有没有办法在 AsyncTask 中普遍显示 AlertDialog？

Question

我想在 AsyncTask 的其他 class 中显示 AlertDialog。示例>

public class WardListAsyncTask extends AsyncTask<HashMap<String, String>, String, Object> {
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

    @Override
    protected Object doInBackground(HashMap<String, String>... params) {
      ...
    }

   @Override
    protected void onPostExecute(Object result) {
        ConfirmAlertDialog(ez_WardList.this,"HI?"); 
        //this method is in another Class & I want to use this method another Asynctask also..
    }

并且 ConfirmAlertDialog 是...

    Context g_ctx;
String g_content;
public void ez_ConfirmAlertDialog(Context ctx, String content) {
    this.g_ctx=ctx;
    this.g_content=content;

    runOnUiThread(new Runnable() {
        @Override
        public void run() {
            AlertDialog.Builder builder = new AlertDialog.Builder(g_ctx, AlertDialog.THEME_HOLO_LIGHT);
            builder.setMessage(g_content).setPositiveButton(getString(R.string.kor_confirm),
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int whichButton) {

                        }
                    });

            AlertDialog alertDialog = builder.create();
            alertDialog.show();
            alertDialog.getWindow().setLayout(displayWidth / 2, LayoutParams.WRAP_CONTENT);
            alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(Color.rgb(10, 174, 239));

        }
    });

}

我认为g_ctx.class.runonuiThread ...但我不能调用runonuithread ...

我该如何解决？

Answer 1

您可以使用处理程序在主线程中调用它

    new Handler(Looper.getMainLooper()).post(new Runnable() {
        @Override
        public void run() {
             // Your code here
        }
    });

Answer 2

Activity class 中存在 runOnUiThread 方法。所以应该将 Activity 传递给你的 class。示例：

public class MyClass{


public void ez_ConfirmAlertDialog(Activity activity, String content) {
    this.g_ctx=ctx;
    this.g_content=content;

    if(activity == null){
       return;
    }

    activity.runOnUiThread(new Runnable() {
        @Override
        public void run() {
            AlertDialog.Builder builder = new AlertDialog.Builder(g_ctx, AlertDialog.THEME_HOLO_LIGHT);
            builder.setMessage(g_content).setPositiveButton(getString(R.string.kor_confirm),
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int whichButton) {

                        }
                    });

            AlertDialog alertDialog = builder.create();
            alertDialog.show();
            alertDialog.getWindow().setLayout(displayWidth / 2, LayoutParams.WRAP_CONTENT);
            alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(Color.rgb(10, 174, 239));

        }
    });

}

}

有没有办法在 AsyncTask 中普遍显示 AlertDialog？

Is there a way to show AlertDialog in AsyncTask commonly?

android

android-asynctask

android-alertdialog