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Toast in Android? What is Toast?

 Toast in Android? What is Toast?





Toast is used to provide an alert dialog in the android application that will be automatically closed according to a given time interval.


Toast is the predefined class that contains maketext() to display content.


maketext() contain three different parameters.


1)  Address of container:-  we can use this, getApplicationContext, getContext, Activity Instance, Widget instance.


2) Message:-   It is used to display content in String Format


3)  Duration:-  we can pass time interval in milliseconds or Time Constant Length_Long (3 sec) and Length_Short(1 sec)


4) show():-  It is used to display alert box or toast into the application.


Example of Toast


1)  Design 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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity11">

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click"
android:onClick="toastexample"
>

</Button>

</LinearLayout>

2) Code File Example:-
package com.example.additionapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class MainActivity11 extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main11);
}
public void toastexample(View v)
{
Toast.makeText(this,"You clicked on Button",Toast.LENGTH_SHORT).show();
}
}



How to change the position of Toast?


if we want to change the position of Toast then we can use setGravity() and pass alignment, x and y co-ordinate.

toast.setGravity(Gravity.TOP|Gravity.LEFT, 0, 0); It is used to custome toast.


Custom Toast:-

It provides a custom view to the default layout of toast, we can display our own design under toast using custom toast options.

We can also change the alignment of toast because by default toast will appear at bottom of the screen.


Step1st:-

create layout file and design layout of toast according to requirement.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:padding="8dp"
android:background="#DAAA"
android:id="@+id/customtoastcontainer"
android:layout_height="fill_parent">

<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:src="@drawable/sss"></ImageView>

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="WELCOME IN SCS"
android:textSize="24dp"
android:textColor="#F44336"
></TextView>

</LinearLayout>

Step2nd:-
Create Activity and write following code on 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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity11">

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click"
android:onClick="toastexample"
>

</Button>

</LinearLayout>


Step3rd:-

package com.example.additionapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

public class MainActivity11 extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main11);
}
public void toastexample(View v)
{
// Toast.makeText(this,"You clicked on Button",Toast.LENGTH_SHORT).show();
LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(R.layout.layouttoast,
(ViewGroup) findViewById(R.id.customtoastcontainer));
Toast toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();

}
}






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