photoView实现图片多点触控效果

本文实例为大家分享了PhotoView实现图片多点触控效果展示的具体代码，供大家参考，具体内容如下

效果:点击后能够自由缩放、平移；

添加依赖:

compile 'com.commit451:PhotoView:1.2.4' 
compile 'com.github.bumptech.glide:glide:3.5.2'

布局文件:

<?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"> 
 
 <RelativeLayout 
  android:layout_width="match_parent" 
  android:layout_height="wrap_content" 
  android:background="@android:color/white"> 
 
  <!-- 抽取所有的Viewpager布局--> 
  <android.support.v4.view.ViewPager 
   android:id="@+id/viewPager" 
   android:layout_width="match_parent" 
   android:layout_height="wrap_content" /> 
 
  <LinearLayout 
   android:id="@+id/ll_point" 
   android:layout_width="match_parent" 
   android:layout_height="wrap_content" 
   android:layout_alignBottom="@id/viewPager" 
   android:layout_marginBottom="10dp" 
   android:layout_marginTop="10dp" 
   android:gravity="center" 
   android:orientation="horizontal" /> 
 </RelativeLayout> 
 
 
</LinearLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:background="#ffffff"> 
 
 <com.example.tuhuadmin.imagetouch.HackyViewPager 
  android:id="@+id/hViewPager" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" /> 
</RelativeLayout>

代码实现:

package com.example.tuhuadmin.imagetouch; 
 
import android.content.Intent; 
import android.support.v4.view.ViewPager; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ImageView; 
import android.widget.LinearLayout; 
import android.widget.RelativeLayout; 
 
import com.bumptech.glide.Glide; 
 
import java.util.ArrayList; 
 
public class MainActivity extends AppCompatActivity { 
 
 private ViewPager vp; 
 private LinearLayout ll_point; 
 private ArrayList<String> mImages; 
 //用于存放ImageView 
 private ArrayList<ImageView> imageViewsList; 
 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_main); 
 
  initViews(); 
  initImageUrl(); 
  getImageData(); 
 } 
 
 private void initImageUrl() { 
  //要显示的图片地址添加到集合里面 
  mImages = new ArrayList<String>(); 
  mImages.add(Constant.url1); 
  mImages.add(Constant.url2); 
  mImages.add(Constant.url4); 
  mImages.add(Constant.url5); 
  mImages.add(Constant.url6); 
 
  imageViewsList = new ArrayList<>(); 
 } 
 
 private void initViews() { 
  vp = (ViewPager) findViewById(R.id.viewPager); 
  ll_point = (LinearLayout) findViewById(R.id.ll_point); 
 
  //让图片正方形显示 
  RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, ScreenUtils.getScreenWidth(this)); 
  vp.setLayoutParams(params); 
 
 } 
 
 public void getImageData() { 
  if (mImages.size() == 1) { 
   // 只有一张图片 就不显示圆点 
  } else { 
   for (int i = 0; i < mImages.size(); i++) { 
    View point = new View(this); 
    //point.setId(i);//设置Id 
    point.setTag(i);//设置Tag 
    //设置背景 
    point.setBackgroundResource(R.drawable.point_selector); 
    //布局参数 
    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(15, 15); 
    params.rightMargin = 20;//右边距 
    //把点添加到线性布局 
    ll_point.addView(point, params); 
   } 
   View point = ll_point.getChildAt(0); 
   point.setEnabled(false); 
  } 
  for (int i = 0; i < mImages.size(); i++) { 
   ImageView iv = new ImageView(this); 
   //设置iv的宽高 
   ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ScreenUtils.getScreenWidth(this)); 
   iv.setLayoutParams(params); 
   //设置iv的填充样式--->可能导致图片变形 
   iv.setScaleType(ImageView.ScaleType.FIT_XY); 
   String url = mImages.get(i); 
   Glide.with(this).load(url).into(iv); 
 
   //设置图片的点击事件 
   //为每一个ImageView设置单独的标记、图片的位置 
   iv.setTag(i); 
   iv.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View view) { 
     int position = (int) view.getTag(); 
     Intent intent = new Intent(MainActivity.this, PhotoShowActivity.class); 
     //传递当前点击的图片的位置、图片路径集合 
     intent.putExtra("position", position); 
     intent.putStringArrayListExtra("mImages", mImages); 
     startActivity(intent); 
    } 
   }); 
 
   // 把图片添加到集合里面 
   imageViewsList.add(iv); 
  } 
 
  vp.setAdapter(new ViewPagerAdapter(imageViewsList,vp) ); 
  vp.setOnPageChangeListener(new MyOnPageChangeListener()); 
 } 
 
 private class MyOnPageChangeListener implements ViewPager.OnPageChangeListener { 
  @Override 
  public void onPageScrollStateChanged(int arg0) { 
  } 
 
  @Override 
  public void onPageScrolled(int arg0, float arg1, int arg2) { 
 
  } 
 
  //页面选择 
  @Override 
  public void onPageSelected(int index) { 
   changePager(index); 
  } 
 } 
 
 private void changePager(int index) { 
  int childCount = ll_point.getChildCount(); 
  for (int i = 0; i < childCount; i++) { 
   View point = ll_point.getChildAt(i);//获取小圆点 
   if (index == i) { 
    //当前选择的页面下标 
    point.setEnabled(false); 
   } else { 
    point.setEnabled(true); 
   } 
  } 
 } 
}

PhotoShowActivity中代码实现:

package com.example.tuhuadmin.imagetouch; 
 
import android.app.Activity; 
import android.graphics.Color; 
import android.os.Bundle; 
import android.support.v4.view.PagerAdapter; 
import android.text.TextUtils; 
import android.view.View; 
import android.view.ViewGroup; 
 
import com.bumptech.glide.Glide; 
 
import java.util.ArrayList; 
 
import uk.co.senab.photoview.PhotoView; 
import uk.co.senab.photoview.PhotoViewAttacher; 
 
/** 
 * Created on 2016/7/19. 
 * Author:crs 
 * Description:XXX 
 */ 
public class PhotoShowActivity extends Activity { 
 
 private int position; 
 private ArrayList<String> mDatas; 
 private HackyViewPager hViewPager; 
 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_photo_show); 
 
  getFrontPageData(); 
  initViews(); 
 
 } 
 
 private void initViews() { 
  hViewPager = (HackyViewPager) findViewById(R.id.hViewPager); 
  hViewPager.setAdapter(new ImageAdapter()); 
  //为ViewPager当前page的数字 
  hViewPager.setCurrentItem(position); 
 } 
 
 public void getFrontPageData() { 
  //点击图片的位置 
  position = getIntent().getIntExtra("position", 0); 
  //获取传递过来的图片地址 
  mDatas = getIntent().getStringArrayListExtra("mImages"); 
 } 
 
 
 public class ImageAdapter extends PagerAdapter { 
  @Override 
  public int getCount() { 
   return null == mDatas ? 0 : mDatas.size(); 
  } 
 
  @Override 
  public boolean isViewFromObject(View view, Object object) { 
   return view == object; 
  } 
 
  @Override 
  public void destroyItem(ViewGroup container, int position, Object object) { 
   container.removeView((View) object); 
  } 
 
  @Override 
  public Object instantiateItem(ViewGroup container, int position) { 
   //创建显示图片的控件 
   PhotoView photoView = new PhotoView(container.getContext()); 
   //设置背景颜色 
   photoView.setBackgroundColor(Color.WHITE); 
   //把photoView添加到viewpager中，并设置布局参数 
   container.addView(photoView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); 
   //加载当前PhtotoView要显示的数据 
   String url = mDatas.get(position); 
 
   if (!TextUtils.isEmpty(url)) { 
    //使用使用Glide进行加载图片进行加载图片 
    Glide.with(PhotoShowActivity.this).load(url).into(photoView); 
   } 
 
   //图片单击事件的处理 
   photoView.setOnViewTapListener(new PhotoViewAttacher.OnViewTapListener() { 
    @Override 
    public void onViewTap(View view, float x, float y) { 
     finish(); 
    } 
   }); 
   return photoView; 
  } 
 
 } 
}

ScreenUtils中代码：WindowManager类的使用 WINDOW_SERVICE Display(屏幕参数工具类)

package com.example.tuhuadmin.imagetouch; 
 
import android.content.Context; 
import android.view.Display; 
import android.view.WindowManager; 
 
/** 
 * Created on 2016/7/19. 
 * Author:crs 
 * Description:XXX 
 */ 
public class ScreenUtils { 
 
 public static int getScreenWidth(Context context) { 
  WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); 
  Display defaultDisplay = wm.getDefaultDisplay(); 
  int width = defaultDisplay.getWidth(); 
  return width; 
 
 } 
}

Constant接口中存储字符串常量:

package com.example.tuhuadmin.imagetouch; 
 
/** 
 * Created on 2016/7/19. 
 * Author:crs 
 * Description:XXX 
 */ 
public interface Constant { 
 
 String url1 = "http://pic.yesky.com/uploadImages/2016/181/06/L3JL486FYCL7.jpg"; 
 String url2 = "http://pic.yesky.com/uploadImages/2016/181/07/9MXS11F0HOC2.jpg"; 
 String url5 = "http://xm.fjsen.com/images/attachement/jpg/site2/20160629/38c986e7161c18dd5a6c1d.jpg"; 
 String url4 = "http://pimg.damai.cn/perform/project/281/28183_n.jpg"; 
 String url6 = "http://i3.hunantv.com/p1/20110905/1702374043.jpg"; 
 
}

ViewPagerAdapter：

package com.example.tuhuadmin.imagetouch; 
 
import android.support.v4.view.PagerAdapter; 
import android.support.v4.view.ViewPager; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ImageView; 
 
import java.util.ArrayList; 
 
/** 
 * Created on 2016/7/19. 
 * Author:crs 
 * Description:XXX 
 */ 
public class ViewPagerAdapter extends PagerAdapter { 
 
 ArrayList<ImageView> mImages; 
 ViewPager vp; 
 
 public ViewPagerAdapter(ArrayList<ImageView> mImages, ViewPager vp) { 
  this.mImages = mImages; 
  this.vp = vp; 
 } 
 
 @Override 
 public int getCount() { 
  return null == mImages ? 0 : mImages.size(); 
 } 
 
 @Override 
 public boolean isViewFromObject(View arg0, Object arg1) { 
  return arg0 == arg1; 
 } 
 
 @Override 
 public void destroyItem(ViewGroup container, int position, Object object) { 
  ImageView iv = mImages.get(position); 
  vp.removeView(iv); 
 } 
 
 @Override 
 public Object instantiateItem(ViewGroup container, int position) { 
  ImageView iv = mImages.get(position); 
  vp.addView(iv); 
  return mImages.get(position); 
 } 
 
}

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