请求互联网许可不起作用

Question

I'm trying to request internet permission in my android app on my android phone using SDK 26. I've tried using the AndroidManifest.xml , I've tried using ActivityCompat.requestPermissions(this, new String[]{ Manifest.permission.INTERNET }, 1); and I've tried different request codes. I've tried this in onCreate and inside a button press event, but still no permissions show up when I go into the App Info.

I'm totally lost as I don't see any reason why this won't work. any Ideas? common problems that I don't know of yet?

andoidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.simplevents">

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

    <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/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Answer 1

Permissions are divided into several protection levels

There are three protection levels that affect third-party apps: normal , signature , and dangerous permissions

INTERNET permission comes in normal protection level and that's why it's not required to ask at runtime

see list here

What is normal and dangerous permission?

Normal :

The permissions which are not sensitive and harmful to users eg. like VIBRATE and INTERNET

Dangerous :

The permissions which are sensitive and harmful like after allowing READ_CONTACTS , The App can misuse your contacts details or allow READ_EXTERNAL_STORAGE can access your SD card data

Answer 2

You don't need special Permission for Internet.

Just Define Permission in Manifest

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

for testing purpose you can check your internet connection add below permission in Android Manifest file. This Permission give you what is state (Status) of your internet connection.

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

Here Test Code you can using check you internet connection. isNetwork function return true if internet service is working otherwise it returns false.

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main)


        if (isNetwork(getApplicationContext())){

        Toast.makeText(getApplicationContext(), "Internet Connected", Toast.LENGTH_SHORT).show()

        } else {

        Toast.makeText(getApplicationContext(), "Internet Is Not Connected", Toast.LENGTH_SHORT).show()
        }
    }


    public boolean isNetwork(Context context) {

        ConnectivityManager cm = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo netInfo = cm.getActiveNetworkInfo();
        if (netInfo != null && netInfo.isConnectedOrConnecting()) {
            return true;
        }
        return false;
    }

}

Answer 3

As I'm not allowed to delete this question any more because other people have already put effort into answering the question, I will explain to you what my error was. I did have the permission for internet access the whole time - so I had a completely different fault in my code, and I misinterpreted the error message and thought it was a permission thing, because the internet permission doesn't show up on the app info screen. It never does, because it's not a 'dangerous' permission, that much I've learned.

To summarize: Getting the permission to establish a connection to the internet on android is as easy as adding the permission in the AndroidManifest.xml .

Answer 4

Internet Permission in Normal permission, This permission allow automatically by Android System.

Only Sensitive Permission like CALL_LOG, SMS etc.. are need Run time Permission.

Try this

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

If you are using mobile data , you need only INTERNET permission but if you using Wi-Fi or other network, you need ACCESS_NETWORK_STATE permission,

Note- Network permission do not need on Runtime permission.