Android viewPager image slide right to left

问题

I want to add an image slide. But cannot make it slide from right to left. (for languages like Arabic or Hebrew)

I checked nearly all replies in stackoverflow, but can not find a clear solution.

I write here the whole code.

Please write me clearly, I am not a professional

mainActivity;

package com.manishkpr.viewpagerimagegallery;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.ViewPager;

public class MainActivity extends Activity {
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
    ImageAdapter adapter = new ImageAdapter(this);
    viewPager.setAdapter(adapter);


  }


}

here is the ImageAdapter.java;

package com.manishkpr.viewpagerimagegallery;

import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

public class ImageAdapter extends PagerAdapter {
    Context context;
    private int[] GalImages = new int[] {
        R.drawable.one,
        R.drawable.two,
        R.drawable.three
    };
    ImageAdapter(Context context){
        this.context=context;
    }
    @Override
    public int getCount() {
      return GalImages.length;
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {
      return view == ((ImageView) object);
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
      ImageView imageView = new ImageView(context);
      int padding = context.getResources().getDimensionPixelSize(R.dimen.padding_medium);
      imageView.setPadding(padding, padding, padding, padding);
      imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
      imageView.setImageResource(GalImages[position]);
      ((ViewPager) container).addView(imageView, 0);


      return imageView;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
      ((ViewPager) container).removeView((ImageView) object);
    }
  }

and here is the layout file;

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

          <android.support.v4.view.ViewPager
          android:id="@+id/view_pager"
          android:layout_width="match_parent"
          android:layout_height="match_parent" />

</RelativeLayout>

回答1:

Create a Layout file pager_item.xml:

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/imageView" />
</LinearLayout>

Change your PagerAdapter like this:

public class ImageAdapter extends PagerAdapter {
Context context;
private int[] GalImages = new int[] {
    R.drawable.one,
    R.drawable.two,
    R.drawable.three
};

LayoutInflater mLayoutInflater;

ImageAdapter(Context context){
    this.context=context;
    mLayoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
  return GalImages.length;
}

@Override
public boolean isViewFromObject(View view, Object object) {
  return view == ((LinearLayout) object);
}

@Override
public Object instantiateItem(ViewGroup container, int position) {
    View itemView = mLayoutInflater.inflate(R.layout.pager_item, container, false);

    ImageView imageView = (ImageView) itemView.findViewById(R.id.imageView);
    imageView.setImageResource(GalImages[position]);

    container.addView(itemView);

    return itemView;
}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {
  container.removeView((LinearLayout)object);
}
}

EDIT 1:

A trick :

public class MainActivity extends Activity {


@Override
  public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
ImageAdapter adapter = new ImageAdapter(this);
viewPager.setAdapter(adapter);
viewPager.setCurrentItem(adapter.getCount()-1);

}

I hope this helps :)

回答2:

ViewPager is not support RTL.

You have to create custom ViewPager for swipe Right To Left for Arabic and other languages.

If you don't want to make code then there are lots of library available you can use one of them.

1. RtlViewPager

2. RtlViewPager

回答3:

Instead of using ViewPager I suggest you to use SwipeDeck Because as Niranj Patel said ViewPager does not Support Right to left.

<?xml version="1.0" encoding="utf-8"?>
<com.daprlabs.cardstack.SwipeFrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:swipedeck="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <com.daprlabs.cardstack.SwipeDeck
        android:id="@+id/swipe_deck"
        android:layout_width="match_parent"
        android:layout_height="480dp"
        android:padding="20dp"
        swipedeck:card_spacing="10dp"
        swipedeck:max_visible="3"
        swipedeck:render_above="true"
        swipedeck:rotation_degrees="15" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:text="Button" />

</com.daprlabs.cardstack.SwipeFrameLayout>