different android launchers

Android screen resolution adaptation of the icon processing more trouble, let the UI do different size of the picture is also a waste of time, and error prone, so use Python to write a tool to automate the processing of pictures, the UI only need to do a good 1080*1920 resolution of the picture can be, Images of other resolutions are automatically generated.Import os.pathimport sysfrom PIL import Image "" "

1 button to set the Android:background property by pressing the different effects down,2 The following button_select is actually Button_select.xml -3 4 Button5 Android:id= "@+id/btn_contentprovider"6 Android:layout_width= "Wrap_content"7 Android:layout_height= "Wrap_content"8 Android:background= "@drawable/button_select"9 Android:text= "Contact without diagram" >Ten Button>Button_select.xml:1 XML version= "1.0" encoding= "Utf-8"?>2 sel

Currently, there are too many android models on the market. It is very realistic and necessary to solve the problem of how to adapt your applications to different models. The solution documentation officially provided by android is analyzed and processed in three directions.(1) Support devices of Different Screen Sizes

Sometimes, to display different images in the same ImageView, we often use:View plaincopy to clipboardprint?If (condition 1 ){Image. setBackground (R. id. xxx1 );} Else if (condition 2 ){Image. setBackground (R. id. xxx2 );}If (condition 1 ){Image. setBackground (R. id. xxx1 );} Else if (condition 2 ){Image. setBackground (R. id. xxx2 );} You can use another simple method to implement the same function. First, create an xml file under res/drawable wit

We all know that the rational use of system resources to reduce the number of systems that are not occupying too much is a question that every developer must think about. As we all know, an application is composed of a series of Activities with specific functions, they have their own attributes and behaviors. You can introduce the current process to a specific Activites by starting a shortcut in the Home, or start external Activities in other program processes. Some may ask, do you know how to s

better use two sets of resource images as much as possible; Question 2: When visual design is based on the interaction prototype, you can consider the mdpi, that is, the 320x133 blueprint for design, because Android generally uses DP as the unit, in our design, PX is usually the unit, which involves a unit conversion problem. In mdpi, the relationship between PX and DP is, in this way, the unit conversion can be easily performed when the coordinate

Diffbundle = new bundle ();//if (!newitem.header.equals (Olditem.header)) {//Diffbundle.putstring (Key_heeder, newitem.header);// }//if (!newitem.footer.equals (Olditem.footer)) {//Diffbundle.putstring (Key_footer, newitem.footer);// }//if (diffbundle.size () = = 0) return NULL;//return diffbundle;}This we write a bean, inside we put the header and footer, and then make a comparison, this way I will not write the demo. Believe in this writing you should be able to read.

events);"False" indicates an unavailable state to use. android:window_focusedBoolean. "True" indicates that the application window has the focus when used (applicationin the foreground); "false" means use when there is no focus (for example, the notification bar pullsOr the dialog box appears).Note: Remember that the first item in StateList that matches the current state will be used. Therefore, if the first item is notIf there is any state attribute, then it will be used every time, which is w

Use the following code in Android to sharedpreferences data sharing between two applications, but only if you want to ensure that the android:shareduserid of the two applications is the sameContext context = NULL; try {context=createpackagecontext ("com.android.providers.downloads", context.context_ignore_security);} catch ( Namenotfoundexception e) {//TODO auto-generated catch Blocke.printstacktrace ();} Sharedpreferences mprefs = context.getsharedpr

As the Android version continues to update, the new API is constantly gushing, and sometimes the high-version API is crash in the lower version.If the minsdkversion setting is too low, the error will be in the build (call requires API level 9);In order to compile can pass, can add @SuppressLint("NewApi") or@TargeApi(9)注解。This is only compiled through, the runtime will still be crash.The right approachIn order to run without error, you need: Dete