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在我的應用程序中,當我使用UIView動畫切換視圖時,它不顯示任何內容,視圖是黑色的,但我知道我的方法正在調用。我已NSLogged視圖的位置,我打印結果並張貼在下面。視圖不顯示?
我的代碼在下面,但沒有人看到任何錯誤?
-(void)changeView2ToView3 {
NSLog(@"Before, frame= %@", NSStringFromCGRect(view3.view.frame));
[view2.view.superview addSubview:view3.view];
[view3.view setFrame:CGRectMake(0, kHeight, kWidth, kHeight)];
[UIView animateWithDuration:0.75
animations:^{
[view3.view setFrame:CGRectMake(0, 0, kWidth, kHeight)];
}
completion:^(BOOL finished){
[view2.view removeFromSuperview];
}];
NSLog(@"Before, frame= %@", NSStringFromCGRect(view3.view.frame));
}
kHeight和kWidth是屏幕的高度和寬度,它們從不爲0或零。
而且這是從控制檯打印:
2012-02-02 15:58:30.449 App[27578:707] Before, frame= {{0, 0}, {320, 480}}
2012-02-02 15:58:30.452 App[27578:707] Before, frame= {{0, 0}, {320, 480}}
2012-02-02 15:58:36.234 App[27578:707] Before, frame= {{0, 0}, {320, 480}}
2012-02-02 15:58:36.237 App[27578:707] Before, frame= {{0, 0}, {320, 480}}
謝謝!
kWidth和kHeight是屏幕的寬度和高度,它們不是0或零,所以這不是問題:/ – 2012-02-04 22:39:43