Android Studio Alert Dialog Dont Show Again
Overview
DialogFragment is a specialized Fragment used when you desire to display an overlay modal window within an activity that floats on summit of the rest of the content.
This is typically used for displaying an alert dialog, a ostend dialog, or prompting the user for information within an overlay without having to switch to some other Activity.
DialogFragment is now the canonical fashion to display overlays; using Dialog directly is considered bad practice.
Usage
The minimum that must be implemented when creating a DialogFragment is either the onCreateView method or the onCreateDialog method. Employ onCreateView when the entire view of the dialog is going to exist defined via custom XML. Apply onCreateDialog when you but need to construct and configure a standard Dialog class (such as AlertDialog) to display.
Note: The unabridged guide below requires every fragment related class imported to utilise the androidx.fragment.app namespace and not the android.app namespace. If any imported course (FragmentManager, DialogFragment, etc) uses the android.app namespace, compile-fourth dimension errors will occur.
Custom View
Let's starting time by providing the code for creating a completely custom dialog based on an XML view. First, an example fragment XML file in res/layout/fragment_edit_name.xml:
<!-- fragment_edit_name.xml --> <LinearLayout xmlns:android= "http://schemas.android.com/apk/res/android" android:id= "@+id/edit_name" android:layout_width= "wrap_content" android:layout_height= "wrap_content" android:layout_gravity= "center" android:orientation= "vertical" > <TextView android:id= "@+id/lbl_your_name" android:text= "Your name" android:layout_width= "wrap_content" android:layout_height= "wrap_content" /> <EditText android:id= "@+id/txt_your_name" android:layout_width= "match_parent" android:layout_height= "wrap_content" android:inputType= "text" android:imeOptions= "actionDone" /> </LinearLayout> and defining the fragment itself extending from the support version of dialog fragment:
import androidx.fragment.app.DialogFragment ; // ... public class EditNameDialogFragment extends DialogFragment { private EditText mEditText ; public EditNameDialogFragment () { // Empty constructor is required for DialogFragment // Make sure not to add arguments to the constructor // Use `newInstance` instead equally shown below } public static EditNameDialogFragment newInstance ( String title ) { EditNameDialogFragment frag = new EditNameDialogFragment (); Parcel args = new Packet (); args . putString ( "title" , championship ); frag . setArguments ( args ); render frag ; } @Override public View onCreateView ( LayoutInflater inflater , ViewGroup container , Bundle savedInstanceState ) { return inflater . inflate ( R . layout . fragment_edit_name , container ); } @Override public void onViewCreated ( View view , @Nullable Parcel savedInstanceState ) { super . onViewCreated ( view , savedInstanceState ); // Get field from view mEditText = ( EditText ) view . findViewById ( R . id . txt_your_name ); // Fetch arguments from bundle and set title Cord championship = getArguments (). getString ( "title" , "Enter Proper name" ); getDialog (). setTitle ( title ); // Show soft keyboard automatically and request focus to field mEditText . requestFocus (); getDialog (). getWindow (). setSoftInputMode ( WindowManager . LayoutParams . SOFT_INPUT_STATE_VISIBLE ); } } and showing the dialog in an Activity extending AppCompatActivity:
// Note: `FragmentActivity` works hither likewise public class DialogDemoActivity extends AppCompatActivity { @Override public void onCreate ( Packet savedInstanceState ) { super . onCreate ( savedInstanceState ); setContentView ( R . layout . master ); showEditDialog (); } individual void showEditDialog () { FragmentManager fm = getSupportFragmentManager (); EditNameDialogFragment editNameDialogFragment = EditNameDialogFragment . newInstance ( "Some Title" ); editNameDialogFragment . prove ( fm , "fragment_edit_name" ); } } For this to piece of work properly brand sure that all the fragment related items (FragmentDialog) are from the androidx.fragment.app namespace.
Build Dialog
2d, let'due south take a look at how to build a dialog but by customizing the bachelor Dialog objects that we tin construct. For more than details about the unlike types of dialogs, cheque out the "Things to Annotation" section beneath.
class MyAlertDialogFragment extends DialogFragment { public MyAlertDialogFragment () { // Empty constructor required for DialogFragment } public static MyAlertDialogFragment newInstance ( String title ) { MyAlertDialogFragment frag = new MyAlertDialogFragment (); Bundle args = new Bundle (); args . putString ( "title" , title ); frag . setArguments ( args ); render frag ; } @Override public Dialog onCreateDialog ( Bundle savedInstanceState ) { String title = getArguments (). getString ( "title" ); AlertDialog . Builder alertDialogBuilder = new AlertDialog . Builder ( getActivity ()); alertDialogBuilder . setTitle ( championship ); alertDialogBuilder . setMessage ( "Are y'all certain?" ); alertDialogBuilder . setPositiveButton ( "OK" , new DialogInterface . OnClickListener () { @Override public void onClick ( DialogInterface dialog , int which ) { // on success } }); alertDialogBuilder . setNegativeButton ( "Cancel" , new DialogInterface . OnClickListener () { @Override public void onClick ( DialogInterface dialog , int which ) { if ( dialog != null && dialog . isShowing ()) { dialog . dismiss (); } } }); return alertDialogBuilder . create (); } } and to display the warning dialog in an activity extending AppCompatActivity:
public class DialogDemoActivity extends AppCompatActivity { @Override public void onCreate ( Packet savedInstanceState ) { super . onCreate ( savedInstanceState ); setContentView ( R . layout . primary ); showAlertDialog (); } private void showAlertDialog () { FragmentManager fm = getSupportFragmentManager (); MyAlertDialogFragment alertDialog = MyAlertDialogFragment . newInstance ( "Some championship" ); alertDialog . show ( fm , "fragment_alert" ); } } Passing Information to Activeness
To pass information from a dialog to an Activeness, use the same arroyo you would employ for whatsoever fragment which is creating a custom listener. In brusk, you lot will demand to do the following:
- Define an interface with methods that tin can be invoked to pass information result to the activity
- Setup a view event which invokes the custom listener passing information through the method
- Implement the interface in the Activity defining beliefs for when the result is triggered
This example below demonstrates how to pass a data result back to the action when the "Done" push button is pressed on the keyboard but this works similarly for other cases or for the AlertDialog (simply utilize the listeners divers for each of the buttons):
public class EditNameDialogFragment extends DialogFragment implements OnEditorActionListener { private EditText mEditText ; // ane. Defines the listener interface with a method passing dorsum data result. public interface EditNameDialogListener { void onFinishEditDialog ( String inputText ); } // ... @Override public void onViewCreated ( View view , @Nullable Parcel savedInstanceState ) { // ... // two. Setup a callback when the "Washed" button is pressed on keyboard mEditText . setOnEditorActionListener ( this ); } // Fires whenever the textfield has an activeness performed // In this case, when the "Done" button is pressed // REQUIRES a 'soft keyboard' (virtual keyboard) @Override public boolean onEditorAction ( TextView v , int actionId , KeyEvent event ) { if ( EditorInfo . IME_ACTION_DONE == actionId ) { // Return input text back to activity through the implemented listener EditNameDialogListener listener = ( EditNameDialogListener ) getActivity (); listener . onFinishEditDialog ( mEditText . getText (). toString ()); // Shut the dialog and render back to the parent action dismiss (); return true ; } return simulated ; } } and have the activity define the action to take when the dialog has the information:
public class DialogDemoActivity extends AppCompatActivity implements EditNameDialogListener { // ... // 3. This method is invoked in the activeness when the listener is triggered // Access the data result passed to the action here @Override public void onFinishEditDialog ( String inputText ) { Toast . makeText ( this , "Hi, " + inputText , Toast . LENGTH_SHORT ). show (); } } Note: setOnEditorActionListener used above to dismiss requires the employ of the soft keyboard in the emulator which tin exist enabled through AVD or past testing on a device. If you don't desire to enable soft keyboard, you lot may desire to dismiss on a button click or on a keypress instead.
Passing Data to Parent Fragment
In certain situations, the a dialog fragment may be invoked within the context of another fragment. For example, a screen has tabs with a form contained in a fragment. The form has an input for selecting dates using a date picker in a dialog. In this instance, we may want to pass the date back not to the activity just instead to the parent fragment. This data can be passed back straight to the parent fragment:
import androidx.fragment.app.DialogFragment ; public course EditNameDialogFragment extends DialogFragment { // Defines the listener interface public interface EditNameDialogListener { void onFinishEditDialog ( Cord inputText ); } // Call this method to send the data back to the parent fragment public void sendBackResult () { // Notice the apply of `getTargetFragment` which volition exist ready when the dialog is displayed EditNameDialogListener listener = ( EditNameDialogListener ) getTargetFragment (); listener . onFinishEditDialog ( mEditText . getText (). toString ()); dismiss (); } } And and so the dialog must be displayed within a parent fragment passing the target via setTargetFragment with:
import androidx.fragment.app.Fragment ; public class MyParentFragment extends Fragment implements EditNameDialogListener { // Phone call this method to launch the edit dialog private void showEditDialog () { FragmentManager fm = getFragmentManager (); EditNameDialogFragment editNameDialogFragment = EditNameDialog . newInstance ( "Some Championship" ); // SETS the target fragment for use later when sending results editNameDialogFragment . setTargetFragment ( MyParentFragment . this , 300 ); editNameDialogFragment . show ( fm , "fragment_edit_name" ); } // This is called when the dialog is completed and the results accept been passed @Override public void onFinishEditDialog ( String inputText ) { Toast . makeText ( this , "How-do-you-do, " + inputText , Toast . LENGTH_SHORT ). show (); } } Troubleshooting
If you are having any issues, be sure to use the checklist below:
- In parent fragment, earlier calling
dialogFragment.show(), are you callingsetTargetFragmentand passing in the correct fragment as the target? - In the dialog fragment, before calling
dismiss(), are you callinglistener.someCallbackMethod()on a listener casted from thegetTargetFragment()passed in above? - Have you correctly implemented the interface and callback method fired i.e
listener.someCallbackMethod()inside of the parent fragment? - Try breakpointing each of those lines to make sure the target fragment is fix property and the callback method is being executed.
With that, the two fragments are able to pass information back and forth.
Styling Dialogs
Styling Custom Dialog
Styling a DialogFragment with a custom layout works only the same every bit styling whatever views. Styling a dialog or AlertDialog requires irresolute several key properties in styles.xml such equally the dialogTheme and alertDialogTheme every bit shown in this app here and shown beneath in res/values/styles.xml:
<!-- In res/values/colors.xml --> <colour proper noun= "dark_blue" >#180065</color> <color name= "light_blue" >#334ee9ff</color> <colour name= "medium_green" >#3d853e</color> <color proper noun= "light_green" >#3c2ae668</color> <!-- In res/values/styles.xml --> <fashion name= "AppTheme" parent= "Theme.AppCompat.Light" > <!-- Apply default style for dialogs --> <item name= "android:dialogTheme" >@fashion/AppDialogTheme</item> <!-- Apply default style for warning dialogs --> <item proper name= "android:alertDialogTheme" >@style/AppAlertTheme</item> </way> <!-- Define your custom dialog theme here extending from base of operations --> <style name= "AppDialogTheme" parent= "Theme.AppCompat.Light.Dialog" > <!-- Define color backdrop equally desired --> <item name= "colorPrimary" >@color/dark_blue</detail> <item name= "colorPrimaryDark" >#000</item> <item name= "android:textColorHighlight" >@color/light_blue</item> <particular name= "colorAccent" >@color/dark_blue</particular> <item proper noun= "colorControlNormal" >@color/dark_blue</item> <!-- Ascertain window properties as desired --> <item proper noun= "android:windowNoTitle" >fake</item> <item proper noun= "android:windowFullscreen" >fake</detail> <detail name= "android:windowBackground" >@colour/medium_green</item> <item name= "android:windowIsFloating" >truthful</detail> <item name= "android:windowCloseOnTouchOutside" >true</item> </mode> <!-- Define your custom warning theme hither extending from base --> <style name= "AppAlertTheme" parent= "Theme.AppCompat.Light.Dialog.Alert" > <particular proper noun= "colorPrimary" >@color/dark_blue</item> <item proper noun= "colorAccent" >@color/dark_blue</item> <detail name= "colorPrimaryDark" >#000</particular> <particular name= "colorControlNormal" >@color/dark_blue</item> <particular proper noun= "android:textColorHighlight" >@color/light_blue</item> </style> Dialog Styling Workaround
Note: There is currently a bug in the back up library that causes styles not to prove up properly. Irresolute the DialogFragment in the onCreateView to utilize the activity's inflater seems to resolve the issue:
@Override public View onCreateView ( LayoutInflater inflater , ViewGroup container , Bundle savedInstanceState ) { return getActivity (). getLayoutInflater (). inflate ( R . layout . fragment_edit_name , container ); } All dialog widgets should at present be properly themed. Check out this stackoverflow post for details.
Styling Titlebar of Dialog
The titlebar can exist styled using the "android:windowTitleStyle" as follows:
<manner name= "AppTheme" parent= "Theme.AppCompat.Light" > <!-- Apply default fashion for dialogs --> <particular name= "android:dialogTheme" >@style/AppDialogTheme</item> <!-- Apply default manner for alert dialogs --> <item name= "android:alertDialogTheme" >@style/AppAlertTheme</item> </manner> <style name= "AppDialogTheme" parent= "Theme.AppCompat.Calorie-free.Dialog" > <item name= "android:windowTitleStyle" >@style/DialogWindowTitle</particular> <!-- ...other stuff here... --> </style> <fashion proper name= "AppAlertTheme" parent= "Theme.AppCompat.Light.Dialog.Alert" > <item name= "android:windowTitleStyle" >@style/DialogWindowTitle</item> <!-- ...other stuff hither... --> </way> <manner name= "DialogWindowTitle" parent= "Base.DialogWindowTitle.AppCompat" > <item name= "android:background" >@color/light_green</item> <item proper name= "android:gravity" >eye</item> <item proper noun= "android:textAppearance" >@mode/DialogWindowTitleText</item> </style> <style proper noun= "DialogWindowTitleText" parent= "@android:style/TextAppearance.DialogWindowTitle" > <item name= "android:textSize" >24sp</item> </way> Removing the TitleBar from the Dialog
The TitleBar can be easily removed from your DialogFragment by overriding the onCreateDialog method:
@Override public Dialog onCreateDialog ( Package savedInstanceState ) { Dialog dialog = super . onCreateDialog ( savedInstanceState ); // request a window without the title dialog . getWindow (). requestFeature ( Window . FEATURE_NO_TITLE ); render dialog ; } This will give y'all a dialog box without a title bar. Read more than in this StackOverflow post
Transparent Dialogs
We can make the dialog (or the championship of the dialog) translucent using the android:windowBackground holding:
<style proper noun= "AppDialogTheme" parent= "Theme.AppCompat.Light.Dialog" > <item name= "android:windowIsTranslucent" >true</item> <item name= "android:windowBackground" >@android:color/transparent</detail> <!-- ...other stuff here... --> </style> Note that this removes the default background image from the dialog @drawable/abc_dialog_material_background_light and as a event the shadow and border is removed.
To complete the transparent effect, make sure to prepare the alpha channel of the background colors as outlined here to make whatever background colors semi-transparent.
Styling with Tertiary-Party Libraries
Annotation that third party material libraries such every bit textile-dialogs can exist used to simplify and improve dialog styling as well.
In club to use the "cloth-dialogs" library, you volition need to add in maven repository to your build.gradle file. Your gradle file should look something similar this.
Sizing Dialogs
Runtime Dimensions
In sure situations, you may want to explicitly set the height and width of the DialogFragment at runtime during creation. This can be done easily with getDialog().getWindow() as follows. In the XML simply prepare the root layout to wrap_content with:
<!-- fragment_edit_name.xml --> <LinearLayout xmlns:android= "http://schemas.android.com/apk/res/android" android:id= "@+id/edit_name" android:layout_width= "wrap_content" android:layout_height= "wrap_content" > <!-- ...subviews here... --> </LinearLayout> In the DialogFragment coffee source we can set the width and superlative onResume with:
public void onResume () { int width = getResources (). getDimensionPixelSize ( R . dimen . popup_width ); int height = getResources (). getDimensionPixelSize ( R . dimen . popup_height ); getDialog (). getWindow (). setLayout ( width , height ); // Call super onResume after sizing super . onResume (); } See this stackoverflow post for more than information. Using this approach we could set up the dialog's width equally a pct of the screen within the DialogFragment with:
public void onResume () { // Store access variables for window and blank point Window window = getDialog (). getWindow (); Indicate size = new Point (); // Store dimensions of the screen in `size` Display display = window . getWindowManager (). getDefaultDisplay (); display . getSize ( size ); // Set the width of the dialog proportional to 75% of the screen width window . setLayout (( int ) ( size . x * 0.75 ), WindowManager . LayoutParams . WRAP_CONTENT ); window . setGravity ( Gravity . Centre ); // Telephone call super onResume after sizing super . onResume (); } Meet this stackoverflow mail for the source reference.
Sizing Adjustments for Soft Keyboard
When displaying a dialog that is accepting text input, there can often be express space on screen because the soft keyboard on screen eats upwardly a lot of room. To business relationship for this, you may want to modify the android:windowSoftInputMode property for the activity inside the AndroidManifest.xml file:
<!-- Configures the UI to be resized to brand room for the keyboard --> <activity android:name= "com.example.myactivity" android:windowSoftInputMode= "adjustResize" /> Meet the full details in the working with the soft keyboard guide. Alternatively, we could perform the resize directly at runtime within the onCreateView method of the fragment:
public class EditNameDialog extends DialogFragment { // ... @Override public View onCreateView ( LayoutInflater inflater , ViewGroup parent , Bundle package ) { // Set to conform screen summit automatically, when soft keyboard appears on screen getDialog (). getWindow (). setSoftInputMode ( WindowManager . LayoutParams . SOFT_INPUT_ADJUST_RESIZE ); return inflater . inflate ( R . layout . fragment_edit_name , container ); } } Come across this stackoverflow post for boosted details. Keep in mind that for either of these to work, the layout of the dialog must be configured to resize properly as the height changes.
Total-Screen Dialog
In other cases, we want the dialog to fill the unabridged screen. Commencement, in the XML layout for the dialog simply set the root layout to match_parent with:
<!-- fragment_edit_name.xml --> <LinearLayout xmlns:android= "http://schemas.android.com/apk/res/android" android:id= "@+id/edit_name" android:layout_width= "match_parent" android:layout_height= "match_parent" > <!-- ...subviews hither... --> </LinearLayout> Next, within the onResume method of the DialogFragment nosotros demand to set the rules on the getDialog().getWindow() object to WindowManager.LayoutParams.MATCH_PARENT with:
@Override public void onResume () { // Become existing layout params for the window ViewGroup . LayoutParams params = getDialog (). getWindow (). getAttributes (); // Assign window properties to make full the parent params . width = WindowManager . LayoutParams . MATCH_PARENT ; params . height = WindowManager . LayoutParams . MATCH_PARENT ; getDialog (). getWindow (). setAttributes (( android . view . WindowManager . LayoutParams ) params ); // Call super onResume after sizing super . onResume (); } With this lawmaking higher up, the dialog may even so not appear to be entirely full-screen until we configure the background color and padding inside res/values/styles.xml with the post-obit:
<style name= "Dialog.FullScreen" parent= "Theme.AppCompat.Dialog" > <item proper noun= "android:padding" >0dp</item> <item proper noun= "android:windowBackground" >@android:color/white</item> </way> and and then this fashion tin can be practical when creating the fragment with:
EditNameDialogFragment editNameDialogFragment = new EditNameDialogFragment (); editNameDialogFragment . setStyle ( DialogFragment . STYLE_NORMAL , R . style . Dialog_FullScreen ); editNameDialogFragment . evidence ( getSupportFragmentManager (), "fragment_edit_name" ); See this stackoverflow post for more than details. Refer to this post for the customized dialog styles.
Specialized Dialog Types
When using the onCreateDialog method there are many congenital-in Dialog types to take advantage of:
- AlertDialog - Base dialog that can display a message, an icon and 1-iii buttons with customized text.
- ProgressDialog - Dialog showing a progress indicator and an optional text message
- TimePickerDialog - Dialog that allows a user to select a time.
- DatePickerDialog - Dialog that allows a user to select a appointment.
- BottomSheetDialog - Dialog that slides from the bottom.
- Other dialogs non worth discussing here: 1 2
Displaying a ProgressDialog
When running a long running groundwork task, one easy style to notify users the app is loading is to brandish a ProgressDialog.
A ProgressDialog can exist created someday with the post-obit:
ProgressDialog pd = new ProgressDialog ( context ); pd . setTitle ( "Loading..." ); pd . setMessage ( "Please expect." ); pd . setCancelable ( faux ); The dialog tin can be displayed with:
pd . show (); and subconscious anytime with:
pd . dismiss (); ProgressDialog can be safely paired with an AsyncTask. Refer to this ProgressDialog tutorial for a code sample. The dialog progress animation tin exist customized by supplying your own animation drawable using this tutorial.
Check out the CodePath android-view-helpers library for an easier mode to create simple alert and progress modals.
Displaying Date or Time Picker Dialogs
The native date and time pickers for Android are another case of specialized dialog fragments. Please note that the date/time pickers that comes with the Android SDK differ depending on the Android device version. See this section for more than information.
If you wish for the containing action to receive the date or time selected past the dialog, you should ensure that the Activeness implements the respective interface. If we want the date picker to be shown from within another dialog fragment, refer to setting a target fragment. For instance, for a engagement picker fragment, you volition want to ensure that the activity implements the OnDateSetListener interface:
import java.util.Calendar ; // do non import java.icu.utils.Calendar public class DatePickerFragment extends DialogFragment { @Override public Dialog onCreateDialog ( Bundle savedInstanceState ) { // Use the current fourth dimension as the default values for the picker final Agenda c = Calendar . getInstance (); int year = c . become ( Calendar . Twelvemonth ); int month = c . become ( Calendar . Calendar month ); int day = c . get ( Calendar . DAY_OF_MONTH ); // Action needs to implement this interface DatePickerDialog . OnDateSetListener listener = ( DatePickerDialog . OnDateSetListener ) getActivity (); // Create a new instance of TimePickerDialog and render information technology return new DatePickerDialog ( getActivity (), listener , year , month , day ); } The Activeness, which also is responsible for instantiating this dialog fragment, but needs to implement the onDateSet method of this interface.
public class MyActivity extends AppCompatActivity implements DatePickerDialog . OnDateSetListener { // attach to an onclick handler to show the date picker public void showDatePickerDialog ( View five ) { DatePickerFragment newFragment = new DatePickerFragment (); newFragment . show ( getSupportFragmentManager (), "datePicker" ); } // handle the date selected @Override public void onDateSet ( DatePicker view , int year , int monthOfYear , int dayOfMonth ) { // shop the values selected into a Calendar instance final Agenda c = Agenda . getInstance (); c . set ( Calendar . Twelvemonth , year ); c . set ( Calendar . MONTH , monthOfYear ); c . fix ( Calendar . DAY_OF_MONTH , dayOfMonth ); } A similar arroyo can be done with the time picker too:
public class TimePickerFragment extends DialogFragment { @Override public Dialog onCreateDialog ( Bundle savedInstanceState ) { // Use the current time every bit the default values for the picker terminal Calendar c = Calendar . getInstance (); int hour = c . go ( Calendar . HOUR_OF_DAY ); int minute = c . go ( Calendar . MINUTE ); // Activity has to implement this interface TimePickerDialog . OnTimeSetListener listener = ( TimePickerDialog . OnTimeSetListener ) getActivity (); // Create a new instance of TimePickerDialog and render it render new TimePickerDialog ( getActivity (), listener , hour , minute , DateFormat . is24HourFormat ( getActivity ())); } public void onTimeSet ( TimePicker view , int hourOfDay , int minute ) { // Do something with the time chosen by the user } } Modal Bottom Sheets
With the support design library, information technology also adequately easy to convert your dialog to employ modal lesser sheets. Instead of DialogFragment, you can extend from BottomSheetDialogFragment:
public class MyBottomSheetDialogFragment extends BottomSheetDialogFragment { @Override public View onCreateView ( LayoutInflater inflater , ViewGroup container , Packet savedInstanceState ) { return inflater . inflate ( R . layout . fragment_bottom_sheet , container ); } } When you bear witness this fragment, yous will find that it appears from the lesser:
MyBottomSheetDialogFragment myDialog = new MyBottomSheetDialogFragment (); FragmentManager fm = getSupportFragmentManager (); myDialog . show ( fm , "examination" ); Things To Note
- Notice that we are using the support library version of fragments for better compatibility in our code samples. The non-support version works identically.
- Dialogs are just classes that extend
DialogFragmentand define the view to display in the floating content area. -
DialogFragmentclasses must define an empty constructor as shown in the code samples, otherwise the Android organisation volition raise an exception when it attempts to instantiate the fragment. - After loading the initial view, the activity immediately shows the dialog using the show() method which allows the fragment manager to go on track of the land and gives u.s. certain things for free such as the back button dismissing the fragment.
- In the code snippets above, discover the utilise of
requestFocusand input modes to command the appearance of the soft keyboard when the dialog appears. - We can dismiss a dialog one of two ways. Here we are calling
dismiss()within the Dialog class itself. It could as well be called from the Activity similar theshow()method. In API 13,removeDialog(int id)anddismissDialog(int id)were deprecated.dismiss()straight on the dialog is now the recommended approach as outlined here.
References
- http://android-developers.blogspot.com/2012/05/using-dialogfragments.html
- http://codebaum.wordpress.com/2013/04/x/dialog-fragments/
- http://developer.android.com/reference/android/app/DialogFragment.html
- http://www.coderzheaven.com/2013/02/fourteen/dialogfragments-android-simple-example/
- http://stackoverflow.com/questions/12912181/simplest-aye-no-dialog-fragment
Source: https://guides.codepath.com/android/using-dialogfragment
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