【Android开发学习】简单的图片浏览

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基于Android 4.2 SDK

布局文件如下：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/root"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity" ></RelativeLayout>

Java源代码如下：

package com.example.image_display_demo;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.ImageView;import android.widget.RelativeLayout;public class MainActivity extends Activity {int[] images = new int[]{R.drawable.dff1,R.drawable.dff2,R.drawable.dff3,R.drawable.dff4,R.drawable.dff5,R.drawable.dff6,};int currentImage = 0;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//获取RelativeLayout布局容器RelativeLayout layout = (RelativeLayout)findViewById(R.id.root);//程序创建ImageView组件final ImageView image = new ImageView(this);//将ImageView组件添加到RelativeLayout布局容器中layout.addView(image);//初始化时显示第一张图片image.setImageResource(images[0]);image.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v) {// TODO Auto-generated method stubimage.setImageResource(images[++currentImage % images.length]);}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}