How to create android dialog with a custom layout


Android Alert Dialog is a small window that prompts the user to enter some additional information. A dialog does not fill the screen and is usually used for modal events that require a user to enter some information or take an action. Today we are going to learn how to create android dialog with a custom layout

Android Dialog with custom layout example
Android Dialog with custom layout example



How to display android dialog in a custom layout

To create an android dialog in a custom layout is too simple, you just need to create a class that extends DialogFragment, then inflate your custom layout and that’s all.

Go ahead and create a new android studio project from FILE > New Project. Fill in all the necessary details, in the activity section, select Basic Activity and proceed.

Create a custom layout for the dialog. To create a custom layout; right click on layout and select create new layout and the following code:

custom_login_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="10dp">

    <EditText
        android:id="@+id/email"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="15dp"
        android:hint="Enter Email"
        android:inputType="textEmailAddress" />

    <EditText
        android:id="@+id/password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Enter your password"
        android:inputType="textPassword" />

</LinearLayout>


Create a dialog java class, that extends DialogFragment, call it CustomLoginDialog.java. Add the following code in your custom dialog class.

CustomLoginDialog.java

package hack.hacksmile.hacksmiletutorials;

import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AlertDialog;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class CustomLoginDialog extends DialogFragment {
    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        View view = getActivity().getLayoutInflater().inflate(R.layout.custom_login_layout, null);
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

        builder.setTitle("Login");
        builder.setView(view);

        final EditText emailText = view.findViewById(R.id.email);
        final EditText passwordText = view.findViewById(R.id.password);

        builder.setNegativeButton("Cancel", null);
        builder.setPositiveButton("Login", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                Toast.makeText(getActivity(), "Email is " + emailText.getText().toString() + " and password is" + passwordText.getText().toString(), Toast.LENGTH_SHORT).show();
            }
        });

        return builder.create();

    }

    @Override
    public void onCancel(DialogInterface dialog) {
        super.onCancel(dialog);
        Toast.makeText(getActivity(), "Dialog Canceld", Toast.LENGTH_SHORT).show();
    }
}

Now it’s time to show dialog in the main activity. We shall create a button in the MainActivity layout, that will show the dialog when clicked. Go ahead and add the following code in the content_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="match_parent"
    android:padding="10dp"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".MainActivity"
    tools:showIn="@layout/activity_main">

    <Button
        android:onClick="login"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="Login" />

</RelativeLayout>


As you have noticed above we have included an XML attribute onClick=”login” , this is the method that will be called everytime the button is clicked, so go ahead and add the following code in your MainActivity.java.

package hack.hacksmile.hacksmiletutorials;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);


    }

    public void login(View view) {
        CustomLoginDialog customLoginDialog = new CustomLoginDialog();
        customLoginDialog.show(getSupportFragmentManager(), "login_dialog");

    }
}

Showing dialog is way too simple you just call the following code:

CustomLoginDialog customLoginDialog = new CustomLoginDialog();
customLoginDialog.show(getSupportFragmentManager(), "login_dialog");
// fragment manager and a dialog tab, tag can be anything or any name
// customLoginDialog.show(fragmentManager, tag [this is arbitrary string])


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