Fresco 加载图片

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//导入依赖

compile 'com.facebook.fresco:fresco:0.8.1+'

//加载网络图片加网络权限

<uses-permission android:name="android.permission.INTERNET"/>

布局

<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    xmlns:fresco="http://schemas.android.com/apk/res-auto">    <com.facebook.drawee.view.SimpleDraweeView        android:layout_width="400dp"        android:layout_height="match_parent"        android:id="@+id/fsd"        fresco:placeholderImage="@mipmap/ic_launcher"/></android.support.constraint.ConstraintLayout>

//初始化多次用到Fresco，建议在 Application 初始化

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

MainActivity 代码

在activity中加载图片显示，Fresco 不支持相对路径的URI. 所有的URI都必须是绝对路径，并且带上该URI的scheme。

package bwie.com.exercise;import android.net.Uri;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import com.facebook.drawee.backends.pipeline.Fresco;import com.facebook.drawee.interfaces.DraweeController;import com.facebook.drawee.view.SimpleDraweeView;public class MainActivity extends AppCompatActivity {    private SimpleDraweeView fsd;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        // Fresco.initialize(this);//Fresco的初始化，必须调用在setContentView之前        setContentView(R.layout.activity_main);        fsd = (SimpleDraweeView) findViewById(R.id.fsd);        Uri uri =  Uri.parse("http://dynamic-image.yesky.com/740x-/uploadImages/2015/163/50/690V3VHW0P77.jpg");        fsd.setImageURI(uri);    }}

//效果图

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