React-Native:无法从我的 android 应用程序打开设备设置

问题描述

我正在使用 React-Native (^0.35.0) 来制作 Android 应用程序.在某些情况下，我需要检查互联网连接是否存在.如果没有互联网连接，那么我需要显示一个按钮来打开设备设置(用户可以通过该按钮启用他的连接).

I'm using React-Native (^0.35.0) for making Android application. There is scenario where I need to check whether internet connectivity is present or not. If there is no internet connectivity then I need show a button which will open device settings (through which user can enable his connectivity).

我正在使用 react-native 提供的 Linking 库.

I'm Using Linking library provided by react-native.

我正在尝试以下方式:

componentWillMount(){
    Linking.canOpenURL('app-settings:')
      .then(supported => {
        if (!supported) {
          console.log('Can\'t handle url: ' + url);
       } else {
       return Linking.openURL('app-settings:');
      }
  }).catch(err => console.error('An error occurred', err));
}

然后上面的代码给出-控制台无法处理 url:app-settings:

then above code gives- console Can't handle url:app-settings:

当我尝试以下操作时:

componentWillMount(){
    Linking.canOpenURL('app-settings:')
      .then(supported => {
        return Linking.openURL('app-settings:');
      }).catch(err => console.error('An error occurred', err));
    }

以上代码给出 - 错误:无法打开 URL 'app-settings:': 没有找到处理 Intent { act=android.intent.action.VIEW dat=app-settings: flg=0x10000000 }

这里有什么我遗漏的吗?或者是否需要更改任何其他文件，例如 AndroidMainfest.xml、MainActivity.java 等.

Is there anything that I am missing here? or Is there is need to change in any other file like AndroidMainfest.xml, MainActivity.java, etc..

推荐答案

我使用了相同的步骤来打开设备网络运营商设置.以上步骤很有帮助.

I have used the same steps for opening device network operator settings. The steps above are quite helpful.

这是我的代码.

package com.<projectname>.opensettings;

import android.app.Activity;
import android.content.Intent;

import com.facebook.react.bridge.Callback;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactMethod;
import com.facebook.react.bridge.ReactContextBaseJavaModule;

public class OpenSettingsModule extends ReactContextBaseJavaModule {

  @Override
  public String getName() {
    /**
     * return the string name of the NativeModule which represents this class in JavaScript
     * In JS access this module through React.NativeModules.OpenSettings
     */
    return "OpenSettings";
  }

  @ReactMethod
  public void openNetworkSettings(Callback cb) {
    Activity currentActivity = getCurrentActivity();

    if (currentActivity == null) {
      cb.invoke(false);
      return;
    }

    try {
      currentActivity.startActivity(new Intent(android.provider.Settings.ACTION_SETTINGS));
      cb.invoke(true);
    } catch (Exception e) {
      cb.invoke(e.getMessage());
    }
  }


  /*This is for open location Settings*/
  @ReactMethod
  public void openLocationSettings(Callback cb) {
    Activity currentActivity = getCurrentActivity();

    if (currentActivity == null) {
      cb.invoke(false);
      return;
    }

    try {
      currentActivity.startActivity(new Intent(android.provider.Settings.ACTION_NETWORK_OPERATOR_SETTINGS));
      cb.invoke(true);
    } catch (Exception e) {
      cb.invoke(e.getMessage());
    }
  }

  /* constructor */
  public OpenSettingsModule(ReactApplicationContext reactContext) {
    super(reactContext);
  }
}

您需要做的就是将常量(如 ACTION_NETWORK_OPERATOR_SETTINGS)放在上面的代码中，然后创建自己的函数，就像上面创建的函数一样，即 openNetworkSettings.其他步骤 4、5、6 相同.

All you need to do is just put the constant(like ACTION_NETWORK_OPERATOR_SETTINGS) in above code and create your own function like one which is created above i.e. openNetworkSettings. Other steps 4, 5 and 6 are same.

以下是常量列表:https://developer.android.com/reference/android/provider/Settings.html

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