如何在对话框上添加进度条

Question

每当我想在我的应用程序中显示进度条时，我都会调用此方法，此方法会将 ProgressBar 添加到我的布局中。

问题：我想在对话框上显示这个进度条，但对话框总是显示在上面。遇到这种情况该怎么办？

public static void showProgressBar(@NonNull final Activity activity) {
    try {
        if (activity == null) {
            LogManager.printStackTrace(new NullActivityException());
            return;
        }
        View view = activity.findViewById(android.R.id.content);
        if (view == null) {
            LogManager.printStackTrace(new NullPointerException("content view is null"));
            return;
        }
        View rootView = activity.findViewById(android.R.id.content).getRootView();
        if (rootView == null || !(rootView instanceof ViewGroup)) {
            LogManager.printStackTrace(new NullPointerException("rootView is null or not an instance of ViewGroup"));
            return;
        }
        final ViewGroup layout = (ViewGroup) rootView;

        final ProgressBar progressBar = new ProgressBar(activity);
        progressBar.setIndeterminate(true);
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
            Drawable wrapDrawable = DrawableCompat.wrap(progressBar.getIndeterminateDrawable());
            DrawableCompat.setTint(wrapDrawable, ContextCompat.getColor(activity, R.color.colorAccent));
            progressBar.setIndeterminateDrawable(DrawableCompat.unwrap(wrapDrawable));
        }
        RelativeLayout.LayoutParams params = new
                RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
                RelativeLayout.LayoutParams.MATCH_PARENT);
        final RelativeLayout rl = new RelativeLayout(activity);
        rl.setBackgroundColor(ActivityCompat.getColor(activity, R.color.tc_hint_grey_alpha));
        rl.setClickable(true);
        rl.setTag("#$UniqueProgressBar");
        ViewGroup.LayoutParams params2 = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                120);
        rl.setGravity(Gravity.CENTER);
        rl.addView(progressBar, params2);
        LogManager.i("ProgressBar", "ProgressUtils.showProgressBar->called");
        layout.addView(rl, params);

        mRunnable = new Runnable() {
            @Override
            public void run() {
                LogManager.i("ProgressBar", "ProgressUtils.showProgressBar->120 secs timeout");
                hideProgressBar(activity);
            }
        };
        mHandler = new Handler();
        mHandler.postDelayed(mRunnable, 120000);

        LogManager.i("ProgressBar", "Added");
    } catch (Exception e) {
        LogManager.printStackTrace(e);
    }

}

Answer 1

尝试这样的事情，它应该可以在全球范围内工作：

public static void showProgressBar(@NonNull final Activity activity) {
    try {
        if (activity == null) {
            LogManager.printStackTrace(new NullActivityException());
            return;
        }

        final WindowManager wm = (WindowManager) activity.getApplicationContext().getSystemService(Activity.WINDOW_SERVICE);

        final ProgressBar progressBar = new ProgressBar(activity);
        progressBar.setIndeterminate(true);
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
            Drawable wrapDrawable = DrawableCompat.wrap(progressBar.getIndeterminateDrawable());
            DrawableCompat.setTint(wrapDrawable, ContextCompat.getColor(activity, R.color.colorAccent));
            progressBar.setIndeterminateDrawable(DrawableCompat.unwrap(wrapDrawable));
        }

        WindowManager.LayoutParams windowLayoutParams = new WindowManager.LayoutParams();
                windowLayoutParams.gravity = Gravity.CENTER;
                windowLayoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_PANEL;
                windowLayoutParams.token = activity.getWindow().getDecorView().getWindowToken();
                windowLayoutParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;

        windowLayoutParams.height = LayoutParams.MATCH_PARENT;
        windowLayoutParams.width = LayoutParams.MATCH_PARENT;

        wm.addView(progressBar, windowLayoutParams);

        LogManager.i("ProgressBar", "ProgressUtils.showProgressBar->called");
        layout.addView(rl, params);

        mRunnable = new Runnable() {
            @Override
            public void run() {
                LogManager.i("ProgressBar", "ProgressUtils.showProgressBar->120 secs timeout");
                hideProgressBar(activity);
            }
        };
        mHandler = new Handler();
        mHandler.postDelayed(mRunnable, 120000);

        LogManager.i("ProgressBar", "Added");
    } catch (Exception e) {
        LogManager.printStackTrace(e);
    }

}

Answer 2

Android 有一个ProgressDialog 以 AlertDialog 作为基类，并添加了进度功能：

  ProgressDialog progress = new ProgressDialog(this);
  progress.setMessage("Downloading Music");
  progress.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
  progress.setIndeterminate(true);
  progress.setProgress(0);
  progress.show();

和增量：

  progress.setProgress( ... );

查看here 了解更多信息。

Answer 3

如果您正在为您的对话框使用自定义设计布局，您可以将进度条放在您的进度对话框自定义布局中并从那里使用它。然后当你的对话框显示时，它会显示在你的对话框上方。

Answer 4

尝试为您的对话框使用对话框片段并在对话框片段的布局内填充进度条。有关更多信息，请查看此链接。

https://developer.android.com/reference/android/app/DialogFragment.html

Answer 5

试试这个

ProgressDialog dialog = ProgressDialog.show(MyActivity.this, "", 
                        "Loading. Please wait...", true);

这将为您提供一个进度条，可根据您的要求使用。

Answer 6

我能想到的一件事是在视图中有抽象的对话框片段或带有进度条的普通自定义对话框。话虽如此，您的课程应该使您能够附加对话框或其他视图。这样，每次您想显示对话框时，扩展该类或使用该类并提供视图。

或者

再次在对话框中调用进度对话框。但我更喜欢第一个。

Answer 7

simpleProgressBar.setMax(100); 
simpleProgressBar.setProgress(50); 

Answer 8

对ProgressBar使用以下功能代码：

public void Progressbar_Timer() {
    final ProgressDialog dialog = new ProgressDialog(AddEventImageLayout.this);
    dialog.setTitle("Placeing selected image...");
    dialog.setMessage("Please wait..");
    dialog.setIndeterminate(true);
    dialog.setCancelable(false);
    dialog.show();

    long delayInMillis = 10000;
    Timer timer = new Timer();
    timer.schedule(new TimerTask() {
        @Override
        public void run() {
            dialog.dismiss();
        }
    }, delayInMillis);
    check = 2;
}