init

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+  compileSdkVersion 25
+  buildToolsVersion "26.0.0"
+  defaultConfig {
+    applicationId "com.rishabh.socialgrub"
+    minSdkVersion 15
+    targetSdkVersion 25
+    versionCode 1
+    versionName "1.0"
+    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+  }
+  buildTypes {
+    release {
+      minifyEnabled false
+      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+    }
+  }
+}
+
+dependencies {
+  compile fileTree(dir: 'libs', include: ['*.jar'])
+  androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    exclude group: 'com.android.support', module: 'support-annotations'
+  })
+  compile 'com.android.support:appcompat-v7:25.3.1'
+  compile 'com.android.support:design:25.3.1'
+  testCompile 'junit:junit:4.12'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /home/rishabh/Android/Sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

app/src/androidTest/java/com/rishabh/socialgrub/ExampleInstrumentedTest.java

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+package com.rishabh.socialgrub;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class) public class ExampleInstrumentedTest {
+  @Test public void useAppContext() throws Exception {
+    // Context of the app under test.
+    Context appContext = InstrumentationRegistry.getTargetContext();
+
+    assertEquals("com.rishabh.socialgrub", appContext.getPackageName());
+  }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest package="github.nisrulz.tablayout"
+          xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        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>

app/src/main/java/com/rishabh/socialgrub/MainActivity.java

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+package com.rishabh.socialgrub;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.design.widget.NavigationView;
+import android.support.design.widget.TabLayout;
+import android.support.v4.view.ViewPager;
+import android.support.v4.widget.DrawerLayout;
+import android.support.v7.app.ActionBarDrawerToggle;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.MenuItem;
+import com.rishabh.socialgrub.adaptor.TabsPagerAdapter;
+import github.nisrulz.tablayout.R;
+
+public class MainActivity extends AppCompatActivity {
+
+    Toolbar toolbar;
+    TabLayout tabLayout;
+    private ViewPager viewPager;
+    private TabsPagerAdapter mAdapter;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        initNavDrawerToggel();
+    }
+
+    private void initNavDrawerToggel() {
+        toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        //toolbar.setTitle("InstaGrabber");
+
+        // Initilization
+        viewPager = (ViewPager) findViewById(R.id.pager);
+
+
+        mAdapter =  new TabsPagerAdapter(getSupportFragmentManager());
+        viewPager.setAdapter(mAdapter);
+
+        tabLayout = (TabLayout) findViewById(R.id.tab_layout);
+        tabLayout.addTab(tabLayout.newTab().setText("Facebook"));
+        tabLayout.addTab(tabLayout.newTab().setText("Instagram"));
+        tabLayout.addTab(tabLayout.newTab().setText("Twitter"));
+
+        tabLayout.setupWithViewPager(viewPager);
+        getSupportActionBar().setHomeButtonEnabled(true);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+    }
+
+}

app/src/main/java/com/rishabh/socialgrub/Utilities.java

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+package com.rishabh.socialgrub;
+
+import android.Manifest;
+import android.annotation.TargetApi;
+import android.app.Activity;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.pm.PackageManager;
+import android.os.Build;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
+import android.support.v7.app.AlertDialog;
+
+/**
+ * Created by rishabh on 25/2/17.
+ */
+
+public class Utilities {
+
+  public static final int MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 123;
+
+  @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
+  public static boolean checkPermission(final Context context) {
+    int currentAPIVersion = Build.VERSION.SDK_INT;
+    if (currentAPIVersion >= android.os.Build.VERSION_CODES.M) {
+      if (ContextCompat.checkSelfPermission(context, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
+        if (ActivityCompat.shouldShowRequestPermissionRationale((Activity) context, Manifest.permission.READ_EXTERNAL_STORAGE)) {
+          AlertDialog.Builder alertBuilder = new AlertDialog.Builder(context);
+          alertBuilder.setCancelable(true);
+          alertBuilder.setTitle("Permission necessary");
+          alertBuilder.setMessage("External storage permission is necessary");
+          alertBuilder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
+            @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
+            public void onClick(DialogInterface dialog, int which) {
+              ActivityCompat.requestPermissions((Activity) context, new String[]{ Manifest.permission.READ_EXTERNAL_STORAGE}, MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
+            }
+          });
+          AlertDialog alert = alertBuilder.create();
+          alert.show();
+        } else {
+          ActivityCompat.requestPermissions((Activity) context, new String[]{ Manifest.permission.READ_EXTERNAL_STORAGE}, MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
+        }
+        return false;
+      } else {
+        return true;
+      }
+    } else {
+      return true;
+    }
+  }
+
+  // check permission utility
+  public static int REQUEST = 100;
+
+  public static boolean getCameraPermission(Activity activity) {
+    if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
+      ActivityCompat.requestPermissions(activity, new String[]{ Manifest.permission.CAMERA},
+          REQUEST);
+    } else {
+      return true;
+    }
+    return false;
+  }
+
+  public static boolean getStoragePermission(Activity activity) {
+    if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED || ActivityCompat
+        .checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
+      ActivityCompat.requestPermissions(activity, new String[]{ Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE},
+          REQUEST);
+    } else {
+      return true;
+    }
+    return false;
+  }
+
+
+
+  public static boolean getLocationPermission(Activity activity) {
+    if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED || ActivityCompat
+        .checkSelfPermission(activity, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
+      ActivityCompat.requestPermissions(activity, new String[]{ Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION},
+          REQUEST);
+    } else {
+      return true;
+    }
+    return false;
+  }
+
+}

app/src/main/java/com/rishabh/socialgrub/adaptor/TabsPagerAdapter.java

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+package com.rishabh.socialgrub.adaptor;
+
+import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentStatePagerAdapter;
+import android.util.SparseArray;
+import android.view.ViewGroup;
+import com.rishabh.socialgrub.tabs.FacebookFragment;
+import com.rishabh.socialgrub.tabs.InstagramFragment;
+import com.rishabh.socialgrub.tabs.TwitterFragment;
+import java.lang.ref.WeakReference;
+
+public class TabsPagerAdapter extends FragmentStatePagerAdapter {
+
+	private final SparseArray<WeakReference<Fragment>> instantiatedFragments = new SparseArray<>();
+
+
+	public TabsPagerAdapter(FragmentManager fm) {
+		super(fm);
+	}
+
+	@Override
+	public Fragment getItem(int index) {
+
+		switch (index) {
+		case 0:
+			FacebookFragment facebookFragment =new FacebookFragment();
+			facebookFragment.setRetainInstance(true);
+			return facebookFragment;
+		case 1:
+			InstagramFragment instagramFragment=new InstagramFragment();
+			instagramFragment.setRetainInstance(true);
+			return instagramFragment;
+			case 2:
+				TwitterFragment twitterFragment=new TwitterFragment();
+				twitterFragment.setRetainInstance(true);
+				return twitterFragment;
+		default:
+			return new FacebookFragment();
+		}
+	}
+
+	@Override
+	public int getCount() {
+		// get item count - equal to number of tabs
+		return 2;
+	}
+
+
+	@Override public CharSequence getPageTitle(int position) {
+		if(position==0){
+			return new String("Download");
+		}else {
+			return new String("History");
+		}
+	}
+
+	@Override
+	public Object instantiateItem(final ViewGroup container, final int position) {
+		final Fragment fragment = (Fragment) super.instantiateItem(container, position);
+		instantiatedFragments.put(position, new WeakReference<>(fragment));
+		return fragment;
+	}
+
+	@Override
+	public void destroyItem(final ViewGroup container, final int position, final Object object) {
+		instantiatedFragments.remove(position);
+		super.destroyItem(container, position, object);
+	}
+
+	@Nullable
+	public Fragment getFragment(final int position) {
+		final WeakReference<Fragment> wr = instantiatedFragments.get(position);
+		if (wr != null) {
+			return wr.get();
+		} else {
+			return null;
+		}
+	}
+
+}

app/src/main/java/com/rishabh/socialgrub/tabs/FacebookFragment.java

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+package com.rishabh.socialgrub.tabs;
+
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.webkit.WebSettings;
+import android.webkit.WebView;
+import android.widget.Toast;
+import github.nisrulz.tablayout.R;
+
+public class FacebookFragment extends Fragment {
+
+	private WebView mWebView;
+
+	@Override
+	public void onCreate(@Nullable Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		Log.i("Tag1","GamesFrag");
+	}
+
+	@Override
+	public View onCreateView(LayoutInflater inflater, ViewGroup container,
+			Bundle savedInstanceState) {
+
+		View rootView = inflater.inflate(R.layout.fragment_facebook, container, false);
+
+		mWebView = (WebView) rootView.findViewById(R.id.wvFacebook);
+
+		WebSettings webSettings = mWebView.getSettings();
+		webSettings.setJavaScriptEnabled(true);
+
+		String url="https://www.facebook.com/";
+		if(url!=null) {
+			mWebView.loadUrl(url);
+		}else{
+			Toast.makeText(getContext(), "URL Dead", Toast.LENGTH_SHORT).show();
+		}
+
+		return rootView;
+	}
+
+}