Fresco的简单实用

依赖

    //使用+代表依赖库的最新版本    //Fresco    compile 'com.facebook.fresco:fresco:+'    //支持GIF    compile 'com.facebook.fresco:animated-gif:+'

MainActivity.java

package com.example.fresco;import android.graphics.drawable.Animatable;import android.net.Uri;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.Toast;import com.facebook.drawee.backends.pipeline.Fresco;import com.facebook.drawee.controller.AbstractDraweeController;import com.facebook.drawee.controller.BaseControllerListener;import com.facebook.drawee.view.SimpleDraweeView;import com.facebook.imagepipeline.image.ImageInfo;import com.facebook.imagepipeline.request.ImageRequest;import com.facebook.imagepipeline.request.ImageRequestBuilder;public class MainActivity extends AppCompatActivity {    public String mImageUrl="http://imgstore.cdn.sogou.com/app/a/100540002/661782.jpg";    public String mErrorUrl="http://imgstore.cdn.sogou.com/app/a/100542/661782.jpg";    public String mGifUrl="http://p0.ifengimg.com/pmop/2017/0729/FE0633609A001942214FB696CB2EFA2C2FF30E2B_size413_w500_h226.gif";    public String mJpegUrl="http://imgsrc.baidu.com/image/c0%3Dshijue1%2C0%2C0%2C294%2C40/sign=041e9e287acf3bc7fc0dc5afb969d0d4/9e3df8dcd100baa1ae06259e4d10b912c8fc2ee8.jpg";    private SimpleDraweeView sdv;    private Button btn;    private int LKH=0;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //需要初始化Fresco        Fresco.initialize(this);        setContentView(R.layout.activity_main);        //获取控件        sdv = (SimpleDraweeView) findViewById(R.id.sdv);        btn = (Button) findViewById(R.id.btn);        //得到URI        Uri uri = Uri.parse(mGifUrl);        //设置图片地址        sdv.setImageURI(uri);////       // 在java代码中设置view的一些xml属性 失败、重试//        GenericDraweeHierarchy draweeHierarchy = new GenericDraweeHierarchyBuilder(getResources())//                .setFailureImage(ContextCompat.getDrawable(this, R.drawable.icon_failure))//                .build();////        sdv.setHierarchy(draweeHierarchy);        //也可以控制图片请求的一些特性        ImageRequest build = ImageRequestBuilder.newBuilderWithSource(uri)                //射中支持JPEG的渐进展示（从模糊到清晰）                .setProgressiveRenderingEnabled(true)                .build();        //控制图片加载的一些特性        AbstractDraweeController controller = Fresco.newDraweeControllerBuilder()                .setImageRequest(build)                .setUri(uri)                //设置可重新设置（4次）               // .setTapToRetryEnabled(true)                //设置自动播放               // .setAutoPlayAnimations(true)                //设置监听图片加载                .setControllerListener(new BaseControllerListener<ImageInfo>(){                    @Override                    public void onFinalImageSet(String id, ImageInfo imageInfo, Animatable animatable) {                    }                    @Override                    public void onFailure(String id, Throwable throwable) {                        Toast.makeText(MainActivity.this,"失败",Toast.LENGTH_SHORT).show();                    }                })                .build();        sdv.setController(controller);        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Animatable animatable = sdv.getController().getAnimatable();                if (LKH%2==0){                    LKH++;                    animatable.start();                }else {                    LKH++;                    animatable.stop();                }            }        });    }}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout 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"    android:orientation="vertical">    <!--fresco:viewAspectRatio="1.5"  设置宽高比-->    <!--fresco:failureImage="@drawable/icon_failure"  网络加载失败图片-->    <!--fresco:progressBarImage="@drawable/icon_progress_bar"  网络缓慢过度图片-->    <!--fresco:progressBarAutoRotateInterval="3000"   旋转-->    <!--fresco:roundedCornerRadius="30dp"   设置弧度-->    <!--fresco:roundTopLeft="false"    设置是否有弧度-->    <!--fresco:roundAsCircle="true"   设置圆边框-->    <!--fresco:roundingBorderWidth="20dp"  设置边框宽度-->    <!--fresco:roundingBorderColor="#00f"  设置边框颜色-->    <com.facebook.drawee.view.SimpleDraweeView        android:id="@+id/sdv"        android:layout_gravity="center"        android:layout_width="400dp"        android:layout_height="wrap_content"        fresco:viewAspectRatio="1.5"        fresco:failureImage="@drawable/icon_failure"        fresco:progressBarImage="@drawable/icon_progress_bar"        fresco:progressBarAutoRotateInterval="3000"        fresco:fadeDuration="5000"        fresco:retryImage="@drawable/icon_retry"        fresco:roundedCornerRadius="30dp"        fresco:roundTopLeft="false"        fresco:roundBottomRight="false"        fresco:roundAsCircle="true"        fresco:roundingBorderWidth="20dp"        fresco:roundingBorderColor="#00f"        />    <!--<com.facebook.drawee.view.SimpleDraweeView-->        <!--android:id="@+id/sdv"-->        <!--android:layout_gravity="center"-->        <!--android:layout_width="400dp"-->        <!--android:layout_height="wrap_content"-->        <!--fresco:viewAspectRatio="1.5"-->        <!--/>-->    <Button        android:id="@+id/btn"        android:layout_gravity="center"        android:background="#ffab77"        android:layout_width="300dp"        android:layout_height="60dp"        android:textColor="#fff"        android:text="点击"/></LinearLayout>