Fresco获取动图,RecyclerView展示(只展示动图)

最新推荐文章于 2021-05-25 16:51:18 发布

love_mysunshine

最新推荐文章于 2021-05-25 16:51:18 发布

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本文链接：https://blog.youkuaiyun.com/love_mysunshine/article/details/78668522

本文介绍了如何在Android应用中使用Fresco库加载GIF图片。首先需要在项目中添加必要的依赖，然后创建RecyclerView用于展示GIF图片。通过自定义Adapter来绑定数据，并使用SimpleDraweeView显示动图。此外，还需要初始化Fresco并确保应用具有网络权限。

    **第一步:添加依赖,如**
    /*recyclerview依赖*/
    compile 'com.android.support:recyclerview-v7:26.1.0'
    /*fresco加载图片*/
    compile 'com.facebook.fresco:fresco:0.11.0'
    /*fresco加载动图*/
    compile 'com.facebook.fresco:animated-gif:0.12.0'
    **第二步,上代码**
    **activity_main**
    <?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.bawei.lss_gif.MainActivity">
<!--RecyclerView布局-->
<android.support.v7.widget.RecyclerView
    android:id="@+id/rv"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
</android.support.v7.widget.RecyclerView>

</android.support.constraint.ConstraintLayout>
    **layout_item**
    <?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">
<!--SimpleDraweeView控件,放置图片-->
<com.facebook.drawee.view.SimpleDraweeView
    android:id="@+id/tu"
    android:layout_width="100dp"
    android:layout_height="100dp"
    />

</LinearLayout>
  **MainActivity** 
  public class MainActivity extends AppCompatActivity {

    private RecyclerView mRv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        mRv.setLayoutManager(new LinearLayoutManager(this));

        Myadapter myadapter = new Myadapter(MainActivity.this);
        mRv.setAdapter(myadapter);
    }

    private void initView() {
        mRv = (RecyclerView) findViewById(R.id.rv);
    }
}
**Myadapter**
public class Myadapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
  private Context context;
  String[] path=new String[]{
          "http://qq.yh31.com/tp/zjbq/201711191845013603.gif",
          "http://qq.yh31.com/tp/zjbq/201711191845013603.gif",
          "http://qq.yh31.com/tp/zjbq/201711191845013603.gif",
          "http://qq.yh31.com/tp/zjbq/201711191845013603.gif",
          "http://qq.yh31.com/tp/zjbq/201711191845013603.gif",
          "http://qq.yh31.com/tp/zjbq/201711191845013603.gif",
          "http://qq.yh31.com/tp/zjbq/201711191845013603.gif",
          "http://qq.yh31.com/tp/zjbq/201711191845013603.gif"
  };

    public Myadapter(Context context) {
        this.context = context;

    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view=View.inflate(context,R.layout.layout_item,null);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
       MyViewHolder myViewHolder= (MyViewHolder) holder;

        DraweeController draweeController = Fresco.newDraweeControllerBuilder()
                .setUri(path[position])
                .setAutoPlayAnimations(true) // 设置加载图片完成后是否直接进行播放
                .build();
        myViewHolder.tu.setController(draweeController);
    }

    @Override
    public int getItemCount() {
        return path.length;
    }
    class MyViewHolder extends RecyclerView.ViewHolder{
        SimpleDraweeView tu;
        public MyViewHolder(View itemView) {
            super(itemView);
            tu = itemView.findViewById(R.id.tu);
        }
    }
}
**Myapp**
public class Myapp extends Application{
    @Override
    public void onCreate() {
        super.onCreate();
        Fresco.initialize(this);
    }
}
**最后别忘了添加网络权限,注册图片加载**