title: checking for an explicit permission?
body: <blockquote>
    <p>in my code the permission log will be display but the phone number is not visible in toast
    <strong>how to get simcard number in the toast message with the use of explicit permission</strong></p>
  </blockquote>
  
  <pre><code>public class MainActivity extends AppCompatActivity {
  String TAG = "PhoneActivityTAG";
  Activity activity = MainActivity.this;
  String wantPermission = Manifest.permission.READ_PHONE_STATE;
  private static final int PERMISSION_REQUEST_CODE = 1;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      if (!checkPermission(wantPermission)) {
          requestPermission(wantPermission);
      } else {
          Log.d(TAG, "Phone number: " + getPhone());
      }
  
  }
  
  private String getPhone() {
      TelephonyManager phoneMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
      if (ActivityCompat.checkSelfPermission(activity, wantPermission) != PackageManager.PERMISSION_GRANTED) {
          Toast.makeText(this, "my phone no is:-" + phoneMgr,Toast.LENGTH_LONG).show();
      }
      return phoneMgr.getLine1Number();
  }
  
  private void requestPermission(String permission){
      if (ActivityCompat.shouldShowRequestPermissionRationale(activity, permission)){
          Toast.makeText(activity, "Phone state permission allows us to get phone number. Please allow it for additional functionality.", Toast.LENGTH_LONG).show();
      }
      ActivityCompat.requestPermissions(activity, new String[]{permission},PERMISSION_REQUEST_CODE);
  }
  
  @Override
  public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
      switch (requestCode) {
          case PERMISSION_REQUEST_CODE:
              if (grantResults.length &gt; 0 &amp;&amp; grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                  Log.d(TAG, "Phone number: " + getPhone());
              } else {
                  Toast.makeText(activity,"Permission Denied. We can't get phone number.", Toast.LENGTH_LONG).show();
              }
              break;
      }
  }
  
  private boolean checkPermission(String permission){
      if (Build.VERSION.SDK_INT &gt;= 23) {
          int result = ContextCompat.checkSelfPermission(activity, permission);
          return result == PackageManager.PERMISSION_GRANTED;
      } else {
          return true;
      }
  }
  }
  </code></pre>
  
  <p>please help me<br>
  how can i get phone number in the display toast?</p>