android - Can i pass uri value from onActivityResult() to onClick()? -

- 

public void oncreate(bundle savedinstancestate) {   super.oncreate(savedinstancestate);   setcontentview(r.layout.main);   msurfaceview01 = (surfaceview) findviewbyid(r.id.msurfaceview1);    msurfaceholder01 = msurfaceview01.getholder();   msurfaceholder01.addcallback(ex10_04.this);    mbutton02 = (button)findviewbyid(r.id.buttonobj);   mbutton02.setonclicklistener( new button.onclicklistener(){     public void onclick(view arg0) {         intent intent = new intent( intent.action_get_content );         intent.settype("audio/*");                   intent destintent = intent.createchooser( intent, "select audio" ); //pick audio file         startactivityforresult( destintent, 0 );     }   });  }  protected void onactivityresult(int requestcode, int resultcode, intent data) { super.onactivityresult(requestcode, resultcode, data);  if ( resultcode == result_ok ) {      uri uri = data.getdata();     if( uri != null )     {         drawo();//it draw circle     }     else     {       e.printstacktrace();     } }

the circle not show..... when put drawo() next to

  msurfaceholder01.addcallback(ex10_04.this);

it draw circle !

if want draw circle in onactivityresult event

what shuld ?

or if can pass uri onclick function ?

public void drawo() {  canvas mcanvas01 = msurfaceholder01.lockcanvas(null); mcanvas01.drawcolor(getresources().getcolor(r.drawable.white));  paint mpaint01 = new paint(); mpaint01.setstyle(paint.style.fill); mpaint01.setcolor(getresources().getcolor(r.drawable.red)); mpaint01.setstrokewidth(1.0f); ........ ....... }

1) circle not drawn because surface not created yet. try this:

    boolean needdrawing = false;      public void onresume() {        if (needdrawing) {            draw0();            needdrawing = false;        }        ...     }  protected void onactivityresult(int requestcode, int resultcode, intent data) { super.onactivityresult(requestcode, resultcode, data);  if ( resultcode == result_ok ) {      uri uri = data.getdata();     if( uri != null )     {        needdrawing = true;//it asks draw circle     }     else     {       e.printstacktrace();     } }

2) pass uri declare field uri , assign in onactivityresult , in onclick() check if not null, use , invalidate it


Comments

Post a Comment

Popular posts from this blog

c++ - How do I get a multi line tooltip in MFC -

-
right now, have tool tip pops when hover on edit box. problem tool tip contains multiple error messages , in 1 long line. need have each error message on own line. error messages contained in cstring new line seperating them. my existing code below. bool ontooltiptext(uint, nmhdr* pnmhdr, lresult* presult) { assert(pnmhdr->code == ttn_needtexta || pnmhdr->code == ttn_needtextw); // need handle both ansi , unicode versions of message tooltiptexta* pttta = (tooltiptexta*)pnmhdr; tooltiptextw* ptttw = (tooltiptextw*)pnmhdr; // tchar szfulltext[256]; cstring strtiptext=_t(""); uint nid = pnmhdr->idfrom; if (pnmhdr->code == ttn_needtexta && (pttta->uflags & ttf_idishwnd) || pnmhdr->code == ttn_needtextw && (ptttw->uflags & ttf_idishwnd)) { // idfrom hwnd of tool nid = ::getdlgctrlid((hwnd)nid); } //m_errprojaccel[ch] contains 1 or more error messages each...
Read more

asp.net - In javascript how to find the height and width -

-
i having .aspx , masterpage page. in masterpage loading aspx page . in aspx page design using generating table structure using code-behind server in javascript how find height , width . regards, kumar if you're looking table height , width, should it var tbl = document.getelementbyid('tbldemo'); alert(tbl.offsetwidth + '\n' + tbl.offsetheight);
Read more

c# - DataTable to EnumerableRowCollection -

-
i have datatable according client requirement can contain invalid date "00/00/1999",null,empty string.(typed datset) when collect them enumerables wish convert of invalid forms empty string. (i.e) enumerablerowcollection<datarow> query = order in _table.asenumerable() select new { orderdate= string.isnullorempty(convert.tostring(order.field<datetime>("orderdate")) || (how check date invalid date) ? string.empty : order.field<datetime>("orderdate") } how check whether date valid date or not? datetime.tryparse...like given current code: datetime date; enumerablerowcollection<datarow> query = order in _table.asenumerable() select new { orderdate= string.isnullorempty(convert.tostring(order.field<datetime>("orderdate")) || !datetime.tryparse(convert.tostring(order.field<datetime...
Read more