PutExtra Android

--> PutExtra Android Example Code

 PutExtra.java

package com.example.extra;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

public class PutExtra extends Activity {

   

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.putextra);

       

        final EditText et = (EditText)findViewById(R.id.et);

       

        Button bn = (Button)findViewById(R.id.bn);

        bn.setOnClickListener(new OnClickListener() {

                 

                  public void onClick(View arg0) {

                        Intent intent = new Intent(PutExtra.this, getExtra.class);

                        intent.putExtra("text", et.getText().toString());

                        startActivity(intent);

                  }

            });

    }

}

 getExtra.java

package com.example.extra;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.widget.TextView;

public class getExtra extends Activity {

   

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.getextra);

       

        TextView tv = (TextView)findViewById(R.id.tv);

       

        Intent intent = getIntent();

        String extra = intent.getStringExtra("text");      

        tv.setText(extra);

    }

}

putextra.xml

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

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="#AA66CC"

    android:orientation="vertical" >

    <EditText

        android:id="@+id/et"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Put Extra Data" />

   

    <Button

        android:id="@+id/bn"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="putExtra"/>

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginLeft="20dp"

        android:layout_marginTop="300dp"

        android:textSize="26dp"

        android:textColor="#0000FF"

        android:text="putextra.xml"

        android:textAppearance="?android:attr/textAppearanceMedium" />

   

</LinearLayout>

getextra.xml

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

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="#FF4444"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/tv"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="20dp"

        android:text="Get Extra"

        android:textColor="#000000"

        android:background="#FFBB33"

        android:textSize="30dp" />

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginLeft="20dp"

        android:layout_marginTop="300dp"

        android:text="getextra.xml"

        android:textAppearance="?android:attr/textAppearanceLarge" />

</LinearLayout>

  

Passing Data Using an Intent Object

How It Works

To use the Intent object to carry data to the target activity, you made use of a Bundle object:

Bundle extras = new Bundle();

extras.putString(“Name”, “Your name here”);

i.putExtras(extras);

Bundle extras = getIntent().getExtras();

if (extras!=null)

{

defaultName = extras.getString(“Name”);

}

//---get the EditText view---

EditText txt_username =

(EditText) findViewById(R.id.txt_username);

txt_username.setHint(defaultName);

Download put Extra Android example code 

-->

Android Control ควบคุมอุปกรณ์ต่างๆ ด้วย Android

http://androidcontrol.blogspot.com

สอนเขียน Android  สอนเขียนโปรแกรม Android

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

ติดต่อ amphancm@gmail.com