Swipe to open new screen Swift

We want user can swipe screen to open new class, use this function.

func tap (g:UIGestureRecognizer) {

let vc = second()

self.presentViewController(vc, animated: true, completion: nil)

 }

Add this line in to viewDidLoad.

let t = UIPanGestureRecognizer(target:self, action:#selector(tap(_:)))

view.addGestureRecognizer(t)

On new class, if want swipe back to previous screen, use this.

func tap (g:UIGestureRecognizer) {

self.dismissViewControllerAnimated(true, completion: nil)

    }

Add to viewDidLoad.

let t2 = UIPanGestureRecognizer(target:self, action:#selector(second.tap(_:)))

view.addGestureRecognizer(t2)

}

Swipe screen with viewpager

We want user can change to next screen by use their finger to swipe on screen

Create a class with activity_main.xml like this

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity" >   

    <android.support.v4.view.ViewPager

        android:id="@+id/viewPager"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        />

</RelativeLayout>

In folder layout, create three xml file name ac.xml, ac2.xml, ac3.xml like below.

ac.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="#ffffff"

    android:orientation="vertical" >

   <TextView

        android:id="@+id/tv"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:layout_marginTop="5dp"

        android:text="Text example"

        android:textColor="#800000"

        android:textSize="20dp" />

    <Button

        android:id="@+id/bu1"

        android:layout_width="85dp"

        android:layout_height="40dp"

        android:layout_gravity="center"

        android:text="Button 1"

        android:textColor="#0000cd"

        android:textSize="14sp" />

</LinearLayout>

ac2.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/tv"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:layout_marginTop="5dp"

        android:text="Text example 2"

        android:textColor="#800000"

        android:textSize="20sp" />

    <Button

        android:id="@+id/bu1"

        android:layout_width="65dp"

        android:layout_height="40dp"

        android:layout_gravity="center"

        android:text="Button 2"

        android:textColor="#0000cd"

        android:textSize="14sp" />

</LinearLayout>

ac3.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/tv"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:layout_marginTop="5dp"

        android:text="Text example 3"

        android:textColor="#800000"

        android:textSize="20dp" />

   

    <Button

        android:id="@+id/bu"

        android:layout_width="105dp"

        android:layout_height="40dp"

        android:layout_gravity="center"

        android:text="Button 3"

        android:textColor="#0000cd"

        android:textSize="15sp" />

</LinearLayout>

Create a class name myadapter extends PagerAdapter{

     public int getCount() {

        return 3;

    } 

    public Object instantiateItem(View collection, int position) {

LayoutInflater inflater = (LayoutInflater) collection.getContext()

                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        int resId = 0;

        switch (position) {

        case 0:

            resId = R.layout.ac;           

            break;

        case 1:

            resId = R.layout.ac2;

            break;

        case 2:

            resId = R.layout.ac3;

            break;

        }       

  View view = inflater.inflate(resId, null);   

       if(position==0){

        final TextView tv = (TextView) view.findViewById(R.id.tv2);

        tv.setText("Example text 1");

        Button b1 = (Button) view.findViewById(R.id.bu1);

        b1.setOnClickListener(new View.OnClickListener() {

               @Override

               public void onClick(View v) {

                      tv.setText("Button clicked");

               }

          });

        }

        else if(position==1){

          final TextView tv = (TextView) view.findViewById(R.id.tv);

            tv.setText("Example text 2");

            Button b1 = (Button) view.findViewById(R.id.bu1);

            b1.setOnClickListener(new View.OnClickListener() {

               @Override

               public void onClick(View v) {

                      tv.setText("Button clicked");

               }

          });

        }

        else {

          final TextView tv = (TextView) view.findViewById(R.id.tv);

            tv.setText("Example text 3");

            Button b1 = (Button) view.findViewById(R.id.bu);

            b1.setOnClickListener(new View.OnClickListener() {

               @Override

               public void onClick(View v) {

                      tv.setText("Button clicked");

               }

          });

  }     

((ViewPager) collection).addView(view, 0);

   return view;

    }

    @Override

    public void destroyItem(View arg0, int arg1, Object arg2) {

        ((ViewPager) arg0).removeView((View) arg2);

    }

    @Override

    public boolean isViewFromObject(View arg0, Object arg1) {

        return arg0 == ((View) arg1);

    }

    @Override

    public Parcelable saveState() {

        return null;

    }

Import liraries

In class MainActivity, copy to below setContentView.

myadapter adapter = new myadapter(this);

ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager);   

viewPager.setAdapter(adapter);     

viewPager.setCurrentItem(0);

Run and swipe to new screen.