小编Kis*_*ela的帖子

React Native移动应用程序在每次点击时都非常慢.我正在使用react本机v0.40.0,以下是我的项目的依赖项.

{
    "analytics-react-native": "^1.1.0",
    "apisauce": "^0.7.0",
    "babel-preset-es2015": "^6.18.0",
    "es6-promise": "^4.0.5",
    "flow-bin": "^0.36.0",
    "geolib": "^2.0.22",
    "immutable": "^3.8.1",
    "intl": "^1.2.5",
    "isomorphic-fetch": "^2.2.1",
    "lodash": "^4.17.4",
    "lodash.range": "^3.2.0",
    "prop-types": "^15.5.10",
    "raven-js": "^3.13.1",
    "react": "^15.4.2",
    "react-native": "^0.40.0",
    "react-native-apple-healthkit-rn0.40": "^0.3.2",
    "react-native-blur": "^2.0.0",
    "react-native-button": "^1.7.1",
    "react-native-checkbox": "^2.0.0",
    "react-native-code-push": "^1.17.3-beta",
    "react-native-datepicker": "^1.4.4",
    "react-native-device-info": "^0.10.1",
    "react-native-easy-toast": "^1.0.6",
    "react-native-fbsdk": "^0.5.0",
    "react-native-geocoder": "^0.4.5",
    "react-native-gifted-chat": "^0.1.3",
    "react-native-global-props": "^1.1.1",
    "react-native-image-crop-picker": "^0.15.1",
    "react-native-image-picker": "^0.25.1",
    "react-native-image-slider": "^1.1.5",
    "react-native-keyboard-aware-scroll-view": "^0.2.7",
    "react-native-maps": "0.15.2",
    "react-native-modal-dropdown": "^0.4.4",
    "react-native-popup-menu": "^0.7.2",
    "react-native-push-notification": "^2.2.1",
    "react-native-radio-buttons": "^0.14.0",
    "react-native-router-flux": …

如何在Android设备中检测电池充电速度？我可以使用以下代码检测电池状态.但不是充电速度.

IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_BATTERY_CHANGED);
BatteryChangeReceiver receiver = new BatteryChangeReceiver(subscriber);
registerReceiver(receiver, filter);


public class BatteryChangeReceiver extends BroadcastReceiver {

    @Override public void onReceive(Context context, Intent intent) {
              // here I get all battery status.
    }
  }

我也提到这个,这个和这个但是找不到检查充电速度的方法.

有一个应用程序(安培)显示充电速度. 我怎样才能做到这一点？

提前致谢.

我正在使用MPAndroidChart库.在BarChart默认情况下,所有条形图都是垂直的(自下而上),如何在水平方向显示它？

在React-Native中使用React-Navigation我有一个像这样的Tabnavigator:

const testScreenNavigator = TabNavigator({
    Tab1: { screen: Tab1Screen },
    Tab2: { screen: Tab2Screen },
    Tab3: { screen: Tab3Screen },
});
testScreenNavigator.navigationOptions = {
    title: 'MY TITLE',
    header: {
        titleStyle:{
        },
        style:{
// how to set the options?
        },
    }  
}

现在我想做两件事:

1. 设置Android中的Tabs的backgroundColor:'red'(不是iOS底部标签)
2. 在Tab1旁边有一个徽章:例如

Tab1(2)| Tab2 | TAB3

问候