Android Studio 无法识别 AndroidManifest 中的使用权限

Question

I am having problem where it seems my Android Studio is not recognizing the uses-permission in my AndroidManifest.xml file. In my main activity, when I try to call for some function that requires INTERNET and ACCESS_NETWORK_STATE, the activity seems to not recognize that I have already put the permission in the AndroidManifest.xml file.

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

The following is the method that calls for the ACCESS_NETWORK_STATE. The part when calling

public boolean isNetworkAvailable(Context context) {
        boolean isOnline = false;
        ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        try {
            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
                NetworkCapabilities capabilities = manager.getNetworkCapabilities(manager.getActiveNetwork());
                isOnline = capabilities != null && capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED);
            } else {
                NetworkInfo activeNetworkInfo = manager.getActiveNetworkInfo();
                isOnline = activeNetworkInfo != null && activeNetworkInfo.isConnectedOrConnecting();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return isOnline;
    }

private void showConnectDialog() {
        Log.d(TAG, "showConnectDialog: trying to show the connect dialog");
        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this,R.style.MyAlertDialogStyle);
        builder.setMessage("Please connect to the internet to proceed further")
                .setCancelable(false)
                .setPositiveButton("Connect", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int i) {
                        startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));
                    }
                });
        builder.show();
    }

In my main activity oncreate:

if (!isNetworkAvailable(MainActivity.this)){
            showConnectDialog();
        }
        if (isServicesOK()) {
            init();
        }

MobileAds.initialize(this, new OnInitializationCompleteListener() {
            @Override
            public void onInitializationComplete(InitializationStatus initializationStatus) {
            }
        });
        AdView mAdView = findViewById(R.id.adViewMain);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);

You can see in the images (attached below) show that I have an error in my isNetworkAvailable method, and also my Google AdMob. If I hover my mouse on the error, Android Studio mentioned that I need to add ACCESS_NETWORK_STATE permission for the isNetworkAvailable method, and INTERNET permission for the Google AdMob. But I already have them in my AndroidManifest.xml. Am I missing anything else? Thank you very much for your help.

Error in Google AdMob

Error in isNetworkAvailable method

Answer 1

Something might be wrong in your AndroidManifest.xml file. When you open the AndroidManifest.xml, click on the "Merged Manifest" button. It may show you if you have a problem in it.

Answer 2

I tried your code on my own and it runs successfully. ;)

package com.mansi.stackissue;

import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkCapabilities;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import com.google.android.gms.ads.MobileAds;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (!isNetworkAvailable(MainActivity.this)){
            showConnectDialog();
        }


        MobileAds.initialize(this, initializationStatus -> {
        });
        AdView mAdView = findViewById(R.id.adViewMain);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);
    }

    public boolean isNetworkAvailable(Context context) {
        boolean isOnline = false;
        ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        try {
            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
                NetworkCapabilities capabilities = manager.getNetworkCapabilities(manager.getActiveNetwork());
                isOnline = capabilities != null && capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED);
            } else {
                NetworkInfo activeNetworkInfo = manager.getActiveNetworkInfo();
                isOnline = activeNetworkInfo != null && activeNetworkInfo.isConnectedOrConnecting();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return isOnline;
    }

    private void showConnectDialog() {
        Log.d("TAG", "showConnectDialog: trying to show the connect dialog");
        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this,R.style.Theme_AppCompat_DayNight_Dialog_Alert);
        builder.setMessage("Please connect to the internet to proceed further")
                .setCancelable(false)
                .setPositiveButton("Connect", (dialog, i) -> startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS)));
        builder.show();
    }
}

Manifest File (Add your APP ID)

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mansi.stackissue">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.StackIssue">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <meta-data
        android:name="com.google.android.gms.ads.APPLICATION_ID"
        android:value="ca-app-pub-**********"/>
</application>

Layout file

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

<com.google.android.gms.ads.AdView
    android:id="@+id/adViewMain"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    ads:adSize="BANNER"
    ads:adUnitId="YOUR_UNIT_ID" />

</LinearLayout>

Please clean your project and re-build again. It will works. Happy Coding!!