A toast displays a simple message in a small popup, which automatically disappear after a timeout. The code to display a Toast is:
Context context = getApplicationContext(); CharSequence text = "Hello toast!"; int duration = Toast.LENGTH_SHORT; Toast toast = Toast.makeText(context, text, duration); toast.show();
Position of Toast: A standard toast notification appears near the bottom of the screen, centered horizontally. You can change this position with the setGravity(int, int, int) method. This accepts three parameters: a Gravity constant, an x-position offset, and a y-position offset. For example, if you decide that the toast should appear in the top-right corner, you can set the gravity like this:
toast.setGravity(Gravity.TOP|Gravity.RIGHT, 0, 0);
Now let’s create an app which Toast a message on button click.
Step 1: Create a new project and name it toastexample. Select File -> New -> New Project. Fill the forms and click “Finish” button.
Step 2: Open res -> layout -> xml (or) main.xml and add following code. Here we will create a Button in a LinearLayout.
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp"
tools:context=".MainActivity">
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="#f00"
android:padding="10dp"
android:text="Show Toast"
android:textColor="#fff"
android:textStyle="bold" />
</LinearLayout>Step 3: Open app -> java -> package and open MainActivity.java. Add following code in it. Here we will Toast a message “This is my toast” when the user clicks the Button.
package example.myandroid.toastexample;
import android.graphics.Color;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity {
//Declare Button
private Button button1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//Find Button using it's id from xml file
button1 = (Button) findViewById(R.id.button1);
//Set an onClickListener for the Button
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//Toast a message when Button is clicked
Toast.makeText(getApplicationContext(),"This is my toast", Toast.LENGTH_SHORT).show();
}
});
}
}Output:
Now run the app and click on the button. The app will show toast message “This is my toast”.