Android Picasso 没有加载要从处理程序查看的 img

Question

我试图在 Thread 中获取图片 url 并在 Picasso 中加载，但图片不显示。 Url 有效。 Picasso 不加载占位符和错误 img。没有线程和处理程序工作正常。

     final String[] sss = {""};
    final Handler hh = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            Picasso.with(context).load(sss[0]).resize(500, 281).centerCrop().into(mainHolder.ivPreview);
        }
    };
    Thread th = new Thread(new Runnable() {
        @Override
        public void run() {
            sss[0] = getUrl();
            hh.sendEmptyMessage(0);

        }
    });
    th.start();

Answer 1

您再次检查 getUrl() 和上下文。此代码对我有用。

 public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final ImageView imageView= (ImageView) findViewById(R.id.imageView);

        final Context context=this;
        final String[] sss = {""};
        final Handler hh = new Handler(){
            @Override
            public void handleMessage(Message msg) {
                super.handleMessage(msg);
                Picasso.with(context).load(sss[0]).resize(500, 281).centerCrop().into(imageView);
            }
        };
        Thread th = new Thread(new Runnable() {
            @Override
            public void run() {
                sss[0] = "http://teleflora.edgesuite.net/images/products/HW0_706075.jpg";
                hh.sendEmptyMessage(0);

            }
        });
        th.start();
    }
}

Android Picasso 没有加载要从处理程序查看的 img

Android Picasso not loading img to view from handler

java

android

multithreading

handler

picasso