解雇键盘后如何显示popover

Question

_momVC = [[MOMViewController alloc] initWithNibName：@“MOMViewController”bundle：nil];     _momVC.contents = encodedString;     _momVC.delegate = self;     _momVC.preferredContentSize = CGSizeMake（self.view.frame.size.width，90）;

function moveObj1(){
    left = parseInt(imgObjPurple.style.left, 10);
    moveRightDown = 300;
    if (parseInt(screen.height) + moveRightDown >= left) {
        imgObjPurple.style.left = (left + 4) + 'px';
        imgObjPurple.style.top = (parseInt(imgObjPurple.style.top) + downValue) + 'px';
        imgObjPurple.style.display = 'block';
        animate = setTimeout(function () {
            moveObj1();
       }, 15);
    }
}

function moveObj2() {
    moveRightDown = 300;
    left1 = parseInt(imgObjBlue.style.left, 10);
    if (parseInt(screen.height) + moveRightDown >= left1) {
        imgObjBlue.style.left = (left1 + 4) + 'px';
        imgObjBlue.style.top = (parseInt(imgObjBlue.style.top) + downValue) + 'px';
        imgObjBlue.style.display = 'block';
        animate = setTimeout(function () {
            moveObj2();
     }, 15);
 }
function move(){
    moveObj1();
    setTimeout(function(){
        moveObj2();
    });
}