Android 特定计算后对话框关闭

Question

我遇到了以下问题：

我像这样使用对话框创建了一个等待微调器

final Dialog progDialog = new Dialog(context);
progDialog.setContentView(R.layout.progress_dialog);
progDialog.setTitle("Calculating...");
progDialog.setCancelable(false);
progDialog.setCanceledOnTouchOutside(false);

WindowManager.LayoutParams lp = progDialog.getWindow().getAttributes();
lp.dimAmount = 0.7f;
progDialog.show();

之后，我在后台计算一些东西

for()...
    for()...

计算完成后，我想用

关闭我的对话框

progDialog.dismiss();

但是，这导致我的对话框根本不显示。当我删除最后一行时，会显示对话框但不会关闭。有解决办法吗？

Answer 1

你最好试试 AsyncTask

private class YourAsyncTask extends AsyncTask<Void, Void, Void> {
    private ProgressDialog progDialog;

    public YourAsyncTask(MyMainActivity activity) {
        progDialog = new ProgressDialog(activity);
    }

    @Override
    protected void onPreExecute() {
       progDialog.setContentView(R.layout.progress_dialog);
       progDialog.setTitle("Calculating...");
       progDialog.setCancelable(false);
       progDialog.setCanceledOnTouchOutside(false);

       progDialog.show();
    }
    @Override
    protected Void doInBackground(Void... args) {
        // do background work here
        return null;
    }
    @Override
    protected void onPostExecute(Void result) {
         // do UI work here
        if (progDialog.isShowing()) {
            progDialog.dismiss();
        }
    }
}

在 Main Activity 中使用以上代码。并且，在 doInBackground.

中进行计算

要为您的计算设置计时器，请尝试以下代码：

 Runnable progressRunnable = new Runnable() {

        @Override
        public void run() {
            progDialog.cancel();
        }
    };

    Handler pdCanceller = new Handler();
    pdCanceller.postDelayed(progressRunnable, 3000);

添加show/hide:

progDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
    @Override
    public void onCancel(DialogInterface dialog) {
        theLayout.setVisibility(View.GONE);
    }
});

更新:

ProgressDialog class 自 API 26

起已弃用

Android 特定计算后对话框关闭

Android dialog dismiss after certain computation

java

android

dialog