Android(安卓)ImageView example

main.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:orientation="vertical" >

<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/android" />

<Button
android:id="@+id/btnChangeImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Change Image" />

</LinearLayout>

ImageViewDemoActivity.java

package com.cjp.imageview;

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

public class ImageViewDemoActivity extends Activity {

Button button;
ImageView image;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

addListenerOnButton();

}

public void addListenerOnButton() {

image = (ImageView) findViewById(R.id.imageView1);

button = (Button) findViewById(R.id.btnChangeImage);
button.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
image.setImageResource(R.drawable.android3d);
}

});

}

}

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