PhotoView之基础用法详解

来源：互联网发布：js中的slice方法编辑：程序博客网时间：2024/06/08 14:14

转载自：http://blog.csdn.net/fingerth/article/details/50477112

项目地址：https://github.com/chrisbanes/PhotoView

原理剖析文档：http://a.codekk.com/detail/Android/dkmeteor/PhotoView%20%E6%BA%90%E7%A0%81%E8%A7%A3%E6%9E%90
Demo地址：https://raw.githubusercontent.com/android-cn/android-open-project-demo/master/photoview-demo/app/photoview-demo.apk

Demo中PhotoView的用法。用法比较简单，直接代码解释。
1.FullScreenDemo

java代码

[java] view plain copy
import uk.co.senab.photoview.PhotoView;
import android.app.Activity;
import android.os.Bundle;


public class FullScreenDemo extends Activity {
    private PhotoView mPhotoView;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_fullscreen);
        mPhotoView = (PhotoView) findViewById(R.id.photoview);
        mPhotoView.setImageResource(R.drawable.saya);

    }
}

xml文件

[html] view plain copy
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


    <uk.co.senab.photoview.PhotoView
        android:id="@+id/photoview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

2.ViewPagerDemo

Java代码

[java] view plain copy
import uk.co.senab.photoview.PhotoView;  
import android.app.Activity;  
import android.os.Bundle;  
import android.support.v4.view.PagerAdapter;  
import android.support.v4.view.ViewPager;  
import android.view.View;  
import android.view.ViewGroup;  
import android.view.ViewGroup.LayoutParams;  
  
  
public class ViewPagerDemo extends Activity {  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_viewpager);  
        ViewPager pager = (ViewPager) findViewById(R.id.viewpager);  
        pager.setAdapter(new DemoAdapter());  
    }  
  
  
    class DemoAdapter extends PagerAdapter {  
  
  
        @Override  
        public int getCount() {  
            return 3;  
        }  
  
  
        @Override  
        public void destroyItem(ViewGroup container, int position, Object object) {  
            container.removeView((View) object);  
        }  
  
  
        @Override  
        public boolean isViewFromObject(View view, Object object) {  
            return view == object;  
        }  
  
  
        @Override  
        public Object instantiateItem(ViewGroup container, int position) {  
            PhotoView photoview = new PhotoView(ViewPagerDemo.this);  
            photoview.setImageResource(R.drawable.saya);  
            container.addView(photoview, LayoutParams.MATCH_PARENT,  
                    LayoutParams.MATCH_PARENT);  
            return photoview;  
        }  
  
  
    }  
}  

xml文件

[html] view plain copy
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


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

</LinearLayout>

3.ImageLoaderDemo

java代码

[java] view plain copy
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;


import uk.co.senab.photoview.PhotoView;
import android.app.Activity;
import android.os.Bundle;


public class ImageLoaderDemo extends Activity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_integration);
        PhotoView photoView = (PhotoView) findViewById(R.id.photoview);


        ImageLoader.getInstance().init(
                ImageLoaderConfiguration.createDefault(this));


        /**
         * The Image URL is comes from my space. If it is invalid, you can
         * change to any other picture url.
         */
        ImageLoader.getInstance().displayImage(
                "http://img5.imgtn.bdimg.com/it/u=854933491,3774339278&fm=21&gp=0.jpg", photoView);
    }
}

xml文件
[html] view plain copy
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


    <uk.co.senab.photoview.PhotoView
        android:id="@+id/photoview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />


</LinearLayout>

4.PicassoDemo

java代码

[java] view plain copy
import uk.co.senab.photoview.PhotoView;
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;


import com.squareup.picasso.Picasso;


public class PicassoDemo extends Activity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_integration);
        PhotoView photoView = (PhotoView) findViewById(R.id.photoview);


        DisplayMetrics dm = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(dm);


        Picasso.with(this).load("http://img5.imgtn.bdimg.com/it/u=854933491,3774339278&fm=21&gp=0.jpg")
                .centerInside().resize(dm.widthPixels, dm.heightPixels).tag(this).into(photoView);
    }
}

xml文件

[html] view plain copy
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    android:orientation="vertical" >  
  
  
    <uk.co.senab.photoview.PhotoView  
        android:id="@+id/photoview"  
        android:layout_width="match_parent"  
        android:layout_height="match_parent" />  
  
  
</LinearLayout>  

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