图片的大小展示问题

[Voidruiyi]

给控件更新宽高 是在onFinalImageSet，加载成功后request
1.假如说我加载网络图片识别，给控件展示加载识别默认图，此时控件大小不易控制，不是我相要的结果
2.加载成功后如果photoDraweeView.update(imageInfo.getWidth(), imageInfo.getHeight());我发现有的图片左右会多出大概40dp的距离
3.通过查看PhotoView代码，发现它的update大小未设置值，内部是得到与IAttacher 绑定的imageView,用iamgeview的测量宽高，即通过计算 加载识别后图片的宽高 去重新调整宽高

mImgView.setImageResource(R.drawable.icon_load_fail);
mAttacher.update();
------update() public void update() {
ImageView imageView = getImageView();
if (null != imageView) {
if (mZoomEnabled) {
// Make sure we using MATRIX Scale Type
setImageViewScaleTypeMatrix(imageView);
// Update the base matrix using the current drawable
updateBaseMatrix(imageView.getDrawable());
} else {
// Reset the Matrix...
resetMatrix();
}
}
}
------resetMatrix private void resetMatrix() {
mSuppMatrix.reset();
setImageViewMatrix(getDrawMatrix());
checkMatrixBounds();
}

------ getDrawMatrix public Matrix getDrawMatrix() {
mDrawMatrix.set(mBaseMatrix);
mDrawMatrix.postConcat(mSuppMatrix);
return mDrawMatrix;
}
------ checkMatrixBounds private boolean checkMatrixBounds() {
final ImageView imageView = getImageView();
if (null == imageView) {
return false;
}

    final RectF rect = getDisplayRect(getDrawMatrix());
    if (null == rect) {
        return false;
    }

    final float height = rect.height(), width = rect.width();
    float deltaX = 0, deltaY = 0;

    final int viewHeight = getImageViewHeight(imageView);
    ..
    final int viewWidth = getImageViewWidth(imageView);
   ..
    // Finally actually translate the matrix
    mSuppMatrix.postTranslate(deltaX, deltaY);
    return true;
}