Android Studio - AlertDialog 按钮监听器和 ProgressBar 视图

Question

这是测试线程及其工作原理的代码！ （看起来并没有真正连接）当警报对话框消失时，我想通过按下是按钮添加一个进度条，但它不起作用。我将可见性设置为之前消失，之后可见。似乎是什么问题？我选对了，其他地方也没有错。文字也没有改变.....请帮助:)

private void connectRequest() {    

    AlertDialog.Builder builder = new AlertDialog.Builder(ThreadActivity2.this);
    AlertDialog dialog = builder.setMessage("Do you request Remote Access?")
            .setPositiveButton("Yes", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();

                    accessTv.setText("Requesting Remote Access ...");
                    accessPgb.setVisibility(View.VISIBLE);

                    try {
                        Thread.sleep(5700); 

                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    accessTv.setText("Server Access Successful!");
                    accessPgb.setVisibility(View.GONE);

                }
            })
            .setNegativeButton("No", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {

                }
            }).create();

    dialog.show();


}

Answer 1

尝试使用java.util.concurrent.TimeUnit:

TimeUnit.SECONDS.sleep(1);

睡一秒钟或

TimeUnit.MINUTES.sleep(1);