未调用毕加索回调

【问题标题】：Picasso callback not called未调用毕加索回调
【发布时间】：2020-10-28 05:28:20
【问题描述】：

我是 android 世界的新手，并尝试使用 Picasso 将图像加载到 ImageView。这是代码。

Picasso.with(HomeScreenActivity.getInstance().getBaseContext())
.load(mFile)
.fit().memoryPolicy(MemoryPolicy.NO_CACHE, MemoryPolicy.NO_STORE).
networkPolicy(NetworkPolicy.NO_CACHE, NetworkPolicy.NO_STORE).
into(imageView, new callback() {
 @Override
 public void onSuccess() {
     Log.d("picasso-service", " onSuccess: ");    
  }
  @Override
 public void onError() {   
       Log.d("picasso-service", "onError ");
 }
});```


**OnSuccess or OnError callbacks are not triggered**

【问题讨论】：

标签： android callback imageview picasso

【解决方案1】：

不要使用HomeScreenActivity.getInstance().getBaseContext()，而是使用this 或HomeScreenActivity.this

Picasso.with(HomeScreenActivity.this)
            .load(uri)
            .fit().memoryPolicy(MemoryPolicy.NO_CACHE, MemoryPolicy.NO_STORE).
            networkPolicy(NetworkPolicy.NO_CACHE, NetworkPolicy.NO_STORE).
    into(imageView, new Callback() {
@Override
public void onSuccess() {
    Log.d("picasso-service", " onSuccess: ");
}

@Override
public void onError() {
    Log.d("picasso-service", "onError ");
}});

【讨论】：