api 'org.xutils:xutils:3.5.0'

public class MyApplication extends Application { 
    @Override 
    public void onCreate() { 
        super.onCreate(); 
        Fresco.initialize(this); 
    } 
}

 <manifest 
    ... 
    > 
    <uses-permission android:name="android.permission.INTERNET" /> 
    <application 
      ... 
      android:label="@string/app_name" 
      android:name=".MyApplication" 
      > 
      ... 
    </application> 
    ... 
  </manifest>

<!-- 其他元素--> 
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:fresco="http://schemas.android.com/apk/res-auto" 
    android:layout_height="match_parent" 
    android:layout_width="match_parent">

<com.facebook.drawee.view.SimpleDraweeView 
    android:id="@+id/my_image_view" 
    android:layout_width="130dp" 
    android:layout_height="130dp" 
    fresco:placeholderImage="@drawable/my_drawable" 
  />

Uri uri = Uri.parse("https://raw.githubusercontent.com/facebook/fresco/gh-pages/static/logo.png"); 
SimpleDraweeView draweeView = (SimpleDraweeView) findViewById(R.id.my_image_view); 
draweeView.setImageURI(uri);