android studio BUTTON使用

Main.xml

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

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

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:padding="10dip"

    >

    <TextView

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:id="@+id/TextView01"

    android:text="Steve Jobs Famous Quotes"

    android:layout_marginTop="10sp"

    android:textSize="20sp"

    />

    <Button

    android:layout_width="wrap_content"

android:layout_height="wrap_content"

    android:layout_marginTop="10sp"

    android:text=" Click me! "

    android:id="@+id/Button01"

    />

</LinearLayout>

Java檔

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

publicclass TestExam001 extends Activity { 

    /** Called when the activity is first created. */

    private Button button01;

    private TextView textView01; 

    @Override

    publicvoid onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);       

        button01 = (Button)findViewById(R.id.Button01);

        textView01 = (TextView)findViewById(R.id.TextView01);       

        button01.setOnClickListener(new Button.OnClickListener(){ 

            @Override

            publicvoid onClick(View v) {

                // TODO Auto-generated method stub

                textView01.setText("Stay Hungry, Stay Foolish. ");

            }         

        });     

    }

}