Android 如何在不使用 ImageView 的情况下使用 Picasso 加载位图？
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How to load a Bitmap with Picasso without using an ImageView?
提问by EES
With ImageView, I can use the following code to download image with callback
使用ImageView，我可以使用以下代码通过回调下载图像
Picasso.with(activity).load(url).into(imageView, new Callback()
{
@Override
public void onSuccess()
{
// do something
}
@Override
public void onError() { }
);
Or simply get the Bitmap from this Picasso.with(activity).load(url).get();. Is there anyway to add callback for just download the image? If possible please provide sample code, Cheers!
或者简单地从中获取位图Picasso.with(activity).load(url).get();。无论如何要添加回调以仅下载图像？如果可能，请提供示例代码，干杯！
回答by Philipp Jahoda
You can create aTargetand then modify the Bitmapinside the Targets callback method onBitmapLoaded(...). Here is how:
你可以创建一个Target然后修改Bitmap里面的Targets回调方法onBitmapLoaded(...)。方法如下：
// make sure to set Target as strong reference
private Target loadtarget;
public void loadBitmap(String url) {
if (loadtarget == null) loadtarget = new Target() {
@Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
// do something with the Bitmap
handleLoadedBitmap(bitmap);
}
@Override
public void onBitmapFailed() {
}
};
Picasso.with(this).load(url).into(loadtarget);
}
public void handleLoadedBitmap(Bitmap b) {
// do something here
}
