1.新增讀寫許可權 網路許可權

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

2.在Application 中 Fresco初始化

// 設定磁碟快取
DiskCacheConfig diskCacheConfig =  DiskCacheConfig.newBuilder(this)
                .setBaseDirectoryName("images_zjj")
                .setBaseDirectoryPath(Environment.getExternalStorageDirectory())
                .build();
        //設定磁碟快取的配置,生成配置檔案
        ImagePipelineConfig config = ImagePipelineConfig.newBuilder(this)
                .setMainDiskCacheConfig(diskCacheConfig)
                .build();
        Fresco.initialize(this,config);
 

OK.