Read, Feel and Write

contentMode 設AspectFit 寬比高長 [ self . picImageView sd_setImageWithURL :[ NSURL URLWithString :url] placeholderImage :[ UIImage imageNamed : @"pic_offer_n" ] completed :^( UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {                          double width = image. size . width ;             double height = image. size . height ;             double apect = width/height;             double imageViewWidth = weakSelf. picImageView . frame . size . width ;             double nHeight = imageViewWidth /  apect;             [weakSelf. picImageView . heightAnchor constraintEqualToConstant :nHeight]. active = YES ;                      }]; 設定 height 的constraint，重設height

Android 官方文件 https://developer.android.com/reference/android/hardware/fingerprint/FingerprintManager https://developer.android.com/reference/android/hardware/biometrics/BiometricPrompt Demo https://www.jianshu.com/p/1eae12582a31 https://tpu.thinkpower.com.tw/tpu/File/html/201712/20171219171112_f.html?f=3dj6j8kd38895ksgtdddd93865jhr9sn3rqkh https://xnfood.com.tw/android-fingerprintmanager-api/