我有带有 onViewCreate 方法的片段。
我正在用一些行和列创建 TableLayout。我想获得单个单元格的高度和宽度（每个单元格都具有相同的宽度和高度）。但是，当 cell.getHeight() 和 cell.getWidth() 方法都返回 0 时。更重要的是，当我使用 onPreDraw() 方法时，
private TextView cell
private int finalHeight;
private int finalWidth;
public View onCreateView( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState ) {
Context contextThemeWrapper = new ContextThemeWrapper( getActivity(), android.R.style.Theme_Holo_Light );
LayoutInflater localInflater = inflater.cloneInContext( contextThemeWrapper );
View thisView = localInflater.inflate( R.layout.fragment_wizard_table, container, false );
final TableLayout table = new TableLayout( App.getAppContext() );
for (hoursIter = 0; hoursIter < hours.length; hoursIter++) {
TableRow row = new TableRow( App.getAppContext() );
for (daysIter = 0; daysIter < initDays().length; daysIter++) {
cell = new TextView( App.getAppContext() )
// cell.getWidth() here return 0;
}
}
// cell.getWidth() here still returns 0 ;
cell.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
cell.getViewTreeObserver().removeGlobalOnLayoutListener(this);
finalWidth = cell.getWidth(); // it's ok here ( work )
finalHeight = cell.getHeight(); // it's ok here (works)
}
});
// BUT NOW:
Log.d(TAG, finalWidht + " " ); // returns still 0 ? WHY ?
}
提前感谢您的帮助！