java – 如何使用片段添加timePicker?

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我的应用程序中有4个timePicker.当用户双击editText时,将弹出timePicker对话框.但有时当我不小心点击两次以上时,应用程序崩溃并说已经添加了片段.我怎样才能解决这个问题?两次点击editText,我只想在editText上单击一下就显示timePicker对话框.

public void onClick(View v) {
        int id = v.getId();
        if (id == R.id.editTextTI1) {
            tp.setFlag(TimePick.FLAG_START_DATE);
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            tp.show(ft,"TimePicker");
        }
        if (id == R.id.editTextTO1) {
            tp.setFlag(TimePick.FLAG_END_DATE);
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            tp.show(ft,"TimePicker");
        }
        if (id == R.id.editTextTI2) {
            tp.setFlag(TimePick.FLAG_START_DATE1);
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            tp.show(ft,"TimePicker");
        }
        if (id == R.id.editTextTO2) {
            tp.setFlag(TimePick.FLAG_END_DATE1);
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            tp.show(ft,"TimePicker");
        }
        if (id == R.id.editTextTI3) {
            tp.setFlag(TimePick.FLAG_START_DATE2);
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            tp.show(ft,"TimePicker");
        }
        if (id == R.id.editTextTO3) {
            tp.setFlag(TimePick.FLAG_END_DATE2);
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            tp.show(ft,"TimePicker");
        }
        if (id == R.id.editTextTI4) {
            tp.setFlag(TimePick.FLAG_START_DATE3);
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            tp.show(ft,"TimePicker");
        }
        if (id == R.id.editTextTO4) {
            tp.setFlag(TimePick.FLAG_END_DATE3);
            FragmentTransaction ft = getFragmentManager().beginTransaction();
            tp.show(ft,"TimePicker");
        }

    }




    public static class TimePick extends android.app.DialogFragment implements TimePickerDialog.OnTimeSetListener {

        public static final int FLAG_START_DATE = 00;
        public static final int FLAG_END_DATE = 01;
        public static final int FLAG_START_DATE1 = 10;
        public static final int FLAG_END_DATE1 = 11;
        public static final int FLAG_START_DATE2 = 20;
        public static final int FLAG_END_DATE2 = 21;
        public static final int FLAG_START_DATE3 = 30;
        public static final int FLAG_END_DATE3 = 31;
        private int flag = 00;

        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {

            final Calendar c = Calendar.getInstance();
            int hour = c.get(Calendar.HOUR_OF_DAY);
            int minute = c.get(Calendar.MINUTE);

            return new TimePickerDialog(getActivity(),this,hour,minute,DateFormat.is24HourFormat(getActivity()));
        }

        public void setFlag(int i) {
            flag = i;
        }

        @Override
        public void onTimeSet(TimePicker view,int hourofDay,int minute) {

            if (flag == FLAG_START_DATE) {
                start.setText(Integer.toString(hourofDay) + ":" + Integer.toString(minute));
                b = start.getText().toString();
            }
            if (flag == FLAG_END_DATE) {
                end.setText(Integer.toString(hourofDay) + ":" + Integer.toString(minute));
                c = end.getText().toString();
            }
            if (flag == FLAG_START_DATE1) {
                start1.setText(Integer.toString(hourofDay) + ":" + Integer.toString(minute));
                d = start1.getText().toString();
            }
            if (flag == FLAG_END_DATE1) {
                end1.setText(Integer.toString(hourofDay) + ":" + Integer.toString(minute));
                e1 = end1.getText().toString();
            }
            if (flag == FLAG_START_DATE2) {
                start2.setText(Integer.toString(hourofDay) + ":" + Integer.toString(minute));
                f = start2.getText().toString();
            }
            if (flag == FLAG_END_DATE2) {
                end2.setText(Integer.toString(hourofDay) + ":" + Integer.toString(minute));
                g = end2.getText().toString();
            }
            if (flag == FLAG_START_DATE3) {
                start3.setText(Integer.toString(hourofDay) + ":" + Integer.toString(minute));
                h = start3.getText().toString();
            }
            if (flag == FLAG_END_DATE3) {
                end3.setText(Integer.toString(hourofDay) + ":" + Integer.toString(minute));
                i = end3.getText().toString();
            }

LogCat错误

10-15 12:53:17.113    7943-7943/com.example.project.project E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.example.project.project,PID: 7943
    java.lang.IllegalStateException: Fragment already added: TimePick{7c7eb96 #0 TimePicker}
            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)
最佳答案
您的代码是如此硬编码并且不易扩展,这可能会导致将来出现许多错误.
您应该尽可能地将通用逻辑封装为最大值,因此在当前情况下:

 public void onClick(View v) {
    EditText editText = (EditText) v;
    if (tp==null || !tp.isAdded()){
        FragmentTransaction ft = getFragmentManager().beginTransaction();
        tp = new TimePick(editText);
        tp.show(ft,"TimePicker");
    }
}

@Override
public void onStop() {
    super.onStop();
    if (tp.isAdded()) tp.dismiss();
}

public static class TimePick extends android.app.DialogFragment implements TimePickerDialog.OnTimeSetListener {

    private EditText editText;

    public TimePick(EditText editText) {
        this.editText = editText;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {

        final Calendar c = Calendar.getInstance();
        int hour = c.get(Calendar.HOUR_OF_DAY);
        int minute = c.get(Calendar.MINUTE);

        return new TimePickerDialog(getActivity(),DateFormat.is24HourFormat(getActivity()));
    }

    @Override
    public void onTimeSet(TimePicker view,int minute) {
        editText.setText(Integer.toString(hourofDay) + ":" + Integer.toString(minute));
    }
}

如果屏幕上有任何代码,此代码将不会尝试创建新的时间选择器.您可以将目标edittext传递给timePicker片段.当您需要来自这些edittexts(您的a,b,c,d ……变量)的值时,您可以在需要时读取它,而不是onTimeSetMethod.

提供onStop方法来处理活动娱乐案例.在这里,我只是隐藏活跃的时间戳.

@H_301_34@

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