我正在使用Picasso库从URL下载图像.这是我对毕加索的第一次尝试
场景：我想从服务器下载一些图像并将它们存储到一个文件中.我知道如何存储到文件和检索.当我运行下面的代码时,我碰巧看到我只得到最后一张图片.看起来Picasso并行运行.我通过显示一个Toast消息来检查它.反正有没有解决这个问题？
问题：我只获得最后一个网址图片.
这是我的代码
static int count = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
for (int i = 0; i < url.length; i++)
{
// url is String array which has 2 urls.
++count; // Incrementing the count by 1
Picasso.with(this).load(url[i])
.into(new Target() {
@Override
public void onPrepareLoad(Drawable arg0) {
// TODO Auto-generated method stub
}
@Override
public void onBitmapLoaded(Bitmap arg0,LoadedFrom arg1) {
// TODO Auto-generated method stub
arg0 = Bitmap.createScaledBitmap(arg0,150,true);
filePath = saveFile(arg0); // I'm just calling this function to check how many times `onBitmapLoaded` is called. And it is called only once...!!
}
@Override
public void onBitmapFailed(Drawable arg0) {
// TODO Auto-generated method stub
}
});
}
}
public String saveFile (Bitmap bm)
{
Toast.makeText(getApplicationContext(),""+count,100).show(); // Displaying the value of count,which always display as **2**.
return "";
}
解决方法
试试这种方式,希望这可以帮助您解决问题.
static int count = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
for (int i = 0; i < url.length; i++)
{
// url is String array which has 2 urls.
Picasso.with(this).load(url[i])
.into(new Target() {
@Override
public void onPrepareLoad(Drawable arg0) {
// TODO Auto-generated method stub
}
@Override
public void onBitmapLoaded(Bitmap arg0,true);
++count; // Incrementing the count by 1
filePath = saveFile(arg0); // I'm just calling this function to check how many times `onBitmapLoaded` is called. And it is called only once...!!
}
@Override
public void onBitmapFailed(Drawable arg0) {
// TODO Auto-generated method stub
}
});
}
}
public String saveFile (Bitmap bm)
{
Toast.makeText(getApplicationContext(),which always display as **2**.
return "";
}
