升级版无限轮播及Imageloader缓存图片

public class MainActivity extends AppCompatActivity {
private Banner banner;
private List list;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//首先写网络权限  读写权限 注册App
//第一步:导入依赖
// implementation 'com.youth.banner:banner:1.4.9' 运行一次
// implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
//第二步 写布局

// <com.youth.banner.Banner
// android:id="@+id/banner"
// android:layout_width=“match_parent”
// android:layout_height=“200dp” />
//3.找控件
banner = findViewById(R.id.banner);
//4.数据
list = new ArrayList();
list.add(“https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151721118&di=649c9a43aed72fbc4d99ec1a031510c6&imgtype=0&src=http%3A%2F%2Fimg.zcool.cn%2Fcommunity%2F015c7d574b9f8f6ac72525aee98351.jpg”);
list.add(“https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151956771&di=0eb6f306991d24b67a13ceb336f80102&imgtype=0&src=http%3A%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F00613def3f1beb7a35ae136341be2b589bc46a2d.jpg_320x200.jpg”);
list.add(“https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151847685&di=c7a4b5d08ec43fa629bcb690039a7629&imgtype=0&src=http%3A%2F%2Fattimg.dospy.com%2Fimg%2Fday_080625%2F20080625_2e91a10c444877e88827vri2ZKdGMvQo.jpg”);
list.add(“https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151825129&di=70bf74b87d8a15cb91a2d79f15ed0eaf&imgtype=0&src=http%3A%2F%2Fattimg.dospy.com%2Fimg%2Fday_081016%2F20081016_fee215664d5740e56c13E2YB8giERFEX.jpg”);
list.add(“https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505746504&di=930c4d677a02328a142d6fa85ed14580&imgtype=jpg&er=1&src=http%3A%2F%2Fattimg.dospy.com%2Fimg%2Fday_090113%2F20090113_6ac58b42bea94f0b318e1B6BZb5lPZl5.jpg”);
//设置图片加载器
banner.setImageLoader(new ImageLoader() {
@Override
public void displayImage(Context context, Object path, ImageView imageView) {
com.nostra13.universalimageloader.core.ImageLoader instance= com.nostra13.universalimageloader.core.ImageLoader.getInstance();
instance.displayImage((String) path,imageView);
}
});
banner.setImages(list);//图片数据
banner.isAutoPlay(true);//是否轮播
banner.setDelayTime(2000);//图片切换时间
banner.start();//开始轮播
}
}
App缓存imageloader图片
public class App extends Application {
@Override
public void onCreate() {
super.onCreate();
String path=Environment.getExternalStorageDirectory().getPath()+"/Image";
File file=new File(path);
ImageLoaderConfiguration config=new ImageLoaderConfiguration.Builder(this)
.memoryCacheExtraOptions(200,200).memoryCacheSize(210241024)
.threadPoolSize(3).threadPriority(1000).diskCache(new UnlimitedDiskCache(file))
.diskCacheFileCount(50).diskCacheFileNameGenerator(newMd5FileNameGenerator()).
diskCacheSize(5010241024).build();
ImageLoader.getInstance().init(config);
}
}