大佬教程收集整理的这篇文章主要介绍了photoView实现图片多点触控效果，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
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；
@L_489_6@依赖:
布局文件:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://scheR_479_11845@as.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://scheR_479_11845@as.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@L_489_6@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@L_489_6@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@L_489_6@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 @R_197_8487@an 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@L_489_6@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 @R_197_8487@an isViewFromObject(View arg0,Object arg1) { return arg0 == arg1; } @Override public void destroyItem(ViewGroup container,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); } }
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。
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