android - How to create chat-like footer layout in Xamarin Forms? -


i'm using xamarin forms create chat-like app abdroid , uwp. want create footer layout looks this (meaning 2 buttons , editor in horizontal orientation).

i have created layout in image using following xaml:

<grid >         <grid.margin>             <onplatform x:typearguments="thickness">                 <on platform="android">5,0,5,5</on>                 <on platform="windows">5,0,5,25</on>             </onplatform>         </grid.margin>         <grid.columndefinitions>             <columndefinition width="*"></columndefinition>             <columndefinition width="auto"></columndefinition>             <columndefinition width="auto"></columndefinition>         </grid.columndefinitions>          <editor x:name="messagetext"  text="" grid.column="0" />         <local:roundedbutton x:name="button2" clicked="click2"  backgroundcolor="#000000" grid.column="1" widthrequest="50" heightrequest="50" borderradius="25" verticaloptions="center" />         <local:roundedbutton x:name="button1" clicked="click1"  backgroundcolor="#000000" grid.column="2" widthrequest="50" heightrequest="50" borderradius="25" verticaloptions="center"/> </grid>

the problem layout editor doesn't display more 1 line. when continue writing text longer editor's width this. can see first line cut-of , bottom of displayed when start new line.

as far know, pretty easy create kind of layout in android using linearlayout , layout_weight attribute. try avoid creating renderer whole footer now.

edit

here example wrote in android wanted result:

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="horizontal"     android:layout_width="match_parent"     android:layout_height="match_parent" >   <edittext      android:layout_height="wrap_content"     android:layout_width="0dp"     android:layout_weight="1"     android:hint="enter message"/>   <button     android:layout_height="wrap_content"     android:layout_width="wrap_content"     android:text="hi"/>   <button     android:layout_height="wrap_content"     android:layout_width="wrap_content"     android:text="bi"/> </linearlayout>

here result:

wanted result

to grow editor when text changes, want trigger invalidatemeasure method force layout resize. it's protected method, need subclass editor control , make following change:

public class customeditor : editor {           public customeditor ()          {         textchanged += (sender, e) =>          {              invalidatemeasure();          };          }  }

Comments

Post a Comment

Popular posts from this blog

python - Operations inside variables -

this question has answer here: evaluating mathematical expression in string 12 answers i want make python script finds maximum possible output using 2 operations. problem says there syntax error @ 2nd last line, in b in there. how can fix it? x = 0 = int(input("1st number:")) c = int(input("2nd number:" )) e = int(input("3rd number:" )) in range(4): if == 0: b = "+" elif == 1: b = "-" elif == 2: b = "/" else: b = "*" j in range(4): if j == 0: d = "+" elif j == 1: d = "-" elif j == 2: d = "/" else: d = "*" k = b c d e print(k) if you're after variables e on single line, couldn...
Read more

Generic Map Parameter java -

i having lot of methods of type: public static list<eduusers> getdetails(class c, map<string, integer> params) { list<eduusers> details = null; session session = hibernateutil.getsessionfactory().opensession(); transaction tx = null; try { tx = session.begintransaction(); criteria cr = session.createcriteria(c); (map.entry<string, integer> entry : params.entryset()) { cr.add(restrictions.eq(entry.getkey(), entry.getvalue())); } details = cr.list(); tx.commit(); } catch (exception asd) { log.debug(asd.getmessage()); if (tx != null) { tx.commit(); } } { session.close(); } return details; } i trying have generic method them , have written far: public static <t> list<t> getdetails(class<t> c, class<t> b) { l...
Read more

arrays - What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it? -

what arrayindexoutofboundsexception mean , how rid of it? here code sample triggers exception: string[] name = {"tom", "dick", "harry"}; for(int = 0; i<=name.length; i++) { system.out.print(name[i] +'\n'); } your first port of call should documentation explains reasonably clearly: thrown indicate array has been accessed illegal index. index either negative or greater or equal size of array. so example: int[] array = new int[5]; int boom = array[10]; // throws exception as how avoid it... um, don't that. careful array indexes. one problem people run thinking arrays 1-indexed, e.g. int[] array = new int[5]; // ... populate array here ... (int index = 1; index <= array.length; index++) { system.out.println(array[index]); } that miss out first element (index 0) , throw exception when index 5. valid indexes here 0-4 inclusive. correct, idiomatic for statement here be: for (int index = 0; index <...
Read more