Android how to get height and width in onCreateView

Question

I create my presentation programmatically, not xml at all and need the real size of the area I work in. I used this code:

public static class DummySectionFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (container == null) { return null; } Context context = getActivity(); int tabNo = getArguments().getInt(ARG_SECTION_NUMBER); Display display = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); // check display size to figure out what image resolution will be loaded DisplayMetrics metrics = new DisplayMetrics(); display.getMetrics(metrics); Point size = new Point(); display.getRealSize(size); display.getSize(size); int width = size.x; int height = size.y; 

but this does not take into account all other “decorations”, such as the title bar and navigation bar

The docs say don't use display metrics to get the size, but how can I find out the size of the view in onCreateView? I tried container.getHeight () but returns 0

I assume the problem is that the view has not been created yet, but there must be a parent onCreateView element that knows how big the view will be?

how do i find this?

thanks

FYI, this works:

 @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (container == null) { return null; } Context context = getActivity(); int tabNo = getArguments().getInt(ARG_SECTION_NUMBER); Display display = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); // check display size to figure out what image resolution will be loaded DisplayMetrics metrics = new DisplayMetrics(); display.getMetrics(metrics); Point size = new Point(); display.getRealSize(size); display.getSize(size); int width = size.x; int height = size.y; switch (metrics.densityDpi) { case DisplayMetrics.DENSITY_XXHIGH: height -= 72; break; case DisplayMetrics.DENSITY_XHIGH: height -= 64; break; case DisplayMetrics.DENSITY_HIGH: height -= 48; break; case DisplayMetrics.DENSITY_MEDIUM: height -= 32; break; case DisplayMetrics.DENSITY_LOW: height -= 24; break; default: Log.e("onCreateView", "Unknown density"); } } 

but that doesn't seem like a clean way to do it. I guessed about xhigh and xxhigh, I haven't found the actual numbers yet

ALSO I must add that the view is created from onTabSelected in MainActivity, like this

 @Override public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { // When the given tab is selected, show the tab contents in the // container view. Fragment fragment = new DummySectionFragment(); Bundle args = new Bundle(); args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, tab.getPosition() + 1); fragment.setArguments(args); getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment).commit(); } 

Answer 1

I think I have

I think getSize returns realsize minus the navigation bar, so I need to subtract the action bar

so now i do this:

 @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (container == null) { return null; } Context context = getActivity(); int tabNo = getArguments().getInt(ARG_SECTION_NUMBER); Display display = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); // check display size to figure out what image resolution will be loaded DisplayMetrics metrics = new DisplayMetrics(); display.getMetrics(metrics); Point size = new Point(); display.getSize(size); int width = size.x; int height = size.y; TypedValue tv = new TypedValue(); int actionBarHeight=0; if (context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) { actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data,getResources().getDisplayMetrics()); } height -= actionBarHeight; //Log.d("MainActivity", "onCreateView tabNo="+tabNo +" display width="+width+" height="+height+" rotation="+rotation); switch(tabNo){ case 1: return onCreateViewScoreFragment(context, width, height); case 2: return onCreateViewFilesFragment(context, inflater, width>height); default: return onCreateViewSettingsFragment(context, inflater, width>height); } } 

It works on my tablet, I'm not 100% sure about other devices, I will have to wait and see what my clients say.