Create popup window android

How to create a Popup Window in Android using Kotlin

Today, I’m going to show you how to create very easy a nice popup window with a semi-transparent background!

In this example I’m using CardView to have rounded corners in the popup window. If you don’t like it, and you want to use something else (RelativeLayout, FrameLayout e.t.c), just skip the next step.

Adding the CardView library

If you like your popup window to have rounded corners, add the cardView library to your build.gradle of your app module

Creating the Popup Window Activity

Create a new Empty Activity in your project. In this example, we call it PopUpWindow

Go to the xml layout and paste the following code:

Go to your activity file (PopUpWindow.kt) and disable Activity’s open/close animation by giving the number 0 on the overridePendingTransition before the setContentView

Use Bundle to get the data we’ll pass later on when we call the popup window from the MainActivity

Set the data to the TextViews and Button

Make the status bar appearance transparent at different API levels

Create a fade animation for the popup window background when the Activity starts

Create the fade animation for the popup window too

Close the popup window with fade animation when you press the ‘OK’ button or the back button on your device.

Using the Popup Window

To use the popup window, just pass the values for the Title, Text, Button text and Status Bar appearance.

In this example, when you press the button in the MainActivity, it shows the popup window with title ‘Error’ and text ‘Sorry, that email address is already used!’

If you have any questions, please feel free to leave a comment below

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Tek Eye

The main screen for an Activity is not the only way to interact with the user of an app. A brief message or dialog can be displayed in appropriate circumstances to ask a specific question, get specific input, or show a brief message. Android has build in support for such small focused interactions that require immediate attention.

(This Android pop-up tutorial assumes that Android Studio is installed, a basic App can be created and run, and the code in this article can be correctly copied into Android Studio. The example can be changed to meet other requirements. When entering code in Studio add import statements when prompted by pressing Alt-Enter.)

How to Display A Smaller Window on Top of an Activity

There are different ways in Android to pop-up a brief window over the current Activity screen, these include:

• The Toast class – to display brief informational only message.
• The Dialog class, managed by a DialogFragment – to support a flexible input that can display information and can ask for inputs or choices. There are several built in sub-classes including:
  • AlertDialog – supports buttons (from zero to three), list selections, check boxes and radio buttons (see the article About Box in Android App Using AlertBuilder).
  • ProgressDialog – supports a progress bar or wheel and supports buttons because it extends AlertDialog.
  • DatePickerDialog – supports selecting a date.
  • TimePickerDialog – supports a time selection.
• The PopupWindow class – allows a View to float on top of an existing activity. Suitable for custom informational messages.

These classes build their user interfaces through class methods with support from custom layouts when required. For this article the PopupWindow class is used. This Android pop-up tutorial includes example code. What is the PopupWindow? The Android developer PopupWindow documention gives this class overview:

«This class represents a popup window that can be used to display an arbitrary view. The popup window is a floating container that appears on top of the current activity.»

It can be used to display extra information without needing to code another Activity. An example would be to show results at the end of a game (or end of a level), which will be done in this tutorial. The steps for this example project and code are:

• Create a new project in Android Studio.
• Design the pop-up window.
• Add the code to load and populate the pop-up window.
• Call the code.

Design the Layout for the Pop-Up

For this example a pop-up is going to display a game’s result as gold, silver and bronze medal positions. The pop-up will have a graphic, shown in a ImageView , for each of the medals; a TextView for the winner’s name, and one for the score. The images for the medals came from the Open Clip Art Library by user momoko. They have been resized for the Android project and are available in medals_png.zip. Ready to download and add into the app project.

Start a new app project in Android Studio. Here it was called Pop-up and uses an Empty Activity with all other settings left at their default values. The pop-up window will be defined in a new layout XML file in the project’s layout folder, called winners.xml. To add some interest to the pop-up screen it will have a blue background and rounded corners, this is done using a shape drawable (see Add a Border to an Android Layout). The shape drawable for the custom background definition is a drawable resource XML file in the folder res/drawable. With the app or res folder highlighted in the Project explorer use the File or context (often called right-click) menu. Select the New then Android resource file option. Call the new resource customborder.xml:

Add this code for the pop-up window background shape definition. The android:shape is a rectangle:

Add the images for the medals to the project’s res/drawable folders (see medals_png.zip). Now create the winners.xml layout file, again use the New menu and select XML then Layout XML File. A RelativeLayout is used for the Root Tag. Open the file, add the ImageViews for the medals and TextViews for winners names and scores. Here is the code used for the layout used in this example:

Code to Load a Pop-up Window

The code to display the pop-up window will be wrapped in a function called showWinners(). It can be called from a button press or other action. The first code in the function inflates the pop-up window layout using a LayoutInflater :

The inflated layout is used to get the id of the TextViews. The ids are used to set the names of the winners and their scores, e.g. here we assume that the name of the gold medal winner is stored in the string goldWinner:

The pop-up window is created by passing in the layout and required size. We defined a size in the XML which is used here, scaled by the screens density to support different devices:

The button on the pop-up is given an OnClickListener so that the pop-up can be closed (if not familiar with coding event handlers see the article Different Ways to Code Android Event Listeners).

A touch event outside of the pop-up will also close it. The trick here is to call setBackgroundDrawable with a transparent drawable. This allows for screen presses outside of the pop-up to also close the pop-up:

Finally display the pop-up:

Calling the Pop-up Function

The following listing is for a simple Activity with a button that has an OnCLickListener to call the showWinners() function that is described above. The names of the medal winners and there scores are simple variables, in a real app game they would come from the game results. This is the complete code for the example in action shown at the beginning of the article:

Bookmark this page in your browser so that you can use the code as a template for future projects that require a pop-up.

See Also

• Download the project code for this pop-up example, available in android-pop-up.zip ready for importing into Android Studio
• For more android example projects see the Android Example Projects page.
• The medal images are also available via the Free Launcher Icons, Menu Icons and Android Graphics page.
• View the Tek Eye full Index for other articles.

Author: Daniel S. Fowler Published: 2013-02-05 Updated: 2017-07-23

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Android Popup Window Animation Example

The android.widget.PopupWindow class is another class that provides a popup window function besides AlertDialog. There is something different between them. This example will show you how to use the android.widget.PopupWindow in the android application.

1. PopupWindow And AlertDialog Difference.

1. The main difference between AlertDialog and PopupWindow is the location of the display. The AlertDialog is fixed display on the screen, while PopupWindow can be displayed anywhere on the main screen.
2. PopupWindow is a pop-up control that can be used to display any View and float at the top of the activity.
3. Through PopupWindow we can achieve a variety of pop-up window effects such as information display or UI interaction.
4. The PopupWindow custom layout is more convenient, and the display position is freedom there is no restriction.

2. PopupWindow Methods.

2.1 PopupWindow Constructor Method.

1. public PopupWindow (Context context).
2. public PopupWindow(View contentView) .
3. public PopupWindow(View contentView, int width, int height) .
4. public PopupWindow(View contentView, int width, int height, boolean focusable)
5. Please Note: There are four constructors, but the basic three parameters for generating a PopupWindow must be set are: View contentView, int width, int height; You can’t pop a PopupWindow without any one of them!
6. So, if you use the first constructor, the complete construct code should look like this.

2.2 PopupWindow Display Methods.

1. showAsDropDown(View anchorView): Show popup at the position of the relative control (lower left), no deviation.
2. showAsDropDown(View anchorView, int xOffSet, int yOffSet): Show popup at the position of the relative control. xOffSet represents the offset of the x-axis, positive to the left, negative to the right. yOffSet represents the offset of the y-axis, positive to the down, negative to the up.
3. showAtLocation(View parentView, int gravity, int xOffSet, int yOffSet): Show popup at the location specified by the gravity value. ( Gravity.CENTER, Gravity.BOTTOM) etc.

2.3 PopupWindow Other Methods.

1. public void dismiss(): Close popup window when needed.
2. public void setFocusable(boolean focusable): Let PopupWindow get the focus, then it will be able to handle the click event of the physical button, otherwise the event will be passed up by the Activity. If there is an Editor in PopupWindow, the focusable value must be true.

2.4 Add Animation To PopupWindow.

1. PopupWindow.setAnimationStyle(R.style.ContextMenuAnim) can be used to add animation to a popup window.
2. The above popup_window_animation_phone is a style defined in app / res / values / styles.xml file.
3. The fade_in_animation and fade_out_animation are also custom-defined animation XML file saved under app / res / animator folder.
4. fade_in_animation.xml
5. Below are the create animation XML file steps.
6. Right-click the app/res folder.
7. Click New —> Android resource file menu item in the popup menu list.
8. Input the File name and choose Animator in the Resource type drop-down list.

3. Android PopupWindow Example.

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Popupwindow Android example in Kotlin

Popupwindow is a floating view that is displayed on top of an activity. Android provides a PopupWindow class for creating a popup window with the custom design.

It is present from the first versions of the API, but not as popular as other dialog boxes due to the need for additional configuration, which is not always necessary.

Android PopupWindow very useful when you want to show the dialog just over the view items. For Example you can able to show the dialog near to the more option of your cardview / button view.

Check out my popup window android example demo.

Now we are going to create popup window showed in the popupwindow example video.

1. Adding Dependencies

In this example, we are going to show list of items in the recyclerview. So, we need recyclerview and cardview dependencies.

I have explained about using recyclerview and cardview in separate post. Please check it in the links.

2. Create PopupWindow Layouts

As mentioned in the design, First we need to create popupWindow layout with recyclerview.

Recyclerview need a adapter view to hold the popup items. So, we need to create adapter layout file.

3. Implement PopupWindow With Data

We are using recyclerview in the popup window. so, we need model class to hold the data.

Also, we need to create adpater to set popup items.

In the Adapter, set the click listener interface for the popup window click callbacks.

Already, we have created layouts and adapter for the PopupWindows. Lets create the PopupWindow.

In the above code, I am using adapter.setOnClick to pass the implementation of the RecyclerviewCallbacks interface to receive the callbacks of the popup window items.

4. Show / Hide the PopupWindow

Now, our popup window is ready to display. So, whenever we need to show the popup window. call the below code.

To dismiss the popup window,

That’s it. Now we can able to show and hide the popup window in android.

Download the example code from Github.

Thanks for reading.

Please try this with example and let me know your feedback in comments.

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