更改uiswitch上的text
為要更改text的uiswitch建立ib連接：例如myswitch,在代碼中改變文字：
((uilabel *)[[[[[[self.myswitch subviews] lastobject] subviews] objectatindex:2] subviews] objectatindex:0]).text = @foo;
((uilabel *)[[[[[[self.myswitch subviews] lastobject] subviews] objectatindex:2] subviews] objectatindex:1]).text = @ba在寫代碼時，發(fā)現(xiàn)原來3.1.3下經(jīng)常用的uiview動畫結(jié)束后調(diào)用事件的方法居然不起作用了，摸索了一下，發(fā)現(xiàn)ios4下對uivew的animation處理已經(jīng)有新的方式了，和大家分享一下：
代碼功能：在myview向下移出屏幕的動畫結(jié)束后，觸發(fā)事件再將myview移除掉。
ios4以前的用法：
[uiview beginanimations:@view remove context:nil];
uiview setanimationdelegate:self];
[uiview setanimationdidstopselector:@selector(animationfinish:animationid:finished:context:)];
[uiview setanimationduration:0.3f];
[uiview setanimationcurve:uiviewanimationcurvelinear];
myview.center = cgpointmake(myview.center.x, myview.center.y+480.0);
uiview commitanimations];
- (void)animationfinish:(nsstring *)animationid finished:(nsnumber *)finished context:(void *)context {
if (animationid == @view remove) {
[myview removefromsuperview];
}
}
xcode的document已經(jīng)明確說了setanimationdidstopselector ：”use of this method is discouraged in iphone os 4.0 and later. you should use the block-based animation methods instead.“，看來這種方法是行不通了，反正在我的模擬器上是不行了，以下是ios4中的實現(xiàn)方法：
[uiview animatewithduration:0.3 delay:0 options:uiviewanimationoptioncurvelinear
animations:^{
settingview.center = cgpointmake(myview.center.x, myview.center.y+480.0);
}
completion:^(bool finished){
if (finished){
[myview removefromsuperview];
}
}
];
看起來更加簡潔方便了，但邏輯似乎沒有原來好理解了。r;