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You are reading my article, which means you are an android developer and want to create your own custom AlertDialog box.

You might be thinking that this is difficult coding. Don’t worry. I am here to help you. You just follow my procedure, you will end up designing a very beautiful custom AlertDialog box as below.

Step 1:

First, you need to design an XML file. Let design an XML file agreement_dialog.xml. It has

Textview (for title) – Agreement
Textview inside Scrollview. If your message is longer than your device height, you can scroll down to see all texts.
2 buttons: one for “Accept” and one for “Reject”

Now see an XML source code to design.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/background">

    <TextView
        android:id="@+id/dialog_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:gravity="center_horizontal"
        android:textSize="30sp"
        android:textStyle="bold"
        android:textColor="@color/white"
        android:background="@color/black"
        android:text="@string/dialog_title"/>

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/dialog_title">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/relativeLayout"
            android:background="@color/background"
            android:padding="10dp">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/agreementlayout"
                android:layout_gravity="center"
                android:orientation="vertical">

                <TextView
                    android:id="@+id/agreement1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/agreement"
                    android:textColor="@color/black"
                    android:textSize="25sp"/>

            </LinearLayout>


            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/buttonlayout"
                android:layout_marginTop="10dp"
                android:layout_gravity="center"
                android:orientation="horizontal"
                android:layout_below="@+id/agreementlayout">

                <Button
                    style="?android:attr/actionButtonStyle"
                    android:id="@+id/button_accept"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.50"
                    android:textColor="@color/white"
                    android:textSize="30sp"
                    android:background="@color/green"
                    android:text="@string/accept"
                    android:textStyle="bold|italic"/>

                <Button
                    style="?android:attr/actionButtonStyle"
                    android:id="@+id/button_reject"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.50"
                    android:textColor="@color/white"
                    android:textSize="30sp"
                    android:background="@color/watermelonRed"
                    android:text="@string/reject"
                    android:textStyle="bold|italic"/>

            </LinearLayout>
        </RelativeLayout>
    </ScrollView>
</RelativeLayout>

In the above agreement_dialog.xml file, you may have noticed that the text and colors are not written directly. They are defined under strings.xml and colors.xml files and provide the reference.

Now, let work on your strings.xml

</resources>
    <string name="dialog_title">Agreement</string>
    <string name="agreement">Write Your Agreement Here </string>
    <string name="accept">Accept</string>
    <string name="reject">Reject</string>
</resources>

Now colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>  
    <color name="background">#CED6E0</color>
    <color name="white">#ffffff</color>
    <color name="black">#000000</color>
    <color name="green">#006622</color>
    <color name="watermelonRed">#EB3B5A</color>
</resources>

Step 2:

Create a button on your activity.xml Whenever the button is clicked, an AlertDialogue button should open.

Here is a design for your button XML file.

<?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:gravity="center"
    android:id="@+id/alertdialog"
    android:orientation="vertical">
  
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/openalertdialog"
        android:text="@string/open_alertdialog"
     />
</LinearLayout>

Now, add one more string in your strings.xml file.

<string name="open_alertdialog">Show AlertDialog</string>

Step 3:

Open custom AlertDialog on clicked on the activity button.

 openalertdialog.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //Toast.makeText(Activity.this, "Collect clicked", Toast.LENGTH_SHORT).show();
                final AlertDialog.Builder builder = new AlertDialog.Builder(Activity.this);

                // set the custom layout
                final View customLayout = getLayoutInflater().inflate(R.layout.agreement_dialog, null);
                builder.setView(customLayout);

                //set button accept and reject onclicklistener
                btnaccept = customLayout.findViewById(R.id.button_accept);
                btnreject = customLayout.findViewById(R.id.button_reject);

                btnaccept.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        //If accept, go to accept activity
                        Intent intent_accept = new Intent(Activity.this, Accept.class);
                        startActivity(intent_accept); 
                    }
                });

                btnreject.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                         //If reject, go to reject activity
                        Intent intent_reject = new Intent(Activity.this, Reject.class);
                        startActivity(intent_reject); 
                    }
                });

                AlertDialog alert = builder.create();
                alert.show();
        });