react-native-navigation的迁移库

Android Specific Use Cases

TOC

Activity Lifecycle and onActivityResult

In order to listen to activity lifecycle callbacks, set ActivityCallback in MainApplication.onCreate as follows:

public class MainApplication extends NavigationApplication {
    @Override
    public void onCreate() {
        super.onCreate();
        setActivityCallbacks(new ActivityCallbacks() {
            @Override
            public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
                
            }

            @Override
            public void onActivityStarted(Activity activity) {
                
            }

            @Override
            public void onActivityResumed(Activity activity) {
                
            }

            @Override
            public void onActivityPaused(Activity activity) {
                
            }

            @Override
            public void onActivityStopped(Activity activity) {
                
            }

            @Override
            public void onActivityResult(int requestCode, int resultCode, Intent data) {
                
            }

            @Override
            public void onActivityDestroyed(Activity activity) {
                
            }
        });
    }
}

Adjusting soft input mode

public class MyApplication extends NavigationApplication {
    @Override
    public void onCreate() {
        registerActivityLifecycleCallbacks(new LifecycleCallbacks() {
            @Override
            public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
                activity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
            }
        });
    }
}

Why overriding these methods in `MainActivity` won’t work

MainActivity extends SplashActiviy which is used to start the react context. Once react is up and running MainActivity is stopped and another activity takes over to run our app: NavigationActivity. Due to this design, there’s usually no point in overriding lifecycle callbacks in MainActivity.

Splash screen

Override getSplashLayout or createSplashLayout in MainActivity to provide a splash layout which will be displayed while Js context initialises.

Collapsing React header - Android only

A screen can have a header, either an image or a react component, that collapses as the screen is scrolled.

Collapsing react view

export default class CollapsingReactViewScreen extends Component {
static navigatorStyle = {
    navBarHideOnScroll: false,
    navBarBackgroundColor: '#4dbce9', // This will be the TitleBars color when the react view is hidden and collapsed
    collapsingToolBarComponent: 'example.header',
    navBarTranslucent: true, // Optional, sets a translucent dark background to the TitleBar. Useful when displaying bright colored header to emphasize the title and buttons in the TitleBar
    showTitleWhenExpended: false, // default: true. Show the screens title only when the toolbar is collapsed
    collapsingToolBarCollapsedColor: 'green', // optional. The TitleBar (navBar) color in collapsed state
    collapsingToolBarExpendedColor: 'red' // optional. The TitleBar (navBar) color in expended state
  };
}

Collapsing react view with top tabs

Note: example.header represents a component that’s registered as a screen:

import Header  from './Header';
Navigation.registerComponent('example.header', () => Header);

export default class CollapsingReactViewTopTabsScreen extends Component {
  static navigatorStyle = {
    navBarHideOnScroll: false, // false, since we collapse the TopBar and the TitleBar remains visible with the top tabs
    topBarCollapseOnScroll: true,
    navBarBackgroundColor: '#4dbce9', // This will be the TitleBar's color when the react view is hidden and collapsed
    collapsingToolBarComponent: 'example.header', // id used to register the component
    expendCollapsingToolBarOnTopTabChange: false, // Don't expend the TopBar when selected TopTab changes
    collapsingToolBarCollapsedColor: '#4dbce9' // Optional, use this property with navBarTranslucent: true to animate between translucent and solid color title bar color
  };
}

Specify topTab in the screen object you use when starting your app:

Navigation.startSingleScreenApp({
    screen: {
    screen: 'example.collapsingReactViewTopTabsScreen',
    title: 'Collapsing React TopTabs View',
    topTabs: [
      {
        screenId: 'example.ListScreen',
        icon: require('../img/list.png')
      },
      {
        screenId: 'example.secondTabScreen',
        icon: require('../img/list.png')
      }
    ]
});

Reloading from terminal

You can easily reload your app from terminal using adb shell am broadcast -a react.native.RELOAD. This is particularly useful when debugging on device.

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