How to hide Android title bar after window creation?

How to hide the title bar through code in android describes a simple way to hide the window title bar, but it needs to be done before calling setContentView. What if I want to do i开发者_运维知识库t later? In my case, I'd like to do it after a web view has finished loading content and I no longer need to show progress in the title bar.

Here's a couple options that involve ditching the title bar altogether:

• Inflate a layout using LayoutInflater. This layout will essentially be the LinearLayout or RelativeLayout that holds all of the components for your title bar.
• or if that sounds like too much of a hastle you can create a title bar in your xml of the activity with the visibility set to gone and use titleBarLayout.setVisibility(View.VISIBLE); when web view is done loading

Pseudo code:

RelativeLayout activityLayout = (RelativeLayout) findViewById(R.id.my_layout);
LayoutInflater inflater       = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

public void onWebViewFinishLoading() {
      LinearLayout myTitleBar = inflater.inflate(R.layout.my_title_bar, activityLayout, false);

      //Set the view to the top of the screen
      RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
      params.addRule(RelativeLayout.ALIGN_PARENT_TOP);
      myTitleBar.setLayoutParams(params);

      //set up buttons, listeners, etc.
}

Personally, I'd go with the LayoutInflater option. But it's up to you. I believe you can also add animations to your title bar being displayed with either option, which could be a nice addition.

Or call this before setContentView:

requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);

This will return false if a custom title bar is not supported, so you may want to check for that. This is called after setContentView:

getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title_bar);

Assign the parent layout of the xml file (the LinearLayout or RelativeLayout that holds all of the views) an id with android:id="@+id/custom_title_layout".

Now,

LinearLayout titleBarLayout = (LinearLayout) findViewById(R.id.custom_title_layout);

And toggle the title bar to be there or not using :

titleBarLayout.setVisibility(View.GONE);  //View.VISIBLE to show

If you are using API 11 and above

ActionBar actionBar = getActionBar();
actionBar.hide(); // slides out
actionBar.show(); // slides in

If you want to hide title bar in an activity:

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    ...
}

Please refer to http://mgmblog.com/2008/12/08/hide-the-title-bar-in-an-android-view-by-using-the-window-class/

This worked for me

in onCreate

this.getWindow().requestFeature(Window.FEATURE_PROGRESS);
getWindow().setFeatureInt(Window.FEATURE_PROGRESS, Window.PROGRESS_VISIBILITY_ON);

and then in WebViewClient

    myWebView.setWebViewClient(new WebViewClient() {

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
            activity.setTitle("Loading...");
            View title = getWindow().findViewById(android.R.id.title);
            View titleBar = (View) title.getParent();
            titleBar.setBackgroundColor(Color.BLACK);
            titleBar.setVisibility(View.VISIBLE);
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
            activity.setTitle("");
            View title = getWindow().findViewById(android.R.id.title);
            View titleBar = (View) title.getParent();
            titleBar.setVisibility(View.GONE);
        }

    });

in xml use

<activity android:name=".ActivityName" 
      android:theme="@android:style/Theme.NoTitleBar">