如何做图库图像默认情况下从左到右交换 [英] How to do Gallery Images swap Left To right bydefault

问题描述

我有Image Gallery.首先，我必须从右向左交换以查看更多图像.我想使用默认情况下开始从左向右沼泽的图片库

public View getView(int index, View view, ViewGroup viewGroup)
{
    ImageView img = new ImageView(mContext);
    ShowImgsActivity.pagNumber.setText(index+"");
    img.setImageResource(ShowImgsActivity.typedImgs.getResourceId((ShowImgsActivity.typedImgs.length()-1)-index, -1));
    img.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    img.setScaleType(ImageView.ScaleType.FIT_XY);

解决方案

您可以将ViewPager用作图像库.它可以左右滑动以查看previo和下一张图像.

这是Java类，布局文件和适配器.

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);
}

}

布局文件:

<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>

适配器:

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);
}
}

您可以询问是否还有其他查询.查看鳍状肢是另一种选择.

快乐编码:)

参考资料:此处

I have Image Gallery . In start, I have to swap right to left to see more Images . I want to Images Gallery that start left to right swamping by default

public View getView(int index, View view, ViewGroup viewGroup)
{
    ImageView img = new ImageView(mContext);
    ShowImgsActivity.pagNumber.setText(index+"");
    img.setImageResource(ShowImgsActivity.typedImgs.getResourceId((ShowImgsActivity.typedImgs.length()-1)-index, -1));
    img.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    img.setScaleType(ImageView.ScaleType.FIT_XY);

解决方案

You can use ViewPager as an Image Gallery.It lets you swipe left and right to see previos and next images.

Here's is Java class,layout file and Adapter.

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);
}

}

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>

Adapter:

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);
}
}

You can ask if you have any further queries.View flipper is another option.

Happy coding :)

Reference :here

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