Clever Geek Handbook

Why does Android ignore READ_SMS permission?

I am playing around with reading Inbox under Android API 15 and I am stuck with the following problem:

My application only has one activity, the main one being launched by default. It has this onCreate

code

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


        // Create Inbox box URI
        Uri inboxURI = Uri.parse("content://sms/inbox");

        // List required columns
        String[] reqCols = new String[] { "_id", "address", "body" };

        // Get Content Resolver object, which will deal with Content Provider
        ContentResolver cr = getContentResolver();

        // Fetch Inbox SMS Message from Built-in Content Provider
        Cursor c = cr.query(inboxURI, reqCols, null, null, null);

    }

Now that this code is of no use to anything, it just fetches the data and prepares the cursor so that I can scroll through it, it throws the following error:

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.cryptail.stealthsms/com.cryptail.stealthsms.UnlockActivity}: java.lang.SecurityException: Permission Denial: reading com.android.providers.telephony.SmsProvider uri content://sms/inbox from pid=4362, uid=10059 requires android.permission.READ_SMS, or grantUriPermission()

The error occurs on the line with the code Cursor c = cr.query

and strongly recommends that I use the READ_SMS permission.

This is my XML manifest

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


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

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >


        <activity
            android:name=".UnlockActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

You can see the permission is enabled. What could be causing this?

EDIT 28.9.2015 . I did not mention that it was working with Android Emulator in Android studio, specifically Android 6.0 (API 23). Under other emulated devices with different versions of Android (4.4.2) this code works. Maybe a bug in Android 6.0 or the emulator? Are there any changes in A6.0 regarding SMS permissions?

+2


source to share


2 answers


So the problem is, as TDG mentioned, the new permission model in Android M.

This article helped me understand the problem in a clearer way than the android official doc .

Just use



 if(ContextCompat.checkSelfPermission(getBaseContext(), "android.permission.READ_SMS") == PackageManager.PERMISSION_GRANTED) {

before executing any SMS related code and if no permission use

final int REQUEST_CODE_ASK_PERMISSIONS = 123;
ActivityCompat.requestPermissions(UnlockActivity.this, new String[]{"android.permission.READ_SMS"}, REQUEST_CODE_ASK_PERMISSIONS);
+10


source


You can use this code for any resolution. Also declare this permission in your manifest file.



/* code in OnCreate() method */ 

if (ContextCompat.checkSelfPermission(context,
                Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED)
        {
            if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
                    Manifest.permission.SEND_SMS))
            {
                ActivityCompat.requestPermissions(MainActivity.this,
                        new String[] {Manifest.permission.SEND_SMS}, 1);
            }
            else
            {
                ActivityCompat.requestPermissions(MainActivity.this,
                        new String[] {Manifest.permission.SEND_SMS}, 1);
            }

        }
        else
        {
            /* do nothing */
            /* permission is granted */
        }


/* And a method to override */    
@Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        switch (requestCode)
        {
            case 1:
                if (grantResults.length > 0 &&
                        grantResults[0] == PackageManager.PERMISSION_GRANTED)
                {
                    if (ContextCompat.checkSelfPermission(MainActivity.this,
                            Manifest.permission.SEND_SMS) ==  PackageManager.PERMISSION_GRANTED)
                    {
                        Toast.makeText(context, "Permission granted", Toast.LENGTH_SHORT).show();
                    }
                }
                else
                {
                    Toast.makeText(context, "No Permission granted", Toast.LENGTH_SHORT).show();
                }
                break;
        }
    }
+1


source






More articles:


All Articles