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在Dialogfragment中显示DatePickerDialog

android-dialogfragment android

Ofek Pintok · 技术社区 · 7 年前

DialogFragment 有一个 EditText 编辑文本 DatePickerDialog 假设从用户那里选择一个日期,然后在 对话片段

DatePickerDialog实际上出现了,但却破坏了旧的 对话片段
我想把我选的日期传给碎片。如果我想把它传给某个活动,因为我可以使用 getActivity() 方法。那么,我怎样才能把我挑选的日期传递回称为挑选者的片段呢?

主碎片

public class NewWorkoutItemFragment extends android.app.DialogFragment implements
    View.OnClickListener {

private String mDate;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = inflater.inflate(R.layout.fragment_new_workout_item, container, false);

    //A lot of code

    return view;
}

@Override
public void onClick(View v) {
switch (v.getId()){
    case R.id.NewWorkout_date_et:
        //Call to DatePickerDialog
        DialogFragment pickDate = new DatePickerFragment();
        pickDate.show(getFragmentManager(), "show");
}

public void setmDate(String mDate) {
    this.mDate = mDate;
}
}

日期选择器碎片

public class DatePickerFragment extends android.app.DialogFragment implements DatePickerDialog.OnDateSetListener {

@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Use the current date as the default date in the picker.
    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);

    // Create a new instance of DatePickerDialog and return it.
    return new DatePickerDialog(getActivity(), this, year, month, day);
}

@Override
public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
String dateString = Integer.toString(dayOfMonth) +
                "/" + Integer.toString(month+1) +
                "/" + Integer.toString(year);
    //note- Return dateString back to NewWorkoutItemFragment, using setmDate
}
}

2 回复 | 直到 7 年前

Feedforward 7 年前

你应该使用 'com.wdullaer:materialdatetimepicker:2.3.0' 图书馆 datepicker 或 timepicker 对话框。
app level gradle file . 之后创建一个新的java文件 NewWorkoutItemFragment extends DialogFragment

public class NewWorkoutItemFragment extends DialogFragment implements 
DatePickerDialog.OnDateSetListener {

@OnClick(R.id.layout_time)
public void onClickTime(View view){
    calendar= Calendar.getInstance();


        datePickerDialog= TimePickerDialog.newInstance(NewWorkoutItemFragment.this,
                calendar.get(Calendar.YEAR), // Initial year selection
                calendar.get(Calendar.MONTH), // Initial month selection
                calendar.get(Calendar.DAY_OF_MONTH) // Inital day selection
                false);

    datePickerDialog.setThemeDark(false);
    datePickerDialog.setAccentColor(Color.parseColor("#58a5f0"));
    datePickerDialog.setTitle("Select Date");
    datePickerDialog.show(getFragmentManager(),"DatePicker Dialog");

}

public NewWorkoutItemFragment() {
}

public static NewWorkoutItemFragment newInstance (String title) {
    NewWorkoutItemFragment frag = new NewWorkoutItemFragment();
    Bundle args = new Bundle();
    args.putString("title", title);
    frag.setArguments(args);
    return frag;
}

@Override
public void onAttach(final Context context) {
    super.onAttach(context);
}

@Override
public void onDetach() {
    super.onDetach();
}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    final Dialog dialog = super.onCreateDialog(savedInstanceState);

    final Window window = dialog.getWindow();
    if (window != null) {
        window.requestFeature(Window.FEATURE_NO_TITLE);
        window.setBackgroundDrawableResource(android.R.color.transparent);

        WindowManager.LayoutParams windowLayoutParams = window.getAttributes();
        windowLayoutParams.dimAmount = DIM_AMOUNT;
    }
    dialog.setCancelable(false);
    dialog.setCanceledOnTouchOutside(false);
    return dialog;
}


@Nullable
@Override
public View onCreateView(final LayoutInflater inflater,
                         final ViewGroup container,
                         final Bundle savedInstanceState) {
    final View view = inflater.inflate(R.layout.dlg_network, container, false);
    return view;
}

@Override
public void onResume() {
    super.onResume();
    final int width = getScreenWidth();
    changeWindowSizes(width, ViewGroup.LayoutParams.WRAP_CONTENT);
}

public static int getScreenWidth() {
    return Resources.getSystem().getDisplayMetrics().widthPixels;
}

private void changeWindowSizes(int width, int height) {
    final Window window = getDialog().getWindow();
    if (window != null) {
        // hack to change window width
        window.setLayout(width, height);
    }
}

@Override
public void onDestroyView() {
    super.onDestroyView();
    mUnbinder.unbind();
}

@Override
public int getTheme() {
    return R.style.CustomDialog;
}

@Override
public void onDateSet(DatePickerDialog view, int year, int monthOfYear, int dayOfMonth) {
 String date = "You picked the following date: "+dayOfMonth+"/"+(monthOfYear+1)+"/"+year;
 dateTextView.setText(date);
}


}

NewWorkoutItemFragment 只需将这个dialog类的对象

newWorkDialog= new NewWorkoutItemFragment();
NewWorkoutItemFragment newWorkDialog;
newWorkDialog= NewWorkoutItemFragment.newInstance("T");
newWorkDialog.show(manager,"Show");

在样式文件中,只需添加以下行

<style name="CustomDialog" parent="Theme.AppCompat.Light.Dialog">
    <item name="android:windowAnimationStyle">@style/CustomDialogAnimation</item>
</style>

<style name="CustomDialogAnimation">
    <item name="android:windowEnterAnimation">@anim/translate_left_side</item>
    <item name="android:windowExitAnimation">@anim/translate_right_side</item>
</style>

res 说出它的名字 anim 并在中创建两个文件 动画 transition_left_side 和 transition_right_side

代码 转换\u左侧\u

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="600"
android:fromXDelta="100%"
android:toXDelta="0%"/>

和代码

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXDelta="0%" android:toXDelta="100%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="600"/>

我想这不会造成任何进一步的错误。

Ofek Pintok 7 年前

解决办法不是 datepickerdialog 完全。我的片段中有一个开关盒,用于管理点击事件。我不小心忘了放一个 break; 在导致其他事件(其中一个是 dismiss(); ),这就是为什么datepickerdialog也拒绝了我的片段。