Saturday, 1 November 2014

how to create swipe view in android example

main_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/pager"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

</android.support.v4.view.ViewPager>


swipe_fregmant.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/black"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="200dp"
        android:layout_height="150dp"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="10dp" />

    <TextView
        android:id="@+id/text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/imageView"
        android:gravity="center_vertical|center_horizontal"
        android:padding="20dp"
        android:text="@string/hello_world"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="@android:color/white"
        android:textIsSelectable="false"
        android:textSize="14sp" />

</ScrollView>

 MainActivity.java

package com.swiptesting;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends FragmentActivity implements OnClickListener{
    static final int NUM_ITEMS = 9;
    PlanetFragmentPagerAdapter planetFragmentPagerAdapter;
    ViewPager viewPager;
    private int positions = 6;
   
    private static final int SWIPE_MIN_DISTANCE = 120;
    private static final int SWIPE_MAX_OFF_PATH = 250;
    private static final int SWIPE_THRESHOLD_VELOCITY = 200;
    private GestureDetector gestureDetector;
    View.OnTouchListener gestureListener;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        planetFragmentPagerAdapter = new PlanetFragmentPagerAdapter(getSupportFragmentManager());
        viewPager = (ViewPager)findViewById(R.id.pager);
        viewPager.setAdapter(planetFragmentPagerAdapter);
       
        // Gesture detection
        gestureDetector = new GestureDetector(this, new MyGestureDetector());
        gestureListener = new View.OnTouchListener() {
            public boolean onTouch(View v, MotionEvent event) {
               
               
                return gestureDetector.onTouchEvent(event);
            }
        };
        viewPager.setOnTouchListener(gestureListener);
        viewPager.setCurrentItem(positions);
    }

  

    public static class PlanetFragmentPagerAdapter extends FragmentPagerAdapter {
        public PlanetFragmentPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public int getCount() {
            return NUM_ITEMS;
        }

        @Override
        public Fragment getItem(int position) {
            SwipeFragment fragment = new SwipeFragment();
            return fragment.newInstance(position);
        }
    }

    public static class SwipeFragment extends Fragment {
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
           
            View swipeView = inflater.inflate(R.layout.swipe_fragment, container, false);
           
            TextView tv = (TextView)swipeView.findViewById(R.id.text);
            ImageView img = (ImageView)swipeView.findViewById(R.id.imageView);
           
           
            Bundle args = getArguments();
            int position = args.getInt("position");
            String planet = Planet.PLANETS[position];
            int imgResId = getResources().getIdentifier(planet, "drawable", "com.swiptesting");
           
            img.setImageResource(imgResId);
            tv.setText(Planet.PLANET_DETAIL.get(planet));
           
            int mposition = 0;
            Bundle margs = getArguments();
            mposition = margs.getInt("position");
                     
           
            return swipeView;
        }

        SwipeFragment newInstance(int position) {
            SwipeFragment swipeFragment = new SwipeFragment();
            Bundle args = new Bundle();
            args.putInt("position", position);
            swipeFragment.setArguments(args);
            return swipeFragment;
        }
    }
    class MyGestureDetector extends SimpleOnGestureListener {
        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            try {
                if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)
                    return false;
                // right to left swipe
                if(e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
                   
                    Toast.makeText(MainActivity.this, "Left Swipe", Toast.LENGTH_SHORT).show();
                   
                }  else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
                   
                    Toast.makeText(MainActivity.this, "Right Swipe", Toast.LENGTH_SHORT).show();
                }
            } catch (Exception e) {
                // nothing
            }
            return false;
        }
    }
    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
       
    }
}


Planet.java

package com.swiptesting;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

public class Planet {
    public static final String[] PLANETS = { "one", "two", "three", "for_",
            "five", "six", "seven", "eight", "nine" };
    public static final Map<String, String> PLANET_DETAIL;
    static {
        Map<String, String> planets = new HashMap<String, String>();
        planets.put("one", "1" + " 1");
        planets.put("two", "2" + " 2");
        planets.put("three", "3" + "3");
        planets.put("for_", "4" + "4");
        planets.put("five", "5" + " 5");
        planets.put("six", "6" + "6");
        planets.put("seven", "7" + "7");
        planets.put("eight", "8" + " 8");
        planets.put("nine", "9" + " 9");
        PLANET_DETAIL = Collections.unmodifiableMap(planets);
    }
}







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