制作简单的图片浏览器

（1）加载图片和浏览图片的布局文件

图片预先放置在这里。

主要的布局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >
<LinearLayout
      android:id="@+id/L1"
      android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
    <Button
        android:id="@+id/b1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/p1" />
        <Button
        android:id="@+id/b2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/p2" />

</LinearLayout>
<ImageButton
     android:id="@+id/I1"
      android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
    </ImageButton>
</LinearLayout>

（2）主要控制代码，点击下一张，上一张浏览图片

package com.example.tupian;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends Activity {
	ImageView iv;
	int count;
	int draeableIds[]={
			R.drawable.pic0,
			R.drawable.pic1,
			R.drawable.pic2,
			R.drawable.pic3,
			R.drawable.pic4,
			R.drawable.pic5,
			R.drawable.pic6,
			R.drawable.pic7,
			R.drawable.pic8,
			R.drawable.pic9 ,
	};

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		iv=(ImageView)findViewById(R.id.I1);
		iv.setImageResource(R.drawable.no0);
		Button b2=(Button)findViewById(R.id.b2);
		Button b1=(Button)findViewById(R.id.b1);
		b1.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub

				if(count>0)
				{
					iv.setImageResource(draeableIds[--count]);
				}
				else

					Toast.makeText(MainActivity.this, "这是第一幅", Toast.LENGTH_SHORT).show();
			}
		});
b2.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub

				if(count<draeableIds.length-1)
				{
					iv.setImageResource(draeableIds[++count]);
				}
				else
					Toast.makeText(MainActivity.this, "这是最后一幅", Toast.LENGTH_SHORT).show();
			}
		});

	}

	@Override
	public 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;
	}

}

按照上面的步骤做一个简单的图片浏览器就做好了。