Android 实现：标题、标点指示、器数字指示器的轮播图 banner

需要引入的module下载链接：https://pan.baidu.com/s/1sdlQefBTfkLsNO__ouwz8w

添加module方法步骤：

（1）File----->New------>Import Module找到下载的banner文件

（2）app的build.gradle下的dependencies下添加

compile project(':banner')

如：

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23+'
    compile 'com.android.support:recyclerview-v7:23+'
    compile "com.github.bumptech.glide:glide:3.7.0"
    compile 'com.facebook.fresco:fresco:0.12.0'
    compile 'com.zxy.android:recovery:0.0.8'
    compile project(':banner')
//    compile 'com.youth.banner:banner:+'
}

（3）settings.gradle下添加‘banner’

include ':app',':banner'

1、自定义banner类

public class Banner extends FrameLayout implements OnPageChangeListener {
    public String tag = "banner";
    private int mIndicatorMargin = BannerConfig.PADDING_SIZE;
    private int mIndicatorWidth;
    private int mIndicatorHeight;
    private int indicatorSize;
    private int bannerBackgroundImage;
    private int bannerStyle = BannerConfig.CIRCLE_INDICATOR;
    private int delayTime = BannerConfig.TIME;
    private int scrollTime = BannerConfig.DURATION;
    private boolean isAutoPlay = BannerConfig.IS_AUTO_PLAY;
    private boolean isScroll = BannerConfig.IS_SCROLL;
    private int mIndicatorSelectedResId = R.drawable.gray_radius;//指示点样式
    private int mIndicatorUnselectedResId = R.drawable.white_radius;//指示点样式
    private int mLayoutResId = R.layout.banner;
    private int titleHeight;
    private int titleBackground;
    private int titleTextColor;
    private int titleTextSize;
    private int count = 0;
    private int currentItem;
    private int gravity = -1;
    private int lastPosition = 1;
    private int scaleType = 1;
    private List<String> titles;
    private List imageUrls;
    private List<View> imageViews;
    private List<ImageView> indicatorImages;
    private Context context;
    private BannerViewPager viewPager;
    private TextView bannerTitle, numIndicatorInside, numIndicator;
    private LinearLayout indicator, indicatorInside, titleView;
    private ImageView bannerDefaultImage;
    private ImageLoaderInterface imageLoader;
    private BannerPagerAdapter adapter;
    private OnPageChangeListener mOnPageChangeListener;
    private BannerScroller mScroller;
    private OnBannerClickListener bannerListener;
    private OnBannerListener listener;
    private DisplayMetrics dm;

    private WeakHandler handler = new WeakHandler();

    public Banner(Context context) {
        this(context, null);
    }

    public Banner(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public Banner(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        this.context = context;
        titles = new ArrayList<>();
        imageUrls = new ArrayList<>();
        imageViews = new ArrayList<>();
        indicatorImages = new ArrayList<>();
        dm = context.getResources().getDisplayMetrics();
        indicatorSize = dm.widthPixels / 80;//指示点大小
        initView(context, attrs);
    }

    private void initView(Context context, AttributeSet attrs) {
        imageViews.clear();
        handleTypedArray(context, attrs);
        View view = LayoutInflater.from(context).inflate(mLayoutResId, this, true);
        bannerDefaultImage = (ImageView) view.findViewById(R.id.bannerDefaultImage);
        viewPager = (BannerViewPager) view.findViewById(R.id.bannerViewPager);
        titleView = (LinearLayout) view.findViewById(R.id.titleView);
        indicator = (LinearLayout) view.findViewById(R.id.circleIndicator);
        indicatorInside = (LinearLayout) view.findViewById(R.id.indicatorInside);
        bannerTitle = (TextView) view.findViewById(R.id.bannerTitle);
        numIndicator = (TextView) view.findViewById(R.id.numIndicator);
        numIndicatorInside = (TextView) view.findViewById(R.id.numIndicatorInside);
        bannerDefaultImage.setImageResource(bannerBackgroundImage);
        initViewPagerScroll();
    }

    private void handleTypedArray(Context context, AttributeSet attrs) {
        if (attrs == null) {
            return;
        }
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.Banner);
        mIndicatorWidth = typedArray.getDimensionPixelSize(R.styleable.Banner_indicator_width, indicatorSize);//指示点宽高
        mIndicatorHeight = typedArray.getDimensionPixelSize(R.styleable.Banner_indicator_height, indicatorSize);
        mIndicatorMargin = typedArray.getDimensionPixelSize(R.styleable.Banner_indicator_margin, BannerConfig.PADDING_SIZE);
        mIndicatorSelectedResId = typedArray.getResourceId(R.styleable.Banner_indicator_drawable_selected, R.drawable.gray_radius);
        mIndicatorUnselectedResId = typedArray.getResourceId(R.styleable.Banner_indicator_drawable_unselected, R.drawable.white_radius);
        scaleType = typedArray.getInt(R.styleable.Banner_image_scale_type, scaleType);
        delayTime = typedArray.getInt(R.styleable.Banner_delay_time, BannerConfig.TIME);
        scrollTime = typedArray.getInt(R.styleable.Banner_scroll_time, BannerConfig.DURATION);
        isAutoPlay = typedArray.getBoolean(R.styleable.Banner_is_auto_play, BannerConfig.IS_AUTO_PLAY);
        titleBackground = typedArray.getColor(R.styleable.Banner_title_background, BannerConfig.TITLE_BACKGROUND);
        titleHeight = typedArray.getDimensionPixelSize(R.styleable.Banner_title_height, BannerConfig.TITLE_HEIGHT);
        titleTextColor = typedArray.getColor(R.styleable.Banner_title_textcolor, BannerConfig.TITLE_TEXT_COLOR);
        titleTextSize = typedArray.getDimensionPixelSize(R.styleable.Banner_title_textsize, BannerConfig.TITLE_TEXT_SIZE);
        mLayoutResId = typedArray.getResourceId(R.styleable.Banner_banner_layout, mLayoutResId);
        bannerBackgroundImage = typedArray.getResourceId(R.styleable.Banner_banner_default_image, R.drawable.no_banner);
        typedArray.recycle();
    }

    private void initViewPagerScroll() {
        try {
            Field mField = ViewPager.class.getDeclaredField("mScroller");
            mField.setAccessible(true);
            mScroller = new BannerScroller(viewPager.getContext());
            mScroller.setDuration(scrollTime);
            mField.set(viewPager, mScroller);
        } catch (Exception e) {
            Log.e(tag, e.getMessage());
        }
    }

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2、activity调用banner    Module

（1）实现接口

public class MainActivity extends AppCompatActivity implements  OnBannerListener {

（2）实现数据添加

banner.setIndicatorGravity(BannerConfig.LEFT);//指示器位置左中右
banner.updateBannerStyle(BannerConfig.NUM_INDICATOR);//标题显示与否，指示器显示与否

//简单使用
banner.setImages(App.images)//图片
        .setBannerTitles(App.titles)//标题
        .setImageLoader(new GlideImageLoader())
        .setOnBannerListener(this)
        .start();

（3）接口方法

@Override
public void OnBannerClick(int position) {//item图片点击
    Toast.makeText(getApplicationContext(),"你点击了："+position,Toast.LENGTH_SHORT).show();
}