Glide-图片的加载和缓存

时间：2022-06-13 09:29:30

Glide的简绍和用法，请点击这里

对比写过的LruCache、DiskLruCache缓存

下面直接上代码，相信你一看就能明白：

MainActivity：

public class MainActivity extends Activity {
private GridView gridview;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();

    }
private void initView() {
        gridview = (GridView) findViewById(R.id.gridview);
        PhotoAdapter adapter = new PhotoAdapter(this, Images.imageThumbUrls);
        gridview.setAdapter(adapter);
    }

}

适配PhotoAdapter：

import com.bumptech.glide.Glide;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;

public class PhotoAdapter extends BaseAdapter {
private Context mContext;
private String[] images;
private int mScreeWidth;

public PhotoAdapter(Context context, String[] images) {
this.images = images;
this.mContext = context;
        mScreeWidth = context.getResources().getDisplayMetrics().widthPixels;
    }

@Override
public int getCount() {

return images.length;
    }

@Override
public Object getItem(int arg0) {

return images[arg0];
    }

@Override
public long getItemId(int arg0) {

return arg0;
    }

@Override
public View getView(int position, View convertView, ViewGroup arg2) {
        ViewHolder holder = null;
if (convertView == null) {
            LayoutInflater infaInflater = (LayoutInflater) mContext
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            holder = new ViewHolder();
            convertView = infaInflater.inflate(R.layout.photo_layout, null);
            holder.image = (ImageView) convertView.findViewById(R.id.photo);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        String uri = (String) getItem(position);
        Glide.with(mContext).load(uri).placeholder(R.drawable.empty_photo)
                .override(mScreeWidth / 3, mScreeWidth / 3).into(holder.image);
return convertView;
    }

    class ViewHolder {
        ImageView image;
    }

}

图片资源Images：

package com.example.glidedemo;

public class Images {

public final static String[] imageThumbUrls = new String[] {
"http://img.my.csdn.net/uploads/201407/26/1406383299_1976.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383291_6518.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383291_8239.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383290_9329.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383290_1042.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383275_3977.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383265_8550.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383264_3954.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383264_4787.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383264_8243.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383248_3693.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383243_5120.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383242_3127.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383242_9576.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383242_1721.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383219_5806.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383214_7794.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383213_4418.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383213_3557.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383210_8779.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383172_4577.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383166_3407.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383166_2224.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383166_7301.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383165_7197.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383150_8410.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383131_3736.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383130_5094.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383130_7393.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383129_8813.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383100_3554.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383093_7894.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383092_2432.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383092_3071.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383091_3119.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383059_6589.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383059_8814.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383059_2237.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383058_4330.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406383038_3602.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382942_3079.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382942_8125.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382942_4881.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382941_4559.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382941_3845.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382924_8955.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382923_2141.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382923_8437.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382922_6166.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382922_4843.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382905_5804.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382904_3362.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382904_2312.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382904_4960.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382900_2418.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382881_4490.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382881_5935.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382880_3865.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382880_4662.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382879_2553.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382862_5375.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382862_1748.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382861_7618.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382861_8606.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382861_8949.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382841_9821.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382840_6603.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382840_2405.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382840_6354.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382839_5779.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382810_7578.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382810_2436.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382809_3883.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382809_6269.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382808_4179.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382790_8326.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382789_7174.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382789_5170.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382789_4118.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382788_9532.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382767_3184.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382767_4772.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382766_4924.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382766_5762.jpg",
"http://img.my.csdn.net/uploads/201407/26/1406382765_7341.jpg",
"http://img.my.csdn.net/uploads/201308/31/1377949442_4562.jpg"
    };
}

最后加一个我们配置的图像配置类GlideConfiguration：

public class GlideConfiguration implements GlideModule {
private static final int MEMORY_MAX_SPACE=(int) (Runtime.getRuntime().maxMemory()/8);

@Override
public void applyOptions(Context context, GlideBuilder builder) {
//设置加载图片的样式,比默认图片质量好,但占用内存会大点
        builder.setDecodeFormat(DecodeFormat.PREFER_ARGB_8888);
        builder.setMemoryCache(new LruResourceCache(MEMORY_MAX_SPACE));
        builder.setDiskCache(new InternalCacheDiskCacheFactory(context, getDiskFileString(context,"glideCache"), 20*1024*1024));

    }

private String getDiskFileString(Context mContext,String str) {
         File dirFile=new File(mContext.getCacheDir().getAbsolutePath().toString()+str);
            File tempFile=new File(dirFile,"bitmaps");
if (! tempFile.getParentFile().exists()){
                tempFile.getParentFile().mkdirs();
            }
return tempFile.getAbsolutePath().toString();
    }

@Override
public void registerComponents(Context context, Glide glide) {

    }

}

代码就这样完成了，LruCache和DiskLruCache的细节统统可以不管了，是不是超爽….

下面看布局文件，和上篇没有变化：

activity_main:

<LinearLayout 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"
android:padding="2dp"
android:orientation="vertical" >
<GridView
 android:id="@+id/gridview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:horizontalSpacing="2dp"
android:numColumns="3"
android:verticalSpacing="1dp" >
</GridView>

</LinearLayout>

item布局：photo_layout:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >

<ImageView 
android:id="@+id/photo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
 />

</RelativeLayout>

最后一步，在Manifest清单文件中配置一下：

 <meta-data
            android:name="包名.GlideConfiguration"
            android:value="GlideModule" />

这样缓存的目的就达到了，不信你试试看….
运行效果图：

Glide-图片的加载和缓存

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