【Android 界面效果6】Android 控件之ImageSwitcher图片切换器

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

源码下载

 

一、重要方法

　　　　setImageURI(Uri uri)：设置图片地址

　　　　setImageResource(int resid)：设置图片资源库

　　　　setImageDrawable(Drawable drawable)：绘制图片

二、实例

　　 <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"     />

 

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

is.setFactory(this);

 

设置动画效果

  is.setInAnimation(AnimationUtils.loadAnimation(this,    android.R.anim.fade_in));  is.setOutAnimation(AnimationUtils.loadAnimation(this,    android.R.anim.fade_out));

　　

三、完整代码

1.布局文件

<?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>    2.Java代码

package wjq.WidgetDemo;

import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.view.animation.AnimationUtils;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.Gallery.LayoutParams;import android.widget.ViewSwitcher.ViewFactory;

public class ImageSwitcherDemo 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, };

 /*  * (non-Javadoc)  *   * @see android.app.Activity#onCreate(android.os.Bundle)  */ @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  requestWindowFeature(Window.FEATURE_NO_TITLE);  setContentView(R.layout.imageswitcherpage);

  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) {  // TODO Auto-generated method stub

 }

}

 

转载于:https://www.cnblogs.com/dongdong230/archive/2013/05/13/4183151.html