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Customizing the labels of an ActionBar
Read more: Customizing the labels of an ActionBarIn the post Tab Layout in Android with ActionBar and Fragment I wrote an example of using an ActionBar whose labels are shown in uppercase even if you use the statement: actionBar.newTab (). setText (“my string”); where “my string” is lowercase. In this article I show how to customize the labels in lowercase but it…
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Preventing the rotation of the screen in Android
Read more: Preventing the rotation of the screen in AndroidTo prevent rotation of the screen in Android you can use one of two statements:Android: screenOrientation = “portrait”orAndroid: screenOrientation = “landscape”being included in the activity tag in the file AndroidManifest.xml.
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Keeping the Android screen on
Read more: Keeping the Android screen onSometimes you prefer to keep the Android screen on also in case of prolonged inactivity, this limit is usually set at 30 seconds, beyond which the screen turns off to increase the battery life. This can be true for applications like watching movies, navigators, or even during the development phase of an application. To keep…
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How to access to the members of outer class from inner class
Read more: How to access to the members of outer class from inner classYou can’t access to the members of an outer class from an inner class using the keyword “this”. In fact, the keyword “this” in an inner class is a reference to the inner class itself. To have a reference to the outer class, you must use the syntax: [OuterClassName].this where [OuterClassName] is the name of…
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The android.os.NetworkOnMainThreadException exception
Read more: The android.os.NetworkOnMainThreadException exceptionIn this article I explain a possible cause of android.os.NetworkOnMainThreadException and how to avoid it. From the Android site you can read: NetworkOnMainThreadException The exception that is thrown when an application attempts to perform a networking operation on its main thread. This is only thrown for applications targeting the Honeycomb SDK or higher…
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How to add a file .jar to an Android project in Eclipse
Read more: How to add a file .jar to an Android project in EclipseAdding a file .jar from the menu of Eclipse, File -> Properties -> Java Build Path -> Libraries -> Add External JARs…, causes an error, the project compiles but at runtime you get the error “NoClassDefFoundError” as if the file .jar was missing in the project.
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Tab Layout in Android
Read more: Tab Layout in AndroidThis post is an example of implementing a tab layout in Android using a TabActivity class.The TabActivity class is deprecated since version 3.0 Honeycomb, then you should use ActionBar as I’ll write in a next post.
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The access modifiers of methods and variables of a java class
Read more: The access modifiers of methods and variables of a java classIn this article I explain how to set the visibility of methods and instance variables, ie those variables declared outside of any method (the variables declared within a method are called local variables and they are visible in the method only).
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The modifiers of a Java class
Read more: The modifiers of a Java classThe modifiers of a Java class are: public abstract final strictfp
