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Relative layout RelativeLayout Android example


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xml RelativeLayout Android example:

Eclipse graphical xml layout editor
[caption id="attachment_896" align="alignleft" width="261" caption="Relativelayout Eclipse graphical editor"]relativelayout-graphical-editor-eclipse[/caption]


res/layout/main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="//schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TextView
        android:id="@+id/idLabel"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Enter word"/>
    <EditText
        android:id="@+id/idEntry"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@android:drawable/editbox_background"
        android:layout_below="@id/idLabel"/>
    <Button
        android:id="@+id/idOk"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/idEntry"
        android:layout_alignParentRight="true"
        android:layout_marginLeft="10dip"
        android:text="OK" />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toLeftOf="@id/idOk"
        android:layout_alignTop="@id/idOk"
        android:text="Cancel" />
</RelativeLayout>

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Další témata ....(Topics)


327

Links too close together Mobile friendly page | links-too-close-together-mobile-friendly-page


Try set bigger line-height of links and font size for example:


/*in css*/
.links{
line-height: 48px;
font-size: 20px;
background-color: rgb(255,204,0);
}

/* in html page set class of link*/
<a class="links" href="m.mydomen.com/mypage.html">Blah blah mypage</a>

// or in css for all links on page
a {
line-height: 48px;
font-size: 20px;
}

/*html page*/
<a href="m.mydomen.com/mypage.html">Blah blah mypage</a>

92

How add Android code templates to Eclipse | how-add-android-code-templates-to-eclipse


If you have to type frequently the same code you can create templates which can be activate via autocomplete with Ctrl + Space.

For example lets assume setOnClickListener body.

To create a template for this select the menu Window->Preferences and Open Java -> Editor -> Templates

Create new Android template in Eclipse



Type name of template in Eclipse s editor and pres Ctrl+Space


[caption id="attachment_1114" align="alignleft" width="300" caption="Eclipse-show-template-proposals"]eclipse-show-template-proposals[/caption]


Select your template from intellisense help and press Enter or double click on selected item.


[caption id="attachment_1116" align="alignleft" width="300" caption="Eclipse - select your template"][/caption]



	mIdButtonHome.setOnClickListener(new View.OnClickListener() {
		public void onClick(View v) {
			Intent browserIntent = new Intent(Intent.ACTION_VIEW,
					Uri.parse("//android.okhelp.cz/category/software/"));
			startActivity(browserIntent);
		}
	});






Quick help in Eclipse editor: select keyword and press Ctrl+1

Eclipse quick help
13

Wordpress comments | wordpress-comments


Jak povolit komentáře je přihlášeným uživatelům.
Spam v komentářích je nepříjemný a zatěžuje server. Jednou z metod, jak jej omezit je povolit přidávat komentáře jen registrovaným členům. Toho ve Wordpress dosáhneme v administraci z menu Settings - Discussion kde zaškrtneme políčko Users must be registered and logged in to comment a nastaveni uložíme.
259

Shuffle Array of String Java Example | shuffle-array-of-string-java-example



       String[] sAr = new String[] {"one","two","three"};
       List<String> wordList = Arrays.asList(sAr);
       Collections.shuffle( wordList);
       String[]myShuffledArray = wordList.toArray(new String[wordList.size()]);


328

Screen size density independent pixel resolution | screen-size-density-independent-pixel-resolution


Terms Screen size, density, density independent pixel, resolution as a picture - pictogram.
mobile-phone-screen-resolution-terms

Test your knowledge
Q: How to find out the phone screen size?
A: (By length of display diagonale in inch -  Not to measure a diagonal of device!!!)

Q: What resolution has 720 x 1280 display?
A: (921600 pixels)

Q: What does it mean "240 dpi" screen density?
A: (Display have density 240 x 240  dots - "Tri-color LED etc." - per every physical (real) square inch. If you have icon 240x240 pixels, this will just occupy an area of one square inch on the display.)

Q: Phone have screen density 240 dpi. Image for 160 dpi screen density have size 128x 128 pixels. What will be the size of the image for 240 dpi screen density?
A: (Calculate the virtual pixels size.   128 * (240/160)  =  192.  You have to resize image to new size 192 x 192 physical pixels and put into folder drawable-hdpi (high) ~240dpi  for phone with screen density 240 dpi. ) or use density independend pixels 128dp x 128dp.

 

 


Editace: 2011-09-28 08:15:02
Počet článků v kategorii: 397
Url:relative-layout-relativelayout-android-example

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