public void setPinContent(boolean pinContent) {
        if (pinContent) {
            mFlag = mFlag | FLAG_PIN_CONTENT;
        } else {
            mFlag = mFlag & ~FLAG_PIN_CONTENT;
        }
    }
It's useful when working with viewpager.

@param disable
common/src/main/java/com/sxjs/common/widget/pulltorefresh/PtrFrameLayout.java