Popup Alert Dialog Box Code Close Button Kotlin and Java with XML Style

This tutorial provides a simple and easy-to-follow guide for creating a dismissible pop-up dialog box in Android using both Kotlin and Java programming languages. The tutorial also covers how to style the dialog box using XML, making it a comprehensive resource for any developer looking to implement this feature in their Android application.

You will learn how to create a dismissible pop-up dialog box in Android

Kotlin Code

fun uploadPicReq() {
    val dialog = Dialog(this)
    dialog.requestWindowFeature(Window.FEATURE_NO_TITLE)
    dialog.setCancelable(false)
    dialog.setContentView(R.layout.upload_pic_warning)
    val yesBtn = dialog.findViewById(R.id.uploadpic) as Button
    yesBtn.setOnClickListener {
        val intent = Intent(applicationContext, BuyNow::class.java)
        intent.putExtra("ID", mPref.getUserId())
        startActivity(intent)
    }
    dialog.show()
}

Java Code

public void uploadPicReq() {
 Dialog dialog = new Dialog(this);
 dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
 dialog.setCancelable(false);
 dialog.setContentView(R.layout.upload_pic_warning);
 Button yesBtn = (Button) dialog.findViewById(R.id.uploadpic);
 yesBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
 Intent intent = new Intent(getApplicationContext(), BuyNow.class);
 intent.putExtra("ID", mPref.getUserId());
 startActivity(intent);
 }
});
 dialog.show();
}

Here are some things to consider:

1. this in the Dialog constructor refers to the current context. Ensure that the context being passed is valid and is not causing any issues.
2. The line dialog.setCancelable(false) disables the ability to dismiss the dialog box by pressing the back button. Consider if this is the desired behavior for your use case.
3. The setOnClickListener method is called on the yesBtn object, but it is not clear what it does. Ensure that the uploadpic button is correctly defined in the upload_pic_warning layout file and its functionality is implemented as intended.
4. Make sure that the BuyNow activity is correctly defined in the Android manifest file and is not causing any issues.

XML File upload_pic_warning.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="@android:color/transparent">

    <LinearLayout
        android:id="@+id/dialog_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/alert_dialog_bg"
        android:orientation="vertical"
        android:padding="16dp">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textColor="@color/grey_12"
            android:textStyle="bold"
            android:drawablePadding="15dp"
            android:textSize="20sp"
            android:text="@string/uploadPicWar"
            android:gravity="center"
            app:drawableTint="@color/white"
            android:layout_margin="20dp"
            app:drawableLeftCompat="@drawable/ic_image" />


        <TextView
            android:id="@+id/dialog_message"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="24dp"
            android:gravity="center"
            android:text="@string/uploadPicDesc"
            android:textAppearance="?android:textAppearanceMedium"
            android:textColor="@color/white" />

        <Button
            android:id="@+id/uploadpic"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="12dp"
            android:layout_marginStart="40dp"
            android:layout_marginEnd="40dp"
            android:layout_gravity="center"
            android:backgroundTint="#8BC34A"
            android:text="@string/upload_now"
            android:layout_marginTop="10dp"
            android:layout_marginBottom="5dp"
            android:textAllCaps="false"
            android:textColor="@android:color/white"
            android:textStyle="bold" />

    </LinearLayout>

</FrameLayout>

Alert Dialog Background “alert_dialog_bg.xml”

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="@color/black" />
    <corners android:radius="0dp" />

</shape>

You can check one of our apps on Play Store using these Alert Dialog boxes