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RN日常問(wèn)題匯總1.CFBundleIdentifier", Does Not ExistCommand failed: /usr/libexec/PlistB...
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UIImagePickerController cancel button not showing
最近項(xiàng)目中出現(xiàn) UIImagePickerController的取消按鈕會(huì)莫名其妙的隱藏跟狱，操作步驟是拍照后取消，再選擇照片，這個(gè)時(shí)候選擇照片的導(dǎo)...
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關(guān)于GCD的dispatch_semaphore_t
當(dāng)需要處理資源競(jìng)爭(zhēng)狂魔，可以借用GCD的信號(hào)機(jī)制 dispatch_semaphore_create(long value); 創(chuàng)建一個(gè)信號(hào)資源起意，參...