在我的应用程序中，能够从服务器加载所有图像（使用 volley 库）并在网格视图中显示。
查看网格视图：
但是当我从图库中单击特定项目（图像）时，它无法在全视图中显示，但工作正常，如缩放、捏合和滑动等。
这是我的TouchImageView.java代码
FullScreenImageAdapter.java：
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.RelativeLayout;
import com.android.volley.toolbox.ImageLoader;
public class FullScreenImageAdapter extends PagerAdapter {
private Activity _activity;
private ArrayList<String> _imagePaths;
private LayoutInflater inflater;
// constructor
public FullScreenImageAdapter(Activity activity, ArrayList<String> imagePaths) {
this._activity = activity;
this._imagePaths = imagePaths;
}
@Override
public int getCount() {
return this._imagePaths.size();
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == ((RelativeLayout) object);
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
TouchImageView imgDisplay;
Button btnClose;
inflater = (LayoutInflater) _activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View viewLayout = inflater.inflate(R.layout.layout_fullscreen_image, container, false);
imgDisplay = (TouchImageView) viewLayout.findViewById(R.id.imgDisplay);
btnClose = (Button) viewLayout.findViewById(R.id.btnClose);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
options.inJustDecodeBounds = true;
options.inSampleSize = 4;
// Bitmap bitmap = BitmapFactory.decodeFile(_imagePaths.get(position),
// options);
// imgDisplay.setImageBitmap(bitmap);
// Loading image with placeholder and error image
ImageLoader imageLoader = AppController.getInstance().getImageLoader();
String path = _imagePaths.get(position);
imageLoader.get(path, ImageLoader.getImageListener(imgDisplay, R.drawable.ic_launcher, R.drawable.logo_final));
// close button click event
btnClose.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
_activity.finish();
}
});
((ViewPager) container).addView(viewLayout);
return viewLayout;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
((ViewPager) container).removeView((RelativeLayout) object);
}
}
FullScreenViewActivity.java：
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
public class FullScreenViewActivity extends Activity {
// private Utils utils;
private FullScreenImageAdapter adapter;
private ViewPager viewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fullscreen_view);
viewPager = (ViewPager) findViewById(R.id.pager);
// utils = new Utils(getApplicationContext());
Intent i = getIntent();
int position = i.getIntExtra("position", 0);
ArrayList<String> imagePaths = i.getExtras().getStringArrayList("imagePaths");
adapter = new FullScreenImageAdapter(FullScreenViewActivity.this, imagePaths);
viewPager.setAdapter(adapter);
// displaying selected image first
viewPager.setCurrentItem(position);
}
}
activity_fullscreen_view.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" >
<com.example.test.adapter.ExtendedViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
layout_fullscreen_image.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<com.example.test.util.TouchImageView
android:id="@+id/imgDisplay"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:src="@drawable/splash_screen_final" />
<Button
android:id="@+id/btnClose"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:background="@drawable/button_background"
android:paddingBottom="2dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="2dp"
android:text="@string/close"
android:textColor="#ffffff" />
</RelativeLayout>
ExtendedViewPager.java：
import android.content.Context;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.View;
public class ExtendedViewPager extends ViewPager {
public ExtendedViewPager(Context context) {
super(context);
}
public ExtendedViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
if (v instanceof TouchImageView) {
//
// canScrollHorizontally is not supported for Api < 14. To get around this issue,
// ViewPager is extended and canScrollHorizontallyFroyo, a wrapper around
// canScrollHorizontally supporting Api >= 8, is called.
//
return ((TouchImageView) v).canScrollHorizontallyFroyo(-dx);
} else {
return super.canScroll(v, checkV, dx, x, y);
}
}
}
触摸图像视图：
任何建议都可以赞赏..提前谢谢..