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Restoring complex objects at restart of an activity
Read more: Restoring complex objects at restart of an activityIn an android app an activity is created and then destroyed, for example when the user open another activity or when the user presses the back button, later the user opens again the same activity that is is recreated using the data saved before the earlier destruction of the activity. The data are saved in…
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Stopping the threads
Read more: Stopping the threadsStarting a thread is very easy in java, after you create it you need to call the method start(), for example: Thread myThread = new Thread(new MyRunnable()); myThread.start(); where MyRunnable is a class implementing the Runnable interface overidden the method run().
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List of the sensors in a device
Read more: List of the sensors in a deviceIn December 2012 I wrote a post about an app that displays the sensor list in an android device, now after about a year and a half the API 19 have new sensor types and methods and I thought to update the app.
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Implementing the double tap on an ImageView
Read more: Implementing the double tap on an ImageViewIn this post I explain a simple example of an implementation of a double tap event on an ImageView that can be adapted with some changes for a TextView or an Activity.
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Padding and margin in DialogPreference
Read more: Padding and margin in DialogPreferenceI implemented a Time Picker in the preference using the code found here where the class TimePreference extends the class DialogPreference but I found a lack of alignment with the other preference items because of a different setting of the margins and/or padding.
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Copying an array in java
Read more: Copying an array in javaIn this post I show some ways to copy arrays of primitive data and objects to another array.
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Handling the multi-touch in a surface view
Read more: Handling the multi-touch in a surface viewIn the previous post Handling the multi-touch in a view I’ve used a class that extends a View to show the circles where the screen is touched, here I display the same example but using a SurfaceView.
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Handling the multi-touch in a view
Read more: Handling the multi-touch in a viewIn this post you find a full example about how to extend a view to draw, in this case, a circle where you touch the screen implement a listener on a view to handle the multi-touch
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How to change the look and feel of a view using css
Read more: How to change the look and feel of a view using cssA lotus view open in a browser is very ugly but you can greatly improve using stylesheets (css); here I explain how to use the css in a lotus view in order to improve the look and feel and to display rows in alternate colors.
