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Android - Writing a custom (compound) component
The Android app I'm currently developing has a main activity that has grown quite large. This is mainly because it contains a TabWidget with 3 tabs. Each tab has quite a few components. The activity has to control of all those components at once. So I think you can imagine that this Activity has l...
Determining the size of an Android view at runtime
I am trying to apply an animation to a view in my Android app after my activity is created. To do this, I need to determine the current size of the view, and then set up an animation to scale from the current size to the new size. This part must be done at runtime, since the view scales to differe...
How ListView's recycling mechanism works
...h understand the mechanisms of the list view by referring to an image from android.amberfog
Whenever your listview is filled by an adapter it basically shows the number of Rows that the listview can show on screen and the number of rows doesn't increase even when you scroll through the list. This i...
Remove background drawable programmatically in Android
...se that doesn't work: check if you've used the background property and not android:src!
– Chris Conway
Oct 16 '12 at 23:00
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Android OpenGL ES and 2D
..., I want to learn OpenGL ES directly since I'm targeting my development to android, however. I want to learn OpenGL ES in order to develop my 2D games. I chose it for performances purpose (since basic SurfaceView drawing isn't that efficient when it comes to RT games).
My question is: where to sta...
android TextView: setting the background color dynamically doesn't work
Setting the background color programatically of an android TextView doesn't seem to work.
I'm I missing something!
14 Ans...
How to make a background 20% transparent on Android
...alpha channel. For example, for red use #CCFF0000:
<TextView
...
android:background="#CCFF0000" />
In the example, CC is the hexadecimal number for 255 * 0.8 = 204. Note that the first two hexadecimal digits are for the alpha channel. The format is #AARRGGBB, where AA is the alpha cha...
How to detect when an Android app goes to the background and come back to the foreground
...olution with onWindowFocusChanged and onStop.
For more details check here Android: Solution to detect when an Android app goes to the background and come back to the foreground without getRunningTasks or getRunningAppProcesses.
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Android RoundRectShape圆角矩形使用详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
Android RoundRectShape圆角矩形使用详解圆角矩形 常用作一些组件的背景构造函数：RoundRectShape(float[] outerRadii, RectF inset, float[] innerRadii)Specifies an out...圆角矩形 常用作一些组件的背景
构造函数：
RoundRectShape(float[] outerRadii, RectF inset, ...
How to delete shared preferences data from App in Android
...> (choose your app)
-> Clear data or Uninstall
Newer versions of Android:
Settings -> Applications -> (choose your app) -> Storage -> Clear data
and Clear cache
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