Создание пользовательских Android Toast

1- Custom Toast

2- Пример кастомизированного Toast

На  Android Studio создайте новый project:
  • File > New > New Project > Empty Activity
    • Name: CustomToastExample
    • Package name: org.o7planning.customtoastexample
    • Language: Java
Скопируйте иконку (icon_info.png) в папку  drawable у project.
В данном примере я использую  "Resource Layout File"​​​​​​​, чтобы сделать дизайн интерфейса для  Toast, вы так же можете создать интерфейс для  Toast только  Java кодом(Смотрите больше в примере).
OK, нажмите на правую кнопку мыши на папку  "layout" и выберите:
  • New > Layout Resource File
  • File name: layout_custom_toast.xml
  • Root element: LinearLayout
  • Source set: main
  • Directory name: layout
И теперь вы можете сделать дизайн интерфейса для  Toast.
Настроить  ID, Text, Padding, layout_weight для компонентов на интерфейсе:
layout_custom_toast.xml
<?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:orientation="horizontal"
    android:padding="10sp">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="0"
        android:paddingRight="10sp"
        app:srcCompat="@drawable/icon_info" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Message" />
</LinearLayout>
Основной интерфейс приложения:
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    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"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button_show"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="32dp"
        android:text="Show Custom Toast"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package org.o7planning.customtoastexample;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private Button buttonShow;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        this.buttonShow = (Button) this.findViewById(R.id.button_show);
        this.buttonShow.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                buttonShowClicked();
            }
        });
    }

    // Create Toast with "Resource Layout File".
    private void buttonShowClicked()  {
        LayoutInflater inflater = this.getLayoutInflater();

        View layout = inflater.inflate(R.layout.layout_custom_toast, null);
        // TextView in layout_custom_toast.
        TextView textView = (TextView) layout.findViewById(R.id.textView);
        textView.setText("This is a message");
        textView.setTextColor(Color.BLUE);
        // Create Toast
        Toast toast = new Toast(this);
        toast.setDuration(Toast.LENGTH_LONG);
        toast.setView(layout);
        toast.show();
    }

    // Create Toast without "Resource Layout File".
    private void buttonShowClicked2()  {
        LinearLayout layout  = new LinearLayout(this);
        layout.setOrientation(LinearLayout.HORIZONTAL);
        layout.setPadding(10,10, 10, 10);
        //
        ImageView imageView = new ImageView(this);
        imageView.setImageResource(R.drawable.icon_info);
        imageView.setPadding(0, 0, 10, 0);
        //
        TextView textView = new TextView(this);
        textView.setTextColor(Color.BLUE);
        textView.setText("This is a message");

        LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT,0);
        layout.addView(imageView, params1);

        LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT,1);
        layout.addView(textView, params2);

        // Create Toast
        Toast toast = new Toast(this);
        toast.setDuration(Toast.LENGTH_LONG);
        toast.setView(layout);
        toast.show();
    }
}