安卓--圖片切換（ImageSwitcher）執行個體

標籤：android   imageswitcher   

main.xml代碼如下：

<?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" >    <ImageSwitcher        android:id="@+id/imageSwitcher"        android:layout_width="wrap_content"        android:layout_height="wrap_content" >    </ImageSwitcher>    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:orientation="horizontal" >        <Button            android:id="@+id/btnPrevious"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:enabled="false"            android:text="上一張圖片" />        <Button            android:id="@+id/btnNext"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:enabled="true"            android:text="下一張圖片" />    </LinearLayout></LinearLayout>

.java代碼如下：

package org.lxh.demo;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.os.Bundle;import android.text.method.ScrollingMovementMethod;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup.LayoutParams;import android.view.animation.AnimationUtils;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.Button;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.SeekBar;import android.widget.SeekBar.OnSeekBarChangeListener;import android.widget.Spinner;import android.widget.TextView;import android.widget.Toast;import android.widget.ViewSwitcher.ViewFactory;public class Hello extends Activity {private ImageSwitcher imageSwitcher = null;private Button btnPrevious = null;private Button btnNext = null;private int[] imgRes = new int[] { R.drawable.ispic_a, R.drawable.ispic_b,R.drawable.ispic_c, R.drawable.ispic_d, R.drawable.ispic_e, };private int foot = 0;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // 生命週期方法super.setContentView(R.layout.main); // 設定要使用的布局管理器this.imageSwitcher = (ImageSwitcher) super.findViewById(R.id.imageSwitcher);this.btnPrevious = (Button) super.findViewById(R.id.btnPrevious);this.btnNext = (Button) super.findViewById(R.id.btnNext);this.imageSwitcher.setFactory(new ViewFactoryImpl());        this.imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));        this.imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));this.imageSwitcher.setImageResource(imgRes[foot++]);this.btnPrevious.setOnClickListener(new OnClickListenerPrevious());this.btnNext.setOnClickListener(new OnClickListenerNext());}private class OnClickListenerPrevious implements OnClickListener {public void onClick(View arg0) {Hello.this.imageSwitcher.setImageResource(imgRes[foot--]);Hello.this.checkButtonEnable();}}private class OnClickListenerNext implements OnClickListener {public void onClick(View arg0) {Hello.this.imageSwitcher.setImageResource(imgRes[foot++]);Hello.this.checkButtonEnable();}}private class ViewFactoryImpl implements ViewFactory {public View makeView() {ImageView img = new ImageView(Hello.this);img.setBackgroundColor(0xFFFFFFFF);img.setScaleType(ImageView.ScaleType.CENTER);img.setLayoutParams(new ImageSwitcher.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));return img;}}private void checkButtonEnable() {if (this.foot < this.imgRes.length - 1) {this.btnNext.setEnabled(true);} else{this.btnNext.setEnabled(false);}if (this.foot == 0) {this.btnPrevious.setEnabled(false);} else{this.btnPrevious.setEnabled(true);}}}

效果如下：

原始碼下載：http://download.csdn.net/detail/yayun0516/8380329

安卓--圖片切換（ImageSwitcher）執行個體