Develop Reference

Visibility changes "by itself"

I have this ListView with an Adapter that extends BaseAdapter. Inside the
public View getView(final int position, View view, ViewGroup parent) {...}
I attach a clickListener to view like this:
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
final LinearLayout llMatchInfo = v.findViewById(R.id.matchInfo);
if (llMatchInfo == null) return;
llMatchInfo.setVisibility(llMatchInfo.getVisibility() == View.GONE ? View.VISIBLE : View.GONE);
}
});
Then I have this one user complaining that when he clicks an element llMatchInfo is visible for a split second and then disappears again.
This is the only place the matchInfo view has it's visibility changed.
Can anyone help me figure out why this is happening?
Thanks in advance
Here's the outer XML for each item in my ListView:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingEnd="5dp">
<LinearLayout
android:orientation="horizontal"
android:layout_width="10dp"
android:layout_height="fill_parent"
android:id="#+id/live_indicator">
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:id="#+id/match_data"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
...
</LinearLayout>
<include
android:layout_width="fill_parent"
android:layout_height="wrap_content"
layout="#layout/match_info"
android:id="#+id/matchInfo" />
</LinearLayout>
</LinearLayout>
And the inner XML for the actual matchInfo (the part I want to toggle visibility on):
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:visibility="gone">
<LinearLayout
android:id="#+id/team_logos"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="horizontal">
<ImageView
... />
<ImageView
... />
</LinearLayout>
<TextView
... />
<TextView
... />
<TextView
... />
<LinearLayout
android:id="#+id/tv_channels"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="horizontal"
android:visibility="visible">
<ImageView
... />
<ImageView
... />
</LinearLayout>
</LinearLayout>

I want current layout to be changed so that I can scroll entire layout.

<LinearLayout
android:id="#+id/layout_question_detail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="gone">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="55dp"
>
<Button
android:id="#+id/btn_question_backButton"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/backicon_round"/>
<TextView
android:id="#+id/text_question_detail_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:textColor="#color/color_green"
android:text="Error"
android:textSize="19dp"
/>
</RelativeLayout>
<ImageView
android:id="#+id/image_question_detail_image"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:scaleType="centerCrop"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:layout_weight="2">
<TextView
android:id="#+id/text_question_detail_userComments"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:layout_marginBottom="25dp"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="3">
<ListView
android:id="#+id/list_question_detail_expComments"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="#android:color/transparent"
android:dividerHeight="10dp"></ListView>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
Now, I set layout for title on the top. Then, a Imageview, a textview and a listview follow below this layout, and only 1 textview is inside listview.
listview can vary in size.
The problem is, if the size of the listview is very big, I can only scroll the screen assigned to listview.
But, I want scroll the entire screen.
To solve this problem, I added scrollview outside of the first linearlayout.
However, It didn't work.(the imageview disappeared)
What can I do?

you can make your listview addheaderview,and put your imageview and textview into headerview
yourlayout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/layout_question_detail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="55dp">
<Button
android:id="#+id/btn_question_backButton"
android:layout_width="50dp"
android:layout_height="50dp" />
<TextView
android:id="#+id/text_question_detail_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="Error"
android:textColor="#000000"
android:textSize="19dp"
/>
</RelativeLayout>
<ListView
android:id="#+id/list_question_detail_expComments"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="#android:color/transparent"
android:dividerHeight="10dp"></ListView>
lv_header.xml
<?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="wrap_content"
android:orientation="vertical"
>
<ImageView
android:id="#+id/image_question_detail_image"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:scaleType="centerCrop" />
<TextView
android:id="#+id/text_question_detail_userComments"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="25dp"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:textSize="20dp" />
Activity.class
public class MainActivity extends AppCompatActivity {
private ListView list_question_detail_expComments;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list_question_detail_expComments = (ListView) findViewById(R.id.list_question_detail_expComments);
View lvHeaderView = View.inflate(this,R.layout.lv_header,null);
list_question_detail_expComments.addHeaderView(lvHeaderView);
list_question_detail_expComments.setAdapter(new LvAdapter());
}
private class LvAdapter extends BaseAdapter{
#Override
public int getCount() {
return 20;
}
#Override
public Object getItem(int i) {
return null;
}
#Override
public long getItemId(int i) {
return 0;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
TextView tv = new TextView(MainActivity.this);
tv.setText("test"+i);
return tv;
}
}
}

How to initialize OnClickListener for included layout inside fragment?

This is representation of my app layout:
Where should I create onClickListeners for included layouts? I tried inside the fragment but I could not get through with findViewById. So I tried from Main Activity but I'm not sure how to get to included layouts from there.
I also tried this inside the fragment:
public class MainMenu extends Fragment implements View.OnClickListener{
View button_call;
#Override
public View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedinstanceState) {
View myView = inflater.inflate(R.layout.fragment_main_menu, container, false);
button_call = myView.findViewById(R.id.btn_call);
button_call.setOnClickListener(this);
return myView;
}
#Override
public void onClick(View v) {
// implements your things
}
public MainMenu() {
}
}
But then Fragment seems to be empty
Fragment XML:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="#+id/mainmenu_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingRight="60dp">
<include android:id="#+id/btn_call"
layout="#layout/call_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="30dp"
android:paddingBottom="30dp"
android:layout_marginTop="20dp"
android:layout_marginBottom="5dp"/>
<include android:id="#+id/button2"
layout="#layout/message_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="30dp"
android:paddingBottom="30dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp" />
<include android:id="#+id/button3"
layout="#layout/navigate_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="30dp"
android:paddingBottom="30dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"/>
<include android:id="#+id/button4"
layout="#layout/remind_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="30dp"
android:paddingBottom="30dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"/>
</LinearLayout>
</ScrollView>

Steps
Create a xml file you want to inclue (eg. web.xml)
use include tag in fragment's xml and connect your layout you need to include using layout="#layout/
Initialize include tag inside fragment (when you do this make sure about the root tag of your web.xml)
Once initializing include tag is done access views inside the layout that included (web.xml) using include tag
Example
Here in my fragment I have an include tag in it's XML. It connects to my web.xml and ..web.xml's parent tag/ root tag is a FrameLayout ..
Now see how I initialize my include tag..(If you do not use the right root tag to initialize include,it will crash with a null pointer)
I have an id called g_betta in my web.xml( XML layout that I included in my fragment)
see how I access that view..
public class FragmentAbout extends Fragment {
private RelativeLayout relativeLayoutConnectedInsideIncludeTag;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.my_fragment,container,false);
FrameLayout view =(FrameLayout) rootView.findViewById(R.id.include_tag);
relativeLayoutConnectedInsideIncludeTag = (RelativeLayout) view.findViewById(R.id.g_betta);
relativeLayoutConnectedInsideIncludeTag.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getActivity(), "Yes I Found you", Toast.LENGTH_SHORT).show();
}
});
return rootView;
}
}
my fragment xml
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/mainmenu_layout"
android:layout_width="match_parent"
android:layout_height="100dp"
android:orientation="vertical">
<include
android:id="#+id/include_tag"
layout="#layout/web"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</ScrollView>
my include--> web.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/maroon"
android:gravity="center_horizontal">
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/g_betta"
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:orientation="vertical">
<TextView
android:id="#+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="HELLO"
android:textColor="#FFF"
android:textSize="20dp" />
<RelativeLayout
android:id="#+id/lin"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_marginBottom="16dp"
android:background="#color/colorPrimaryDark"
android:gravity="bottom"
android:paddingLeft="24dp"
android:paddingRight="24dp" />
</RelativeLayout>
<ImageView
android:id="#+id/imageone"
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_below="#+id/lin"
android:layout_margin="16dp"
android:background="#drawable/girl"
android:scaleType="fitXY" />
<ImageView
android:id="#+id/imagetwo"
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_below="#+id/imageone"
android:layout_margin="16dp"
android:background="#drawable/amanda"
android:scaleType="fitXY" />
</RelativeLayout>
</ScrollView>
</FrameLayout>

Do like this:
button_call = myView.findViewById(R.id.btn_call);
button_call.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// write your code here...
});

setVisibility(View.Gone) work but the view still own the space

I make a CustomAdapter extends BaseAdapter.In it's getView() method , I use ViewHolder. And I set a clickListener with a TextView to set a view (call it A)gone and another view (call it B)visible , but when I click the TextView , the A GONE but it leave a space ,so the B cannot match the parent.
My code like
#Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder viewHolder;
if (convertView == null){
convertView = mLayoutInflater.inflate(R.layout.customlayout,parent,false);
viewHolder = new ViewHolder();
}else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.textView = (TextView) convertView.findViewById(R.id.textview);
viewHoler.a = (LinearLayout) convertView.findViewById(R.id.a);
viewHoler.b = (LinearLayout) convertView.findViewById(R.id.b);
viewHolder.textview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (viewHolder.a.getVisibility() == View.GONE){
viewHolder.b.setVisibility(View.GONE);
viewHolder.a.setVisibility(View.VISIBLE);
notifyDataSetChanged();
}else {
viewHolder.a.setVisibility(View.GONE);
viewHolder.b.setVisibility(View.VISIBLE);
notifyDataSetChanged();
}
}
});
convertView.setTag(viewHolder);
return convertView;
}
the customlayout code is
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="150dp">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/bg"/>
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"/>
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="#+id/a"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="gone">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="button a"/>
</LinearLayout>
<LinearLayout
android:id="#+id/b"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="visible">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="button b"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
It should be show like this way when I click the textView
but it always like another way below , just like the A view still take the space ,that like call setVisibility(View.INVISIBLE) or not setVisibility(View.GONE)
the A view is not appear because that although B view has disappeared but it still take the space
Why will it behave like that? How should I do to solve it ?
Thank you for your help.

Try with wrap_content on your LinearLayouts.
Like this -
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="150dp">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/bg"/>
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"/>
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:id="#+id/a"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:visibility="gone">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="button a"/>
</LinearLayout>
<LinearLayout
android:id="#+id/b"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:visibility="visible">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="button b"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>

Android in Navigation Drawer when I click anywhere drawer closes

in navigation drawer, when i push a button or anything else, drawer gets closed. What is the problem?
I search on internet but I didn't find anything that is different than my codes. Maybe there are some mistakes but I have not found them.
codes:
index.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#bbb9b9b9">
<ListView
android:id="#+id/listViewDrawer"
android:layout_width="240dp"
android:layout_gravity="start"
android:layout_height="match_parent"
android:background="#fff"
android:padding="3dp"
android:choiceMode="singleChoice"
android:dividerHeight="1dp"
android:divider="#android:color/transparent">
</ListView>
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="10">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:weightSum="10">
<ImageButton
android:layout_width="0dp"
android:layout_height="fill_parent"
android:id="#+id/btnMalt"
android:layout_weight="1.5"
android:src="#drawable/mal" />
<EditText
android:layout_width="0dp"
android:layout_height="fill_parent"
android:id="#+id/legerin_ett"
android:layout_weight="5.5"
android:hint="#string/legerin_text" />
<ImageButton
android:layout_width="0dp"
android:layout_height="fill_parent"
android:id="#+id/btnLegerint"
android:layout_weight="1.5"
android:src="#drawable/legerin" />
<ImageButton
android:layout_width="0dp"
android:layout_height="fill_parent"
android:id="#+id/btnDerkevet"
android:layout_weight="1.5"
android:src="#drawable/derkeve" />
</LinearLayout>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/sernavt"
android:gravity="center"
android:text="sepana tirşikê ji bo telefonên jîr"
android:textStyle="bold"
android:textColor="#ff000000"
android:textSize="20dp"
android:layout_marginTop="3dp"
android:layout_marginBottom="3dp" />
<ListView
android:layout_width="match_parent"
android:layout_height="0dp"
android:id="#+id/listViewt"
android:layout_gravity="center_horizontal"
android:layout_weight="9"
android:layout_marginBottom="5dp" />
<Button
android:layout_width="fill_parent"
android:layout_height="0dp"
android:text="#string/peyameke_binivise"
android:id="#+id/buttonPeyamBinivise"
android:layout_gravity="center_horizontal"
android:layout_weight="1" />
</LinearLayout >
</android.support.v4.widget.DrawerLayout>
in main.java related codes:
NuceMijarAdapter adapter1 = new NuceMijarAdapter(Index.this,R.layout.list_mijar_layout,arr);
lvDrawer.setAdapter(adapter1);
private class NuceMijarAdapter extends ArrayAdapter<String> {
private ArrayList<String> items;
public NuceMijarAdapter(Context context, int textViewResourceId, ArrayList<String> items) {
super(context, textViewResourceId, items);
this.items = items;
}
#TargetApi(Build.VERSION_CODES.HONEYCOMB)
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.list_mijar_layout, null);
}
final String o = items.get(position);
if (o != null) {
String htmlText = o.replace("<a href=\"index.php?","<a href=\"http://www.tirsik.net/index.php?")
.replace("padding-left:8px","padding-left:1px")
.replace(" » ","");
final NuceMijarIro nuce = mijarIroAction(htmlText);
Button tvMijar = (Button) v.findViewById(R.id.tvMijar);
Button tvHejmar = (Button) v.findViewById(R.id.tvHejmar);
tvMijar.setText(nuce.mijar);
tvHejmar.setText(nuce.hejmar);
tvMijar.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.d("url: ", nuce.link);
if(nuce.link.contains("index.php?mijar")) {
urlIndex = nuce.link;
if(teketin) mijarRasthatiTeketi("bnr");
else mijarRasthati("bnr");
}
}
});
}
return v;
}
}

I had the same problem once.
I had a RecyclerView NavigationDrawer and by just moving the Navigation code to the bottom of the xml file my problem got solved.
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/DrawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="7dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
//some code here for the body of your activity
</RelativeLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/RecyclerView"
android:layout_width="350dp"
android:layout_height="match_parent"
android:layout_gravity="right"
android:background="#ffffff"
android:scrollbars="vertical">
</android.support.v7.widget.RecyclerView>
hope it works for you too...

For more explanation,
<ListView
android:id="#+id/listViewDrawer"
android:layout_width="240dp"
android:layout_gravity="start"
android:layout_height="match_parent"
android:background="#fff"
android:padding="3dp"
android:choiceMode="singleChoice"
android:dividerHeight="1dp"
android:divider="#android:color/transparent">
</ListView>
Is going to be your Content and other contents gonna be your NavigationDrawer actually.
Please see how it works:
http://developer.android.com/training/implementing-navigation/nav-drawer.html
Which said:
the following layout uses a DrawerLayout with two child views: a
FrameLayout to contain the main content (populated by a Fragment at
runtime), and a ListView for the navigation drawer.
And use NavigationDrawer which that comes from with new SupportLibrary.