小编Jea*_*vie的帖子

我试过在我的应用程序中使用BottomNavigationView.

当我单击图标片段时,正确显示片段,但图标在选择时不会更改其颜色,第一个片段的图标保持彩色.它看起来像我选择的任何片段

我做错了什么或者所选片段的图标颜色是单独调整的吗？

我的MainActivity:

public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {

    private Toolbar toolbar;

    public static FloatingActionButton addDeadline;
    BottomNavigationView bottomNavigationView;
    FrameLayout frameLayout;

    private HomeFragment homeFragment;
    private RecyclerViewFragment recyclerViewFragment;
    private HistoryFragment historyFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_drawer);

        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);// language configuration
        String lang = getResources().getConfiguration().locale.getDisplayLanguage(Locale.CHINESE);
        Locale locale = new Locale(lang);
        Locale.setDefault(locale);
        Configuration config = new Configuration();
        config.locale = locale;
        getBaseContext().getResources().updateConfiguration(config, null);

        toolbar = findViewById(R.id.toolbar_main);
        setSupportActionBar(toolbar);

        homeFragment = new HomeFragment();
        recyclerViewFragment = new …

我正在尝试将GCDAsyncSocket实现到 mac os x (Mojave 10.14.3) 应用程序以侦听来自 localhost:port 的数据。

问题是无论我选择哪个端口我总是会收到此错误：

Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
UserInfo={NSLocalizedDescription=Operation not permitted, 
NSLocalizedFailureReason=Error in bind() function}

我已经尝试过这个，但没有成功。

这是我在AppDelegate.mm中的实现：

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
    listenSocket = [[GCDAsyncSocket alloc] initWithDelegate:(id<GCDAsyncSocketDelegate>) self delegateQueue:dispatch_get_main_queue()];
    connectedSockets = [[NSMutableArray alloc] initWithCapacity:1];
    isRunning = NO;
    NSError *err = nil;
    if (![listenSocket connectToHost:@"localhost" onPort:12345 error:&err]){
        NSLog(@"I goofed: %@", err);
    }
}

-(void)getData{
    if(!isRunning)
    {
        int port = 12345;
        if(port < 0 || port > 65535)
        {
            port …