Fresco中文说明：http://www.fresco-cn.org/
Fresco项目GitHub地址：https://github.com/facebook/fresco
1.DraweeView不支持wrap_content
所以动态适应需要拿到高度
解决方法：
public static void setControllerListener(final SimpleDraweeView simpleDraweeView, String imagePath, final int imageWidth) {
final ViewGroup.LayoutParams layoutParams = simpleDraweeView.getLayoutParams();
ControllerListener controllerListener = new BaseControllerListener<ImageInfo>() {
@Override
public void onFinalImageSet(String id, @Nullable ImageInfo imageInfo, @Nullable Animatable anim) {
if (imageInfo == null) {
return;
}
int height = imageInfo.getHeight();
int width = imageInfo.getWidth();
layoutParams.width = imageWidth;
layoutParams.height = (int) ((float) (imageWidth * height) / (float) width);
simpleDraweeView.setLayoutParams(layoutParams);
}
@Override
public void onIntermediateImageSet(String id, @Nullable ImageInfo imageInfo) {
Log.d("TAG", "Intermediate image received");
}
@Override
public void onFailure(String id, Throwable throwable) {
throwable.printStackTrace();
}
};
DraweeController controller = Fresco.newDraweeControllerBuilder().setControllerListener(controllerListener).setUri(Uri.parse(imagePath)).build();
simpleDraweeView.setController(controller);
}
getScreenWidth()
public int getScreenWidth() {
WindowManager wm = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(outMetrics);
return outMetrics.widthPixels;
}
注意： 测试后发现使用的时候 如果 layout_width="match_parent"
要计算上 parent的layout_margin 把getScreenWidth()的宽度减去layout_margin。
2.圆角不显示
按部就班填完属性却发现SimpleDraweeView没有显示出来圆角。
解决办法：
请仔细看一下 命名空间：
xmlns:fresco="http://schemas.android.com/tools"
改为
xmlns:fresco="http://schemas.android.com/apk/res-auto"
3.代码动态添加本地资源一般没有问题，网络图片不显示，因为 没有确定宽高，
所以要 加上 宽高，
SimpleDraweeView head = new SimpleDraweeView(mContext);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(100,100);
head.setLayoutParams(lp);