android - How can I set invisible area in ListView? -

-

listview image

enter image description here

hi. i'm using listview in android app. want set listview above image.

app user can see left , center area only. , want set component in right area, area must not visible.

how can this?

here current layout xml code : 

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" android:padding="8dp" >  <!-- left area start (visible) --> <linearlayout     android:layout_width="0dp"     android:layout_height="match_parent"     android:layout_marginright="5dp"     android:layout_weight="1"     android:orientation="vertical" >      <linearlayout         android:layout_width="match_parent"         android:layout_height="match_parent"         android:orientation="vertical" >           <imageview             android:layout_width="match_parent"             android:layout_height="0dp"             android:layout_weight="2"             android:gravity="center"             android:src="@drawable/ic_launcher" />          <button             android:layout_width="match_parent"             android:layout_height="0dp"             android:layout_weight="1"             android:gravity="center"             />      </linearlayout> </linearlayout> <!-- left area end -->   <!-- center area (visible) --> <linearlayout     android:layout_width="0dp"     android:layout_height="match_parent"     android:layout_weight="2"     android:orientation="vertical" >      <linearlayout         android:layout_width="match_parent"         android:layout_height="0dp"         android:layout_weight="1"         android:orientation="horizontal" >          <button             android:layout_width="0dp"             android:layout_height="wrap_content"             android:layout_margin="2dp"             android:layout_weight="2"             />          <button             android:layout_width="0dp"             android:layout_height="wrap_content"             android:layout_margin="2dp"             android:layout_weight="2"             />     </linearlayout>       <linearlayout         android:layout_width="match_parent"         android:layout_height="0dp"         android:layout_weight="1"         android:orientation="horizontal" >          <button             android:layout_width="0dp"             android:layout_height="wrap_content"             android:layout_margin="2dp"             android:layout_weight="1"             />          <button             android:layout_width="0dp"             android:layout_height="wrap_content"             android:layout_margin="2dp"             android:layout_weight="1"             />     </linearlayout>      <linearlayout         android:layout_width="match_parent"         android:layout_height="0dp"         android:layout_weight="1"         android:orientation="horizontal" >          <button             android:layout_width="0dp"             android:layout_height="wrap_content"             android:layout_margin="2dp"             android:layout_weight="1"             />          <button             android:layout_width="0dp"             android:layout_height="wrap_content"             android:layout_margin="2dp"             android:layout_weight="1"             />     </linearlayout>  </linearlayout> <!-- center area end -->   <!-- right area start (invisible) -->     <!-- don't know --> <!-- right area end -->

you can try element right layout: 

android:visibility="gone"

about element:

this view invisible, , doesn't take space layout purposes


Comments

Post a Comment

Popular posts from this blog

c# - How Configure Devart dotConnect for SQLite Code First? -

-
can configure following sample code ? when run following code, error : no entity framework provider found ado.net provider invariant name 'devart.data.sqlite' setting in machine.config <system.data> <dbproviderfactories> <add name="dotconnect sqlite" invariant="devart.data.sqlite" description="devart dotconnect sqlite" type="devart.data.sqlite.sqliteproviderfactory, devart.data.sqlite, version=4.6.287.0, culture=neutral, publickeytoken=09af7300eec23701" /> </dbproviderfactories> </system.data> after add below block code in app.config <?xml version="1.0"?> <configuration>   <configsections> <!-- more information on entity framework configuration, visit http://go.microsoft.com/fwlink/?linkid=237468 --> <section name="entityframework" type="system.data.entity.internal.configfile.entityframeworksection, entit...
Read more

java - Copying object fields -

-
what best way of copying classes when need have 2 independent variables? have simple class: public class myclass { boolean = false; string b= "not empty"; } do need make method : assign(myclass data ) { a= data.a; b= data.b; } is there automatic method copy (duplicate) objects in java? do need make method : pretty close. instead of making method, should make constructor. such constructors called copy constructor , , create them this: myclass(myclass data) { = data.a; b = data.b; } and create copy of instance, use constructor this: myclass obj1 = new myclass(); myclass obj2 = new myclass(obj1); copy constructor can tedious : using copy constructor create deep-copy can tedious, when class has mutable fields. in case, assignment create copy of reference, , not object itself. have create copy of fields (if want deep copy). can go recursive. a better way create deep copy serialize , deserialize object. why not use clone()? ...
Read more

c++ - Clear the memory after returning a vector in a function -

-
i have function processes , stores lot of data in , returns results vector of class. amount of data stored in function tremendous , want clear storage memory of function after finished job. necessary (does function automatically clear memory) or should clear memory function? update: vector<customers> process(char* const *filename, vector<int> id) { vector<customers> list_of_customers; (perform actions) return list_of_customers; } variables defined locally within function automatically released @ end of function scope. destructors objects called, should free memory allocated objects (if objects coded correctly). example of such object std::vector . anything you've allocated new must have corresponding delete release storage. try avoid doing own allocation , use raii instead, i.e. containers or smart pointers.
Read more