如何在Android中启动和停止ProgressBar？

Question

I have an activity that calls a second java class. I want after the second class is called to show a progressbar and then return to normal activity execution. I found some other threads but i couldn't make the progressbar to stop.

Answer 1

There's a full example over here .

Quote:

Declare your progress dialog:

 ProgressDialog progress; 

When you're ready to start the progress dialog:

 progress = ProgressDialog.show(this, "dialog title", "dialog message", true); 

and to make it go away when you're done:

 progress.dismiss(); 

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Here's a little thread example for you:

 // Note: declare ProgressDialog progress as a field in your class. progress = ProgressDialog.show(this, "dialog title", "dialog message", true); new Thread(new Runnable() { @Override public void run() { // do the thing that takes a long time runOnUiThread(new Runnable() { @Override public void run() { progress.dismiss(); } }); } }).start(); 

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ProgressDialog is deprecated, so you might want to use a ProgressBar.

I've found this post about deleting one of them.

Well, I think this is rather ridiculous, but here is how I fixed it.

In my xml for the ProgressBar , I added android:visibility="gone" to hide it by default. Then, in my code, I first told it to display ( View.VISIBLE ) before it tried getting the server list, then I told it to hide ( View.GONE ) after it was done. This worked (I could see the progress indicator while the data loaded, then it went away). So I suppose I couldn't get it to hide in the code because the code is not what forced it to be visible to begin with... That seems like a bug to me.

Answer 2

Its very Simple:

to show a Progress

ProgressDialog dialog = ProgressDialog.show(getContext(), "Title", "Message");

and to stop it:

dialog.dismiss();