图像未正确加载到uiimageView中

Question

请检查附件imageImage是否未正确加载到UIImageView 。

 profileCell.currentMsgView.userPicImageView sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@",object.mediaPath]] placeholderImage:[UIImage imageNamed:@"defaultImage"] completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) { }]; 

Answer 1

尝试通过设置内容模式，例如

    profileCell.currentMsgView.userPicImageView.contentMode = UIViewContentModeScaleAspectFit;

并确保您设置了适当的约束。 如果您具有像元大小的图像视图，则您的约束应类似于： top,leading,trailing,bottom

这样可以解决问题。

Answer 2

试试这个简单的演示应用程序只是为了学习：-

ViewController.h代码在这里：-

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
@property (strong, nonatomic) IBOutlet UIImageView *imageOutput;
- (IBAction)btnOutput:(id)sender;

@end

ViewController.m代码在这里：-

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)btnOutput:(id)sender {
    NSString *picUrl = @"http://cdn.wonderfulengineering.com/wp-content/uploads/2016/01/nature-wallpapers-9.jpg";
    NSURL *theUrl = [NSURL URLWithString:picUrl];
    NSData *imageData = [[NSData alloc]initWithContentsOfURL:theUrl];
    _imageOutput.image = [UIImage imageWithData:imageData];
}
@end

用以下内容替换info.plist的整个代码，因为如果不这样做，您将无法访问“ http站点”，因为苹果出于安全原因会阻止http站点（为此，右键单击info.plist并作为源打开）：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>NSAppTransportSecurity</key>
<dict>
  <!--Include to allow all connections (DANGER)-->
  <key>NSAllowsArbitraryLoads</key>
      <true/>
</dict>
    <key>CFBundleDevelopmentRegion</key>
    <string>en</string>
    <key>CFBundleExecutable</key>
    <string>$(EXECUTABLE_NAME)</string>
    <key>CFBundleIdentifier</key>
    <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundleName</key>
    <string>$(PRODUCT_NAME)</string>
    <key>CFBundlePackageType</key>
    <string>APPL</string>
    <key>CFBundleShortVersionString</key>
    <string>1.0</string>
    <key>CFBundleSignature</key>
    <string>????</string>
    <key>CFBundleVersion</key>
    <string>1</string>
    <key>LSRequiresIPhoneOS</key>
    <true/>
    <key>UILaunchStoryboardName</key>
    <string>LaunchScreen</string>
    <key>UIMainStoryboardFile</key>
    <string>Main</string>
    <key>UIRequiredDeviceCapabilities</key>
    <array>
        <string>armv7</string>
    </array>
    <key>UISupportedInterfaceOrientations</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
</dict>
</plist>