Question

我有一个扩展LinearLayout的自定义视图。视图看起来像进度条，每个点击都会移动一个小图标。更新方法是：

public void setPointerOffset(int mPointerOffset) {
    this.mPointerOffset = mPointerOffset;
    updateSlider();
    invalidate();
    requestLayout();
}
private void updateSlider() {
    PercentFrameLayout.LayoutParams params = (PercentFrameLayout.LayoutParams) mPointer.getLayoutParams();
    PercentLayoutHelper.PercentLayoutInfo info = params.getPercentLayoutInfo();
    if (mPointerOffset < MIN_OFFSET)
        mPointerOffset = MIN_OFFSET;
    if (mPointerOffset > MAX_OFFSET)
        mPointerOffset = MAX_OFFSET;
    float percent = mPointerOffset * 0.01f;
    info.startMarginPercent = percent;
}

此方法是从onClickListener启动的。这在17岁的低api中运行良好，但是至于（25）它根本不起作用。

Answer 1

将布局参数设置为＆＃34; mPointer＆＃34; semms来解决它。

private void updateSlider() {
    PercentFrameLayout.LayoutParams params = (PercentFrameLayout.LayoutParams) mPointer.getLayoutParams();
    PercentLayoutHelper.PercentLayoutInfo info = params.getPercentLayoutInfo();
    if (mPointerOffset < MIN_OFFSET)
        mPointerOffset = MIN_OFFSET;
    if (mPointerOffset > MAX_OFFSET)
        mPointerOffset = MAX_OFFSET;
    float percent = mPointerOffset * 0.01f;
    info.startMarginPercent = percent;
    mPointer.setLayoutParams(params);
}

无效重绘api 25上的视图

1 个答案: