#36 runtime permissions for android

app/build.gradle

@@ -19,7 +19,7 @@ android {
     defaultConfig {
         applicationId "nsit.app.com.nsitapp"
         minSdkVersion 14
-        targetSdkVersion 22
+        targetSdkVersion 23
         versionCode 26
         versionName "2.5"
     }
@@ -36,7 +36,7 @@ dependencies {
     compile 'org.lucasr.twowayview:twowayview:0.1.4'
     compile fileTree(include: ['*.jar'], dir: 'libs')
     compile 'com.squareup.okhttp3:okhttp:3.4.1'
-    compile 'com.android.support:appcompat-v7:22.2.0'
+    compile 'com.android.support:appcompat-v7:23.1.1'
     compile 'com.squareup.picasso:picasso:2.5.2'
     compile group: 'org.jsoup', name: 'jsoup', version: '1.8.3'
     compile 'com.google.android.gms:play-services-maps:7.5.0'

app/src/main/java/nsit/app/com/nsitapp/BaseActivity.java

@@ -0,0 +1,28 @@
+package nsit.app.com.nsitapp;
+
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+
+import nsit.app.com.nsitapp.helper.AppPermissionChecker;
+
+/**
+ * Created by prateekjain on 10/31/16.
+ */
+public class BaseActivity extends AppCompatActivity {
+  protected AppPermissionChecker appPermissionChecker;
+
+  @Override
+  protected void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    appPermissionChecker = new AppPermissionChecker(this);
+  }
+
+  @Override
+  public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+    appPermissionChecker.handlePermissionResult(requestCode, permissions, grantResults);
+  }
+
+}

app/src/main/java/nsit/app/com/nsitapp/Hangout_collegeLocations.java

@@ -1,9 +1,10 @@
 package nsit.app.com.nsitapp;
 
+import android.Manifest;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.View;
@@ -25,12 +26,14 @@
 
 import functions.ButtonAnimation;
 import functions.Constant;
+import nsit.app.com.nsitapp.helper.AppPermissionChecker;
 
 /**
  * Created by Sidharth Patro on 21-Jun-15.
  */
-public class Hangout_collegeLocations extends AppCompatActivity implements Constant {
+public class Hangout_collegeLocations extends BaseActivity implements Constant {
 
+    public static final int LOCATION_PERMISSION_REQUEST_CODE = 1;
     private ArrayList<LocationGroup> LocationsGroupsList = new ArrayList<>();
     private ExpandableListView listView;
 
@@ -47,8 +50,8 @@ public void onCreate(Bundle savedInstanceState)
         this.listView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
 
             @Override
-            public boolean onChildClick(ExpandableListView parent, View v,
-                                        int groupPosition, int childPosition, long id) {
+            public boolean onChildClick(ExpandableListView parent, final View v,
+                                        final int groupPosition, final int childPosition, long id) {
                 ButtonAnimation btnAnimation = new ButtonAnimation();
                 btnAnimation.animateButton(v, Hangout_collegeLocations.this);
                 String groupType = LocationsGroupsList.get(groupPosition).GroupType;
@@ -91,6 +94,17 @@ public boolean onChildClick(ExpandableListView parent, View v,
         setTitle("College Hangouts");
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         getSupportActionBar().setHomeButtonEnabled(true);
+        appPermissionChecker.handlePermission(Manifest.permission.ACCESS_FINE_LOCATION, LOCATION_PERMISSION_REQUEST_CODE, new AppPermissionChecker.PermissionRequestCallBack() {
+            @Override
+            public void permissionGranted() {
+                Log.d("DEBUG", "Location permission granted");
+            }
+
+            @Override
+            public void permissionDenied() {
+                Log.d("DEBUG", "Location permission denied");
+            }
+        });
 
 
     }

app/src/main/java/nsit/app/com/nsitapp/helper/AppPermissionChecker.java

@@ -0,0 +1,50 @@
+package nsit.app.com.nsitapp.helper;
+
+import android.app.Activity;
+import android.content.pm.PackageManager;
+import android.os.Build;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
+
+/**
+ * Created by prateekjain on 10/31/16.
+ */
+public class AppPermissionChecker {
+  private int permissionRequestCode;
+  private PermissionRequestCallBack callBack;
+  private Activity activity;
+
+  public AppPermissionChecker(Activity activity) {
+    this.activity = activity;
+  }
+
+  public void handlePermission(String permission, int permissionRequestCode, PermissionRequestCallBack callBack) {
+    this.permissionRequestCode = permissionRequestCode;
+    this.callBack = callBack;
+    if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+      if (ContextCompat.checkSelfPermission(activity, permission) != PackageManager.PERMISSION_GRANTED) {
+        ActivityCompat.requestPermissions(activity, new String[]{permission}, permissionRequestCode);
+      } else {
+        callBack.permissionGranted();
+      }
+    } else {
+      callBack.permissionGranted();
+    }
+  }
+
+  public void handlePermissionResult(int requestCode, String[] permissions, int[] grantResults) {
+    if (requestCode == permissionRequestCode && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+      callBack.permissionGranted();
+    } else {
+      callBack.permissionDenied();
+    }
+
+  }
+
+  public interface PermissionRequestCallBack {
+    void permissionGranted();
+
+    void permissionDenied();
+  }
+
+}