Android被逼学习小例子1

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package hello.com;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.TextView;

import android.widget.LinearLayout;

public class HelloWorldActivity extends Activity {

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

    int[] images = new int[] {

    R.drawable.ajax, R.drawable.java, R.drawable.ee, R.drawable.classic,

            R.drawable.xml, };

    int currentImage = 0;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        LinearLayout mainLayout = (LinearLayout) findViewById(R.id.root);

        final ImageView image = new ImageView(this);

        mainLayout.addView(image);

        image.setImageResource(images[0]);

        image.setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View v) {

                if (currentImage >= 4) {

                    currentImage = -1;

                }

                image.setImageResource(images[++currentImage]);

            }

        });

    }

}

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

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

    android:id="@+id/root"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

</LinearLayout>