Android，AsyncTask，检查状态

使用AsyncTask来检查Android应用程序的状态

java
public class CheckStatusTask extends AsyncTask {
    private ProgressDialog progressDialog;
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        // 在执行任务之前显示进度条
        progressDialog = new ProgressDialog(MainActivity.this);
        progressDialog.setMessage("正在登录...");
        progressDialog.show();
    }
    @Override
    protected Boolean doInBackground(Void... voids) {
        // 模拟耗时的登录操作
        try {
            Thread.sleep(2000); // 假设登录需要2秒钟
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        
        // 返回登录结果
        return true;
    }
    @Override
    protected void onPostExecute(Boolean result) {
        super.onPostExecute(result);
        // 隐藏进度条，并更新UI显示登录结果
        progressDialog.dismiss();
        if (result) {
            Toast.makeText(MainActivity.this, "登录成功", Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(MainActivity.this, "登录失败", Toast.LENGTH_SHORT).show();
        }
    }
}

java
public void onLoginButtonClick() {
    CheckStatusTask task = new CheckStatusTask();
    task.execute();
}