Java 类com.nostra13.universalimageloader.core.display.CircleBitmapDisplayer 实例源码

public CreditsAdapter(@NonNull Context context, @NonNull List<Credit> credits) {
    mContext = context;
    mCredits = credits;

    int color = ColorHelper.getAttributeColor(mContext, android.R.attr.textColorSecondary);
    Drawable drawable = DrawableHelper.getTintedDrawable(
            mContext, R.drawable.ic_toolbar_default_profile, color);

    mOptions = ImageConfig.getRawDefaultImageOptions();
    mOptions.resetViewBeforeLoading(true);
    mOptions.cacheInMemory(true);
    mOptions.cacheOnDisk(true);
    mOptions.showImageForEmptyUri(drawable);
    mOptions.showImageOnFail(drawable);
    mOptions.showImageOnLoading(drawable);
    mOptions.displayer(new CircleBitmapDisplayer());
}

/**
 * 获取一个圆形的配置
 * 
 * @return
 */
public static DisplayImageOptions getCircleOption(Integer strokeColor,
        float strokeWidth)
{
    DisplayImageOptions options = new DisplayImageOptions.Builder()
            .
            // 网络图片下载完成之前的预加载的默认图片
            showImageOnLoading(R.mipmap.ic_launcher)
            .
            // 网络图片下载失败后显示该默认图片
            showImageOnFail(R.mipmap.ic_launcher)
            .
            // 图片的质量
            bitmapConfig(Bitmap.Config.RGB_565).cacheInMemory(true)
            .cacheOnDisk(true)
            .displayer(new CircleBitmapDisplayer(strokeColor, strokeWidth))
            .build();
    return options;
}

public CreditsAdapter(@NonNull Context context, @NonNull List<Credit> credits) {
    mContext = context;
    mCredits = credits;

    int color = ColorHelper.getAttributeColor(mContext, android.R.attr.textColorSecondary);
    Drawable drawable = DrawableHelper.getTintedDrawable(
            mContext, R.drawable.ic_toolbar_default_profile, color);

    mOptions = ImageConfig.getRawDefaultImageOptions();
    mOptions.resetViewBeforeLoading(true);
    mOptions.cacheInMemory(true);
    mOptions.cacheOnDisk(true);
    mOptions.showImageForEmptyUri(drawable);
    mOptions.showImageOnFail(drawable);
    mOptions.showImageOnLoading(drawable);
    mOptions.displayer(new CircleBitmapDisplayer());
}

/**
     * 获取配置器
     * @param isCircle
     * @param defaultRes
     * @return
     */
    public DisplayImageOptions getDefaultOptions(boolean isCircle, int defaultRes){
        DisplayImageOptions.Builder builder = new DisplayImageOptions.Builder()
                .cacheInMemory(true)//设置下载的图片是否缓存在内存中
                .cacheOnDisc(true)//设置下载的图片是否缓存在SD卡中
                .considerExifParams(true)  //是否考虑JPEG图像EXIF参数（旋转，翻转）
                .imageScaleType(ImageScaleType.EXACTLY_STRETCHED)//设置图片以如何的编码方式显示
                .bitmapConfig(Bitmap.Config.RGB_565)//设置图片的解码类型:设置为RGB565比起默认的ARGB_8888要节省大量的内存
//                .delayBeforeLoading(100)//载入图片前稍做延时可以提高整体滑动的流畅度
                .resetViewBeforeLoading(true);//设置图片在下载前是否重置，复位
                if(isCircle){
//                    builder.displayer(new RoundedBitmapDisplayer(12));//是否设置为圆角，弧度为多少
                    builder.displayer(new CircleBitmapDisplayer(10));
                }
                if(defaultRes!=0){
                    builder.showImageForEmptyUri(defaultRes)//设置图片Uri为空或是错误的时候显示的图片
//                            .showImageOnLoading(defaultRes) //设置图片在下载期间显示的图片-->应该去掉-会造成ListView中图片闪烁
                            .showImageOnFail(defaultRes);  //设置图片加载/解码过程中错误时候显示的图片
                }
        return builder.build();//构建完成
    }

ImageAdapter(Context context) {
    inflater = LayoutInflater.from(context);

    options = new DisplayImageOptions.Builder()
            .showImageOnLoading(R.drawable.ic_stub)
            .showImageForEmptyUri(R.drawable.ic_empty)
            .showImageOnFail(R.drawable.ic_error)
            .cacheInMemory(true)
            .cacheOnDisk(true)
            .considerExifParams(true)
            .displayer(new CircleBitmapDisplayer(Color.WHITE, 5))
            .build();
}

public WaterfallAdapter(List<String> list) {
    mValues = list;

    options = new DisplayImageOptions.Builder()
            .showImageOnLoading(R.drawable.ic_stub)
            .showImageForEmptyUri(R.drawable.ic_empty)
            .showImageOnFail(R.drawable.ic_error)
            .cacheInMemory(true)
            .cacheOnDisk(true)
            .considerExifParams(true)
            .displayer(new CircleBitmapDisplayer(Color.WHITE, 5))
            .build();
}