if (num == 0) { //提示 Comparison between pointer and integer ('id _Nullable' and 'int')
轉換下就好了 if ([num intValue] == 0) {
if (num == 0) { //提示 Comparison between pointer and integer ('id _Nullable' and 'int')
轉換下就好了 if ([num intValue] == 0) {
錯誤提示是:installprohibited -402636802這個的時候,可以將 設置-通用-訪問限制關閉
iOS模擬器目錄:Users/your_user_name/Library/Application Support/iPhone Simulator/iOS_version/