Question

ImageSwitcher

翻译人：wallace2010

版本：Android 2.2 r1

public class ImageSwitcher extends ViewSwitcher

java.lang.Object

android.view.View

android.view.ViewGroup

android.widget.FrameLayout

android.widget.ViewAnimator

android.widget.ViewSwitcher

android.widget.ImageSwitcher

类概述

（译者注：ImageSwitcher 是 Android 中控制图片展示效果的一个控件，如：幻灯片效果...，颇有感觉啊，做相册一绝。）

公共方法

public void setImageDrawable (Drawable drawable)

绘制图片

public void setImageResource (int resid)

设置图片资源库

public void setImageURI (Uri uri)

设置图片地址

补充

文章链接

Android ImageSwitcher

Image Switcher View | Android Developer Tutorial

示例代码（本文代码转载自 这里 ）

java 文件

public class mainactivity extends Activity implements

OnItemSelectedListener, ViewFactory {

private ImageSwitcher is;

private Gallery gallery;

private Integer[] mThumbIds = { R.drawable. b , R.drawable. c ,

R.drawable. d , R.drawable. f , R.drawable. g ,

};

private Integer[] mImageIds = { R.drawable. b , R.drawable. c ,

R.drawable. d , R.drawable. f , R.drawable. g , };

@Override

protected void onCreate(Bundle savedInstanceState) {

super .onCreate(savedInstanceState);

requestWindowFeature(Window. FEATURE_NO_TITLE );

setContentView(R.layout. main );

is = (ImageSwitcher) findViewById(R.id. switcher );

is.setFactory( this );

is.setInAnimation(AnimationUtils. loadAnimation ( this ,

android.R.anim. fade_in ));

is.setOutAnimation(AnimationUtils. loadAnimation ( this ,

android.R.anim. fade_out ));

gallery = (Gallery) findViewById(R.id. gallery );

gallery.setAdapter( new ImageAdapter( this ));

gallery.setOnItemSelectedListener( this );

}

@Override

public View makeView() {

ImageView i = new ImageView( this );

i.setBackgroundColor(0xFF000000);

i.setScaleType(ImageView.ScaleType. FIT_CENTER );

i.setLayoutParams( new ImageSwitcher.LayoutParams(

LayoutParams. MATCH_PARENT , LayoutParams. MATCH_PARENT ));

return i;

}

public class ImageAdapter extends BaseAdapter {

public ImageAdapter(Context c) {

mContext = c;

}

public int getCount() {

return mThumbIds.length;

}

public Object getItem( int position) {

return position;

}

public long getItemId( int position) {

return position;

}

public View getView( int position, View convertView, ViewGroup parent) {

ImageView i = new ImageView(mContext);

i.setImageResource(mThumbIds[position]);

i.setAdjustViewBounds( true );

i.setLayoutParams( new Gallery.LayoutParams(

LayoutParams. WRAP_CONTENT , LayoutParams. WRAP_CONTENT ));

i.setBackgroundResource(R.drawable. e );

return i;

}

private Context mContext;

}

@Override

public void onItemSelected(AdapterView<?> parent, View view, int position,

long id) {

is.setImageResource(mImageIds[position]);

}

@Override

public void onNothingSelected(AdapterView<?> parent) {

}

}

xml 文件

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

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

android:layout_width= "match_parent"

android:layout_height= "match_parent" >

<ImageSwitcher android:id= "@+id/switcher"

android:layout_width= "match_parent"

android:layout_height= "match_parent"

android:layout_alignParentTop= "true"

android:layout_alignParentLeft= "true"

/>

<Gallery android:id= "@+id/gallery"

android:background= "#55000000"

android:layout_width= "match_parent"

android:layout_height= "60dp"

android:layout_alignParentBottom= "true"

android:layout_alignParentLeft= "true"

android:gravity= "center_vertical"

android:spacing= "16dp"

/>

</RelativeLayout>