java - 在我的课堂上实现 Thread Android？

Question

我想知道如何在此类中实现一个线程以使其免受 ANR（应用程序无响应）问题的影响

public class myClass {


    private static String LOG_TAG = Root.class.getName();

    public boolean isDeviceRooted() throws IOException {

        if (checkRootMethod1()){return true;}
        if (checkRootMethod2()){return true;}
        if (checkRootMethod3()){return true;}
        return false;

    }
    public boolean checkRootMethod1(){
        String buildTags = android.os.Build.TAGS;

        if (buildTags != null && buildTags.contains("test-keys")) {
            return true;
        }
        return false;
    }

    public boolean checkRootMethod2(){
        try {
            File file = new File("/system/app/Superuser.apk");
            if (file.exists()) {
                return true;
            }
            else {

                return false;
            }
        } catch (Exception e) {

        }

        return false;
    }

    public boolean checkRootMethod3() {
        if (new ExecShell().executeCommand(SHELL_CMD.check_su_binary) != null){
            return true;
        }else{
            return false;
        }
    }


        }

例如，如果在我按下按钮时执行此代码，如果我多次按下此按钮，我的应用程序就会出现 ANR。

Answer 1

您不想使用 a Thread，而是使用AsyncTask. 就是这样：

根据以下内容，找出您的应用程序需要什么：AsyncTask<TypeOfVarArgParams, ProgressValue, ResultValue>

一些灵感：

public class MyClass {
      //Something

      public MyClass() {
            new BackgroundTask().execute("Hello World");
      }
}

private class BackgroundTask extends AsyncTask<String, Void, String> {

      @Override
      protected void onPreExecute() {
            // Prepare your background task. This will be executed before doInBackground
      }

      @Override
      protected String doInBackground(String... params) {
            // Your main code goes here

            String iAmAString = "I have done something very heavy now...";
            return iAmAString;
      }      

      @Override
      protected void onPostExecute(String result) {
            // Whatever should happen after the background task has completed goes here
      }



      @Override
      protected void onProgressUpdate(Void... values) {
            // In here, you can send updates to you UI thread, for example if you're downloading a very large file.
      }
}   

Answer 2

    Thread thread = new Thread()
    {
        @Override
        public void run()
        {
            myClass rootChecker = new myClass();
            isRooted = rootChecker.isDeviceRooted();
        }
    };