.getTime();


            DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.MEDIUM, Locale.US);
            String forMatedDate = dateFormat.format(date);
            TextView Feild_Age = (TextView) getActivity().findViewById(R.id.age_of_user);
            Feild_Age.setText(forMatedDate);
            if (!Feild_Age.getText().toString().trim().equals("SELECT YOUR AGE")) {
                TextView dobb = (TextView) getActivity().findViewById(R.id.year_ofDOB);
                dobb.setText(String.valueOf(YEAR));
            }
        }
    }

logcat的

08-21 22：40：47.015 2755-2755 / com.jeffysmak.blooddonationpk E / AndroidRuntime：FATAL EXCEPTION：主要流程： com.jeffysmak.blooddonationpk，PID：2755 java.lang.NoClassDefFoundError：android.icu.util.Calendar at com.jeffysmak.blooddonationpk.DonorProfile $ DatePickerFragment.onCreateDialog（DonorProfile.java:252）在 android.app.DialogFragment.getLayoutInflater（DialogFragment.java:398）在 android.app.FragmentManagerImpl.moveToState（FragmentManager.java:890）在 android.app.FragmentManagerImpl.moveToState（FragmentManager.java:1062）在android.app.BackStackRecord.run（BackStackRecord.java:684）at android.app.FragmentManagerImpl.execPendingActions（FragmentManager.java:1447）在android.app.FragmentManagerImpl $ 1.run（FragmentManager.java：443）at android.os.Handler.handleCallback（Handler.java:733）at android.os.Handler.dispatchMessage（Handler.java:95）at android.os.Looper.loop（Looper.java:136）at android.app.ActivityThread.main（ActivityThread.java:5045）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）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:595）at dalvik.system.NativeStart.main（原生方法）

亲切的帮助......谢谢：）

Answer 1

java.lang.NoClassDefFoundError：android.icu.util.Calendar

刚刚将导入从android.icu.util.Calendar更改为java.util.Calendar

来源：Android Studio stack=java.lang.NoClassDefFoundError: Failed resolution of: Landroid/icu/util/Calendar;

Android日期选择器错误

1 个答案: