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Get the color of a specific pixel Java Android example


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             ImputStream      is = this.getResources().openRawResource(R.drawable.colors);
             Bitmap    mBitmap2 = BitmapFactory.decodeStream(is);
        
         int  w = mBitmap2.getWidth();
         int  h = mBitmap2.getHeight();
//  int x , y have to be smaller as w , h 
         int _color =  mBitmap2.getPixel(x, y);


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349

Android Studio bug versioncode versionname signed apk issue | android-studio-bug-versioncode-versionname-signed-apk-issue


If you change android:versionCode="224" and android:versionName="2.2.4" in AndroidManifest.xml you have to change this in build.gradle file too.
Click on build.gradle in package explorer tree change your new version name and code:


  defaultConfig {
        applicationId "cz.okhelp.pocasiwidget"
        minSdkVersion 11
        targetSdkVersion 23
        versionCode 224
        versionName "2.2.4"
    }
242

Replace graphic accent diacritic Java Function | replace-graphic-accent-java-function


Replace diacritic marks: Á Č Ď É Ě Í Ň Ó Ř Š Ť Ú Ů Ý Ž
á č ď é ě í ň ó ř š ť ú ů ý ž


public String replaceDiacritic (String inputStr) {
	
	Map<String, String> replacements = new LinkedHashMap<String,String>() {{
		//Velká
		put("Á","A");
		put("Č","C");
		put("Ď","D");
		put("É","E");
		put("Ě","E");
		put("Í","I");
		put("Ň","N");
		put("Ó","O");
		put("Ř","R");
		put("Š","S");
		put("Ť","T");
		put("Ú","U");
		put("Ů","U");
		put("Ý","Y");
		put("Ž","Z");
		//Malá  "," ");
		put("á","a");
		put("č","c");
		put("ď","d");
		put("é","e");
		put("ě","e");
		put("í","i");
		put("ň","n");
		put("ó","o");
		put("ř","r");
		put("š","s");
		put("ť","t");
		put("ú","u");
		put("ů","u");
		put("ý","y");
		put("ž","z");
		}
	};
	for(Map.Entry<String, String> entry : replacements.entrySet()) {
          inputStr =  inputStr.replaceAll(entry.getKey(), entry.getValue());
         }	
	return inputStr;
}
	
211

The container JRE System Library JavaSE references non existing library | the-container-jre-system-library-javase-references-non-existing-library


Eclipse Error: The container JRE System Library JavaSE references non existing library QTJava.zip

Workaround:
Windows->Preferences->Java->Installed JRE
Press Add and select your JRE folder path for example:
c:\Program Files\Java\jre7\
and check your choice.

eclipse instaled jres path dialog
236

IndexOutOfBounds TextView Html Android 4.1 error | indexoutofbounds-textview-html-android-4-1-error


Try before html tags put space and check if every tag is closed b - /b.
For example:

My text (<i>some text</i>) blah blah...
Change to:
My text (   <i>some text</i>) blah blah...

"java.lang.IndexOutOfBoundsException
at android.graphics.Paint.getTextRunAdvances(Paint.java:1731)
at android.graphics.Paint.getTextRunAdvances(Paint.java:1704)
at android.text.MeasuredText.addStyleRun(MeasuredText.java:164)
at android.text.MeasuredText.addStyleRun(MeasuredText.java:204)
at android.text.StaticLayout.generate(StaticLayout.java:281)
at android.text.StaticLayout.(StaticLayout.java:140)
at android.text.StaticLayout.(StaticLayout.java:80)
at android.text.StaticLayout.(StaticLayout.java:59)
at android.widget.TextView.makeSingleLayout(TextView.java:5901)
at android.widget.TextView.makeNewLayout(TextView.java:5741)
at android.widget.TextView.onMeasure(TextView.java:6098)
at android.view.View.measure(View.java:15172)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
at android.view.View.measure(View.java:15172)
at android.widget.ListView.setupChild(ListView.java:1847)
at android.widget.ListView.makeAndAddView(ListView.java:1772)
at android.widget.ListView.fillDown(ListView.java:672)
at android.widget.ListView.fillSpecific(ListView.java:1330)
at android.widget.ListView.layoutChildren(ListView.java:1600)
at android.widget.AbsListView.onLayout(AbsListView.java:2102)
at android.view.View.layout(View.java:13754)
at android.view.ViewGroup.layout(ViewGroup.java:4362)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1420)
at android.view.View.layout(View.java:13754)
at android.view.ViewGroup.layout(ViewGroup.java:4362)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:13754)
at android.view.ViewGroup.layout(ViewGroup.java:4362)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1649)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1507)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1420)
at android.view.View.layout(View.java:13754)
at android.view.ViewGroup.layout(ViewGroup.java:4362)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:13754)
at android.view.ViewGroup.layout(ViewGroup.java:4362)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1866)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1687)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4212)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
at android.view.Choreographer.doCallbacks(Choreographer.java:555)
at android.view.Choreographer.doFrame(Choreographer.java:525)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
"
310

Windows set Environment Variables - Java path | windows-set-environment-variables-java-path


How set JAVA path to Environment Variables on Windows (7)
Select Start menu > Computer > System Properties > Advanced System Settings(properties).
Then open Advanced tab > Environment Variables and add a new system variable JAVA_HOME that points to your JDK folder, for example

 C:\Program Files\Java\jdk1.8.0_05


Editace: 2013-12-09 13:06:02
Počet článků v kategorii: 397
Url:get-the-color-of-a-specific-pixel-java-android-example

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