Banner无线轮播

添加依赖

 compile 'com.youth.banner:banner:1.4.9'
 compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'

权限和以前的一样

先写一个全局的类

package com.bawie.day1018;

import android.app.Application;

import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

public class App extends Application{
    @Override
    public void onCreate() {
        super.onCreate();
        //初始化组件
        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this).build();
        ImageLoader.getInstance().init(configuration);
    }
}

加载图片

package com.bawie.day1018;

import android.content.Context;
import android.widget.ImageView;

import com.youth.banner.loader.ImageLoader;

/**
 * Created by Administrator on 2017/10/18.
 */

public class BannerImageLoader extends ImageLoader{
    @Override
    public void displayImage(Context context, Object obj, ImageView imageView) {

        com.nostra13.universalimageloader.core.ImageLoader instance = com.nostra13.universalimageloader.core.ImageLoader.getInstance();
        instance.displayImage((String) obj,imageView);
    }
}

主界面

package com.bawie.day1018;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

import com.youth.banner.Banner;

import java.util.ArrayList;
import java.util.Arrays;

public class MainActivity extends AppCompatActivity {

    private Banner banner;
    String[] urls = {"https://img-my.csdn.net/uploads/201407/26/1406383265_8550.jpg",
            "https://lh4.googleusercontent.com/--dq8niRp7W4/URquVgmXvgI/AAAAAAAAAbs/-gnuLQfNnBA/s160-c/A%252520Song%252520of%252520Ice%252520and%252520Fire.jpg",
            "https://lh5.googleusercontent.com/-7qZeDtRKFKc/URquWZT1gOI/AAAAAAAAAbs/hqWgteyNXsg/s160-c/Another%252520Rockaway%252520Sunset.jpg",
            "https://lh3.googleusercontent.com/--L0Km39l5J8/URquXHGcdNI/AAAAAAAAAbs/3ZrSJNrSomQ/s160-c/Antelope%252520Butte.jpg",
            "https://lh6.googleusercontent.com/-8HO-4vIFnlw/URquZnsFgtI/AAAAAAAAAbs/WT8jViTF7vw/s160-c/Antelope%252520Hallway.jpg",
            "https://lh4.googleusercontent.com/-WIuWgVcU3Qw/URqubRVcj4I/AAAAAAAAAbs/YvbwgGjwdIQ/s160-c/Antelope%252520Walls.jpg"};
    ArrayList list = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        banner = (Banner) findViewById(R.id.banner);
        //图片加载器
        banner.setImageLoader(new BannerImageLoader());
        //设置图片集合
        banner.setImages(Arrays.asList(urls));
        //启动轮播
        banner.start();
    }
}
布局
    "@+id/banner"
        android:layout_width="368dp"
        android:layout_height="150dp"
        tools:layout_editor_absoluteY="0dp"
        tools:layout_editor_absoluteX="8dp" />