如何在单独的Java文件中创建警报对话框？
我要创建一个如下所示的警报对话框：
我可以使用以下代码以编程方式创建警报对话框：
private fun openDataEntryDialog(title: String, description: String) {
val mBuilder = AlertDialog.Builder(mContext)
val mView = layoutInflater.inflate(R.layout.dialog_entry_data,null)
mBuilder.setView(mView)
val dataEntryDialog = mBuilder.create()
val titleTextView : TextView = mView.findViewById(R.id.textView_title_data_entry_dialog)
val descriptionTextView : TextView = mView.findViewById(R.id.textView_description_data_entry_dialog)
val cancelTextView : TextView = mView.findViewById(R.id.textView_cancel_action_entry_data_dialog)
val changeTextView : TextView = mView.findViewById(R.id.textView_change_action_entry_data_dialog)
titleTextView.text = title
descriptionTextView.text = description
cancelTextView.setOnClickListener {
dataEntryDialog.dismiss()
}
changeTextView.setOnClickListener {
dataEntryDialog.dismiss()
}
dataEntryDialog.show()
}
但是我实际上想创建一个处理警报对话框的类，就像在制作模态底部工作表时一样，从该类中，我将使用interface（listener）带来数据
下面的代码是制作模态底板时的单独类
class UserControlModalBottomSheet : BottomSheetDialogFragment() {
lateinit var mListener : UserControlModalBottomSheetListener
fun setListener(listener: UserControlModalBottomSheetListener) {
mListener = listener
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val view = inflater.inflate(R.layout.modal_bottom_sheet_user_control, container, false)
val helpUsTextView : TextView = view.findViewById(R.id.textView_help_us_user_control_modal_bottom_sheet)
val settingsTextView : TextView = view.findViewById(R.id.textView_setting_user_control_modal_bottom_sheet)
val editProfileTextView : TextView = view.findViewById(R.id.textView_edit_profile_user_control_modal_bottom_sheet)
helpUsTextView.setOnClickListener {
mListener.onHelpUsSectionClicked()
dismiss()
}
editProfileTextView.setOnClickListener {
mListener.onEditProfileSectionClicked()
dismiss()
}
settingsTextView.setOnClickListener {
mListener.onSettingSectionClicked()
dismiss()
}
return view
}
}
然后在片段中，我可以像下面这样使用该类：
private fun openBottomSheetDialog() {
val fragManager = fragmentManager ?: return
val bottomSheet = UserControlModalBottomSheet()
bottomSheet.setListener(object:
UserControlModalBottomSheetListener {
override fun onHelpUsSectionClicked() {
val helpUsDestination = UserControlFragmentDirections.actionToHelpUs()
Navigation.findNavController(fragmentView).navigate(helpUsDestination)
}
override fun onEditProfileSectionClicked() {
val editProfileDestination = UserControlFragmentDirections.actionToEditProfile()
Navigation.findNavController(fragmentView).navigate(editProfileDestination)
}
override fun onSettingSectionClicked() {
val settingsDestination = UserControlFragmentDirections.actionToSettings()
Navigation.findNavController(fragmentView).navigate(settingsDestination)
}
})
bottomSheet.show(fragManager,"UserControlFragment")
}
那么如何像上面的代码一样在单独的Java文件中创建自定义警报对话框？我是Android新手，似乎所有教程都没有在单独的Java文件中创建
这是对话框的xml：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorBackgroundDark">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content" android:id="@+id/textView_title_data_entry_dialog"
tools:text="Title Data Entry"
android:textColor="@android:color/black"
app:layout_constraintEnd_toEndOf="parent" android:layout_marginEnd="8dp"
app:layout_constraintStart_toStartOf="parent" android:layout_marginStart="8dp"
android:layout_marginTop="16dp" app:layout_constraintTop_toTopOf="parent" android:textAlignment="center"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content" android:id="@+id/textView_description_data_entry_dialog"
android:textColor="@android:color/black"
android:layout_marginTop="16dp"
app:layout_constraintTop_toBottomOf="@+id/textView_title_data_entry_dialog"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginStart="32dp" app:layout_constraintEnd_toEndOf="parent"
android:layout_marginEnd="32dp" android:maxLines="2" tools:text="This is the description of data entry."
app:layout_constraintHorizontal_bias="0.495" android:textAlignment="center"/>
<EditText
android:layout_width="0dp"
android:layout_height="35dp"
android:background="@drawable/rectangle_outline"
android:inputType="textPersonName"
android:maxLines="1"
android:ems="10"
android:id="@+id/editText_input_data_dialog_entry_data" android:layout_marginStart="32dp"
app:layout_constraintStart_toStartOf="parent" android:layout_marginEnd="32dp"
app:layout_constraintEnd_toEndOf="parent" android:layout_marginTop="16dp"
app:layout_constraintTop_toBottomOf="@+id/textView_description_data_entry_dialog"
android:paddingStart="8dp" android:paddingEnd="8dp"/>
<View
android:layout_width="0dp"
android:layout_height="1dp"
android:id="@+id/view_horizontal_entry_data_dialog"
android:background="@color/colorLine"
android:layout_marginTop="16dp"
app:layout_constraintTop_toBottomOf="@+id/editText_input_data_dialog_entry_data"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"/>
<TextView
android:text="Batal"
android:layout_width="0dp"
android:layout_height="35dp"
app:layout_constraintWidth_percent="0.5"
android:id="@+id/textView_cancel_action_entry_data_dialog"
android:gravity="center"
android:textAlignment="center"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toBottomOf="@+id/editText_input_data_dialog_entry_data"
android:layout_marginTop="16dp"/>
<TextView
android:text="Ubah"
android:layout_width="0dp"
android:layout_height="35dp"
app:layout_constraintWidth_percent="0.5"
android:id="@+id/textView_change_action_entry_data_dialog"
android:gravity="center"
android:textAlignment="center"
app:layout_constraintStart_toEndOf="@+id/textView_cancel_action_entry_data_dialog"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toBottomOf="@+id/editText_input_data_dialog_entry_data"
android:layout_marginTop="16dp"/>
<View
android:layout_width="1dp"
android:layout_height="49dp"
android:id="@+id/view_vertical_entry_data_dialog"
android:background="@color/colorLine"
app:layout_constraintEnd_toStartOf="@+id/textView_change_action_entry_data_dialog"
app:layout_constraintStart_toEndOf="@+id/textView_cancel_action_entry_data_dialog"
app:layout_constraintTop_toBottomOf="@+id/view_horizontal_entry_data_dialog"
app:layout_constraintBottom_toBottomOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
java没问题
1 个答案:
答案 0 :(得分：0)
您可以使用DialogFragment
在您单击按钮时的类或片段中：
someBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
FragmentTransaction ft = getFragmentManager().beginTransaction();
Fragment prev = getFragmentManager().findFragmentByTag("dialog");
if (prev != null) {
ft.remove(prev);
}
ft.addToBackStack(null);
DialogFragment dialogFragment = new OpportunityDialogFragment();
Bundle bundle = new Bundle();
bundle.putSerializable(Constants.visitObject,visit);
dialogFragment.setArguments(bundle);
dialogFragment.show(ft, "dialog");
}
});
创建一个对话框片段类，以扩展自定义布局：
public class OpportunityDialogFragment extends DialogFragment implements View.OnClickListener {
private VisitsAdded visitsAdded;
Button convertToOppBtn, editVisitBtn;
TextView companyName, location,visitSubject;
ImageView closeDialogImage;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.dialog_fragment_opportunity, container, false);
// Do all the stuff to initialize your custom view
return v;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
//retrieving data from fragment/activity
Bundle bundle = getArguments();
visitsAdded = (VisitsAdded) bundle.getSerializable(Constants.visitObject);
// Do whatever you want here
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_convert_to_opportunity:
if (getActivity() != null) {
Intent i = new Intent(getActivity(), AddEditOpportunityActivity.class);
i.putExtra(Constants.visitObject,visitsAdded);
getActivity().startActivity(i);
OpportunityDialogFragment.this.dismiss();//dismisses the dialog
}
break;
case R.id.close_opportunity_pop_up:
OpportunityDialogFragment.this.dismiss();
break;
}
}
}
dialog_fragment_opportunity.xml（有点类似于您的要求）：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minWidth="1000dp"
android:minHeight="100dp"
android:orientation="vertical">
<ImageView
android:id="@+id/close_opportunity_pop_up"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:padding="6dp"
android:src="@drawable/ic_close_grey_500_24dp" />
<TextView
android:id="@+id/popup_visit_subject"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:gravity="center"
android:paddingStart="16dp"
android:paddingLeft="16dp"
android:paddingEnd="16dp"
android:paddingRight="16dp"
android:text="Jal El dib, Lebanon"
android:textColor="@color/grey_700" />
<TextView
android:id="@+id/popup_visit_customer_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:paddingStart="16dp"
android:paddingLeft="16dp"
android:paddingEnd="16dp"
android:paddingRight="16dp"
android:layout_marginTop="8dp"
android:text="STE. JEAN CLAUDE YARED "
android:textColor="@color/colorPrimary" />
<TextView
android:id="@+id/popup_visit_location_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="8dp"
android:gravity="center"
android:paddingStart="16dp"
android:paddingLeft="16dp"
android:paddingEnd="16dp"
android:paddingRight="16dp"
android:text="Jal El dib, Lebanon"
android:textColor="@color/grey_700" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="36dp"
android:layout_marginStart="12dp"
android:layout_marginTop="64dp"
android:layout_marginEnd="12dp"
android:layout_marginBottom="16dp"
android:orientation="horizontal"
android:weightSum="1">
<Button
android:id="@+id/btn_convert_to_opportunity"
android:layout_width="0dp"
android:layout_height="32dp"
android:layout_marginEnd="6dp"
android:layout_weight="0.5"
android:background="@drawable/curved_rectangle_red"
android:maxLines="1"
android:paddingStart="4dp"
android:paddingEnd="4dp"
android:text="@string/convert_to_opportunity"
android:textAllCaps="false"
android:textColor="@color/white"
android:textSize="11sp" />
<Button
android:id="@+id/popup_btn_edit_visit"
android:layout_width="0dp"
android:layout_height="32dp"
android:layout_marginStart="12dp"
android:layout_weight="0.5"
android:background="@drawable/curved_rectangle_red"
android:text="@string/edit_visit"
android:textAllCaps="false"
android:textColor="@color/white"
android:textSize="11sp" />
</LinearLayout>
希望这对您有帮助！
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