Android Toast

--> Android Toast Example code

Alerts
Alerts provide a quick message to the user outside of the application’s main UI. It can be in an overlay window such as a Toast or AlertDialog box. It can also be in the notification bar at the top of the screen.The Toast alert provides a printed message to the screen with a single line of code.There is no need to work with the layout files. For this reason, it is also a handy debug tool, equivalent to the printf statement in C programs.

Using Toast to Show a Brief Message on the Screen
The Toast method has been introduced in the previous chapter in a compact form:

Toast.makeText(this, "text", Toast.LENGTH_SHORT).show();

It can also be written as a multiline command:
Toast tst = Toast.makeText(this, "text", Toast.LENGTH_SHORT);
tst.show();

ToastExample.java Code

package android.example.toast;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class ToastExample extends Activity {

  

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

               

        Button button;

        // short notification

        button = (Button) findViewById(R.id.short_notify);

        button.setOnClickListener(new Button.OnClickListener() {

            public void onClick(View v) {

               

                Toast.makeText(ToastExample.this, "This is Short Notification",

                    Toast.LENGTH_SHORT).show();

            }

        });

        // long notification

        button = (Button) findViewById(R.id.long_notify);

        button.setOnClickListener(new Button.OnClickListener() {

            public void onClick(View v) {

                 

                Toast.makeText(ToastExample.this, "This is Long Time Notification",

                    Toast.LENGTH_LONG).show();

            }

        });     

    }

}

main.xml Code

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:background="#225588"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:text="Toast Example"

        android:textColor="#FF8800"

        android:textStyle="bold"

        android:textSize="36dp" />

    <Button

        android:id="@+id/short_notify"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="10dp"

        android:text="Short Toast Notify" />

    <Button

        android:id="@+id/long_notify"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="5dp"

        android:text="Long Toast Notify" />

</LinearLayout>

Download Android Toast Example code 

More Info

Android Notification
  -->

Android Control ควบคุมอุปกรณ์ต่างๆ ด้วย Android

http://androidcontrol.blogspot.com

สอนเขียน Android  สอนเขียนโปรแกรม Android

http://androidcontrol.blogspot.com/2012/01/beginning-android-training-android.html

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