Android 回调机制

1.定义接口

/**
 * @author zhou
 *
 */
public interface CallBack {
    public void  tellSomeOne(String str);
}

2.定义工具类

public class Tools{
    public String aaa="";
    public void doSomeSth()
    {
    
    aaa = "asdasda";
    }
    public void CallSomeOne(CallBack call)
    {
    aaa="a1111111111111111111";
    call.tellSomeOne(aaa);

    }
}

3.调用工具类

private void initView() {
    // TODO Auto-generated method stub
    btnConn =(Button)findViewById(R.id.btnConn);
    btnConn.setOnClickListener(new OnClickListener() {
        
        @Override
        public void onClick(View v) {
        // TODO Auto-generated method stub
        Tools tool = new Tools();
        tool.doSomeSth();
        tool.CallSomeOne(new CallBack() {
            
            @Override
            public void tellSomeOne(String str) {
            // TODO Auto-generated method stub
            Toast.makeText(HttpAdapatorSerActivity.this, str, Toast.LENGTH_LONG).show();
            }
        });
        }
    });
    }

参考：http://blog.163.com/zhou_411424/blog/static/197362156201251114740616/ 谢谢原作者