iOS 无弹框换图标，直接用就可以了
需求：换图标，用户无感
1.分析：
对于iOS，是开发了API可以换图标，但是有规定的，就是你要换的图标是要在APP里面内置的，也就是说你要换的APPicon，是提前放在APP 包里面的，具体后面会有解释，好吧直接上代码吧。
2.代码实现过程
(1)Info.plist 配置，直接添加（以下代码直接复制到info.plist中）：
<?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>CFBundleAlternateIcons</key>
<dict>
<key>MayOneIcon</key>
<dict>
<key>CFBundleIconFiles</key>
<array>
<string>MayOneIcon</string>
</array>
<key>UIPrerenderedIcon</key>
<false/>
</dict>
</dict>
<key>UINewsstandIcon</key>
<dict>
<key>CFBundleIconFiles</key>
<array>
<string></string>
</array>
<key>UINewsstandBindingEdge</key>
<string>UINewsstandBindingEdgeLeft</string>
<key>UINewsstandBindingType</key>
<string>UINewsstandBindingTypeMagazine</string>
</dict>
</dict>
</plist>（2）导入预制的icon，120*120的就行了，然后名字要和plist里面的对应，我这里用的是MayOneIcon；（注）这个名字在plist里面有俩个地方需要修改。
（3）在需要调用改图标的地方写入换icon的代码：
#pragma mark ExchengeIconMethod
/* 直接调用此方法，传入数据为iconName,也就是后台给你要换的图标
默认传的是@"DefaultIcon"
*/
+ (void)chengeAppicon:(NSString*)iconNameNew{
if (iconNameNew.length == 0) {
return;
}
if ([UIApplication sharedApplication].supportsAlternateIcons) {
NSLog(@"you canExchange");
}else{
NSLog(@"you can not Exchange");
return;
}
NSString * iconname = [[UIApplication sharedApplication]alternateIconName];
if ((!iconname&&[iconNameNew isEqualToString:@"DefaultIcon"]) || [iconname isEqualToString:iconNameNew]) {
return;
}
[self exchangealterMethod];
if ( [iconNameNew isEqualToString:@"DefaultIcon"]) {
[[UIApplication sharedApplication]setAlternateIconName:nil completionHandler:^(NSError * _Nullable error) {
if (error) {
NSLog(@"error");
}else
NSLog(@"icon name:%@",iconname);
}];
}else{
[[UIApplication sharedApplication]setAlternateIconName:iconNameNew completionHandler:^(NSError * _Nullable error) {
if (error) {
NSLog(@"error");
}else
NSLog(@"icon name:%@",iconname);
}];
}
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self exchangealterMethod];
});
}
+ (void)dy_presentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion {
if ([viewControllerToPresent isKindOfClass:[UIAlertController class]]) {
NSLog(@"title : %@",((UIAlertController *)viewControllerToPresent).title);
NSLog(@"message : %@",((UIAlertController *)viewControllerToPresent).message);
UIAlertController *alertController = (UIAlertController *)viewControllerToPresent;
if (alertController.title == nil && alertController.message == nil) {
return;
} else {
[self dy_presentViewController:viewControllerToPresent animated:flag completion:completion];
return;
}
}
[self dy_presentViewController:viewControllerToPresent animated:flag completion:completion];
}
+ (void)exchangealterMethod{
Method presentM = class_getInstanceMethod(UIViewController.class, @selector(presentViewController:animated:completion:));
Method presentSwizzlingM = class_getInstanceMethod(self.class, @selector(dy_presentViewController:animated:completion:));
method_exchangeImplementations(presentM, presentSwizzlingM);
}本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
原始发表：2018年07月13日，如有侵权请联系 cloudcommunity@tencent.com 删除
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