Myself designing an app which uses GPS and Maps. I have created the UI as tabs. But i couldn't able to keep the font below the image.
Code in my Mainactivity
TabSpec gpsspec = tabHost.newTabSpec("GPS");
gpsspec.setIndicator("GPS", getResources().getDrawable(R.drawable.gps));
Intent gpsIntent = new Intent(this, GpsActivity.class);
gpsspec.setContent(gpsIntent);
tabHost.addTab(gpsspec);
XML file in my drawable folder for tabs
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- When selected, use grey -->
<item android:drawable="#drawable/gps_icon"
android:state_selected="true" />
<!-- When not selected, use white-->
<item android:drawable="#drawable/gps_icon" />
</selector>
Main.xml
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
</TabHost>
Kindly help in aligning the font.
You need to provide
Small size of icons for small density devices in drawable-ldpi folder
Medium size of icons for medium density devices in drawable-mdpi folder
Large size icons for large density devices in drawable-hdpi folder
Here is documentation guide for sizes of the drawable and layouts.
if it doesn't solve your problem, you can consider provding your own customized tab indicator, which I've used in my post here.
Related
I wish to create the same activity like in google fit
And I created an activity with android:theme="#style/Theme.AppCompat.Light.NoActionBar">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ddd"
android:orientation="vertical"
tools:context=".MainActivity">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginEnd="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="12dp"
android:background="#null"
android:onClick="onPreferencesClick"
android:src="#drawable/ic_more_vert_grey600_24dp" />
But when I click on three dots button it doesn't have any push effect in ui, but onPreferencesClick works fine.
How to create pushable ImageButton?
The easiest way would be to create a custom selector, for example like this (drawable xml):
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="#33000000"/>
<item android:drawable="#android:color/transparent"/>
</selector>
and apply it to the background of ImageButton
I have simple list view with list items defined by following layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/list_item_selector" >
<TextView
android:id="#+id/menuItemTextView"
android:clickable="false"
android:focusable="false"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="#00000000"
android:padding="20dp"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/blue"
android:textIsSelectable="true" />
<ImageView
android:id="#+id/arrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:paddingRight="10dp"
android:src="#drawable/arrow" />
> </RelativeLayout>
When I click TextView the listView.onItemClickListener is not called. The problem occurs on Android 4. Android 2.x is OK. Is there any trick to pass an event from TextView to its ListView without defining onClickListner on the TextView?
In your main activity just make you listview as focusable true. This worked for me. If you are using a custom list view the focus is passed to its childs and not the list so to get the focus back to listview use
listView.focusable(true);
and the other things as textview just set their focus as false.
It was the android:textIsSelectable="true" attribute. Don't follow lint hints blindly.
android:inputType="textMultiLine" can also cause this problem. If you've included that attribute in your TextView xml, try removing it.
I have come across this problem. I have a tab widget on top of the view, with four tabs in it. I have been asked to change the background color of the whole tab view area. Not for any tab, but the whole area of that tab view.
I also been asked for not changing any source code for some branding reason. So I could only do it through xml file. I searched around but seems all solution is by using java code. So I wonder if there is a way that I could change the widget background color (just color, not images) by using only resources files?
Here is my layout file for the tab layout:
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp"
>
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#color/tabbackgroundcolor" />
<FrameLayout
android:layout_below="#android:id/tabs"
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp"
/>
</RelativeLayout>
</TabHost>
You could see that I added "android:background="#color/tabbackgroundcolor"" in the TabWidget part, however it not work..
Thank you!
I try to get MapView from Resource Layout but it returns null:
var map_view = FindViewById<MapView>(Resource.Id.emap);
mylayout.xml like :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/etklmap"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:id="#+id/zoomOutButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Zoom Out" />
<com.google.android.maps.MapView
android:id="#+id/emap"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:apiKey="apikey" />
</LinearLayout>
So is there any way to get view without calling SetContentView(Resource.Layout.mylayout);
The resource file is just XML - it doesn't become a collection of viewgroups and widgets until it's "inflated"
One way to inflate XML is to use SetContentView.
Another way is to use the inflaterservice - see this monodroid question (and answers) for an example: Android: Getting the View added with LayoutInflator
Note that - under the covers - all setcontentview does is to inflate the XML using exactly the same inflaterservice, passing in the activity as the parent frame for the inflation.
The official android docs on this are http://developer.android.com/reference/android/view/LayoutInflater.html
I have a ListView where I'm changing the background color of the selected item using the onListItemClick event:
#Override
public void onListItemClick(final ListView l, final View v, final int position, final long id)
{
v.setBackgroundColor(Color.GRAY);
}
Is it possible to reset all of the rows of the ListView back to the original color before changing the single view's background color? The problem is that each selected item retains their background color and I only want the latest item the user clicked on changed.
UPDATE:
JRaymond's response seems to be the best approach, however, and it's usual when working with Android layouts, I've put the code in and nothing happens. No way to debug it, no error messages, nothing. I absolutely hate dealing with Android layouts, it's the most convoluted, terribly implemented design for dealing with UI.
Anyhow, this is what I have so far:
ListView:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
>
<ListView android:id="#android:id/list"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:choiceMode="singleChoice"
android:listSelector="#drawable/listing_selector"
/>
<TextView android:id="#android:id/empty"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:padding="5dp"
/>
</LinearLayout>
listing_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_focused="true" android:drawable="#android:color/transparent" />
<item android:state_pressed="true" android:drawable="#android:color/transparent" />
<item android:state_selected="true" android:state_activated="true" android:drawable="#android:color/black" />
<item android:state_activated="true" android:drawable="#android:color/transparent" />
<item android:state_selected="true" android:drawable="#android:color/transparent" />
<item android:drawable="#android:color/transparent" />
</selector>
Like I said, nothing happens when I click on items, even the built-in highlighting is gone. I even tried changing all of the color to black, but nothing happens.
UPDATE2:
I'm getting closer. After reading this article, you have to place your selector xml in a folder called color under res, then you set the selector as the background in the layout for each item in the ListView, not on the ListView itself:
<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:background="#color/listing_selector"
>
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</RelativeLayout>
I'm seeing the background color change flash when I touch each item in the ListView however, they are not staying and reverting back to the original background color. This is the selector I'm using:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="false" android:state_pressed="false" android:drawable="#android:color/transparent" />
<item android:state_pressed="true" android:drawable="#color/blue" />
<item android:state_selected="true" android:state_pressed="false" android:drawable="#color/blue" />
</selector>
color.xml:
<?xml version="1.0" encoding="UTF-8"?>
<resources>
<color name="blue">#ff33b5e5</color>
</resources>
What an absolute pain in the ass this is. Whoever came up with this terrible system for dealing with the UI should be fired.
Solution:
Not 100% sure, but this may only work in Android 3.0+ devices. state_activated is what sets the background color.
What you're looking for is a combination of a stateListDrawable (also known as a selector) and choiceMode.
Include in your drawables folder an xml like this one (I'm using other drawables as my backgrounds, but color works just as well):
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_focused="true"
android:drawable="#drawable/list_item_pressed" />
<item android:state_pressed="true"
android:drawable="#drawable/list_item_pressed" />
<item android:state_selected="true"
android:state_activated="true"
android:drawable="#drawable/list_item_selected" />
<item android:state_activated="true"
android:drawable="#drawable/list_item_selected" />
<item android:state_selected="true"
android:drawable="#android:color/black" />
<item android:drawable="#android:color/transparent" />
</selector>
and then set your listview's choiceMode to singleChoice
<ListView
...
android:choiceMode="singleChoice"
This lets the OS handle your backgrounds for you.
just a simple solution is in onitemclick just rememeber the clicked position of the item and call notifydatachanged() and in getView() of your custom adapter just before retrun statement a if loop comparing like below:::
if(postion == itemclickedposition)
converterView.setBackgroundColor(Color.GRAY);