Draw Rect Android basic example
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drawRect(), Paint, setStroke(), setStyle(), Canvas example source code.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new SampleView(this));
}
private static class SampleView extends View {
// CONSTRUCTOR
public SampleView(Context context) {
super(context);
setFocusable(true);
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawColor(Color.CYAN);
Paint p = new Paint();
// smooths
p.setAntiAlias(true);
p.setColor(Color.RED);
p.setStyle(Paint.Style.STROKE);
p.setStrokeWidth(4.5f);
// opacity
//p.setAlpha(0x80); //
//drawRect (float left, float top, float right, float bottom, Paint paint)
canvas.drawRect(10, 10, 30, 30, p);
}
}
}
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Další témata ....(Topics)
If the app have transparent menu and you do not want this,
try delete @style/AppTheme in application tag in AndroidManifest.xml
and try run module - project. If menu is not transparent , maybe it caused
Or try set values\styles.xml into basic Theme
try delete @style/AppTheme in application tag in AndroidManifest.xml
and try run module - project. If menu is not transparent , maybe it caused
<application
android:allowBackup="true"
android:icon="@drawable/dicts_ico"
android:label="@string/app_name"
android:theme="@style/AppTheme" // delete this row - run app - try menu
>
Or try set values\styles.xml into basic Theme
<resources>
<!--
Base application theme, dependent on API level. This theme is replaced
by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
-->
<style name="AppBaseTheme" parent="android:Theme.Black">
<!--
Theme customizations available in newer API levels can go in
res/values-vXX/styles.xml, while customizations related to
backward-compatibility can go here.
-->
</style>
<!-- Application theme. -->
<style name="AppTheme" parent="AppBaseTheme">
<!-- All customizations that are NOT specific to a particular API-level can go here. -->
</style>
</resources>
If using Wordpress:
- update Wordpress
- download Plugin Any Mobile Theme Switcher and upzip into yourweb/wp-content/plugins/
- open Wordpress Dachboard on yourweb
- set defalut theme for desktop (Appearance - Theme)
- set themes for mobile users Settings - Any Mobile Theme Switcher for example Twentyfourteen theme
- preview page
- test page on Mobile Friendly Test
- update Wordpress
- download Plugin Any Mobile Theme Switcher and upzip into yourweb/wp-content/plugins/
- open Wordpress Dachboard on yourweb
- set defalut theme for desktop (Appearance - Theme)
- set themes for mobile users Settings - Any Mobile Theme Switcher for example Twentyfourteen theme
- preview page
- test page on Mobile Friendly Test
If you want download some *.apk file from internet and try on your emulator you get error than you have to install SD card. You have to closing Android emulator.
Mount Android emulator SD card instruction
Image how install SD card on Android emulator in Eclipse.
Mount Android emulator SD card instruction
- In Eclipse go in menu Window - Android SDK and Avg Manager
- Select Virtual devices
- Select AVD Name where you need install SD card
- Click on Edit button
- In open dialog go to SD card - Size: and write 500
- Press button Edit AVD
- Run AVD emulator
Image how install SD card on Android emulator in Eclipse.

LayoutLib is too recent. Update your tool!
Eclipse Android Graphical layout resolving problem.
Eclipse Android Graphical layout resolving problem.
- Open in Eclipse menu Help ->Check for Updates
- Select updates: [caption id="attachment_593" width="300" caption="Android Eclipse updates dialog"]
[/caption]
- Press Next and update all
- Restart Eclipse
[caption id="attachment_596" align="alignleft" width="300" caption="Restart Eclipse if updates finished."]

String sFileContent = readFile("myfile.txt",StandardCharsets.UTF_8);
static String readFile(String path, Charset encoding)
throws IOException
{
byte[] encoded = Files.readAllBytes(Paths.get(path));
return encoding.decode(ByteBuffer.wrap(encoded)).toString();
}
// write file
String sOut = "text blah hello world etc.";
writeToFile(sOut"someName.txt");
static void writeToFile(String sB,String name) {
String folder = ("c:\\folder\\");
File f = new File(folder+ name);
BufferedWriter writer = null;
writer = new BufferedWriter( new OutputStreamWriter(
new FileOutputStream( folder+name),"UTF-8"));
writer.write( sB);
if ( writer != null)
writer.close( );
}
Editace: 2013-12-09 13:11:19
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Url:draw-rect-android-basic-example
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