android:configchanges= "Orientation|keyboardhidden", before Android 3.2 (API level 13), the screen will recall the various lifecycles, The Onconfigurationchanged () method is not executed. You must add screensize to Configchanges after Android 3.2 to not recall the individual lifecycles when you cut the screen. and execute the onconfigurationchanged () method.The inconsistency between the test results and
Today met very speechless very pit demand, said to be installed in the application according to the parameters of the different dynamic generation of desktop icons, which is basically impossible in Android, there is a stackoverflow on the following sentence:You cannot change the application icon (or the Android manifest, or any other application resource for that
Many Android apps have a Back button in the top left cornerBy default, ADT will default to a return iconAnd as a lot of development needs are required to customize a new iconFound 2 ways to change on Android's website1.Setting in the Java Code environmentActionBar = Getactionbar (); Actionbar.setdisplayhomeasupenabled (true); Actionbar.sethomeasupindicator (R.drawable.back);If you have an erro
In android, how does one change the main menu icon to the installation time?1. Add the following code to LauncherModel. java. If it is KK Launcher3 ApplicationInfo, replace it with AppInfo.Public static final Comparator Return new Comparator Public final int compare (ApplicationInfo a, ApplicationInfo B ){Return a. firstInstallTime = B. firstInstallTime? 0: a. firstInstallTime> B. firstInstallTime? 1:-1;}};
onconfigchangedOnsaveinstancestateOnPauseOnStopOnDestroyOnCreateOnStartOnrestoreinstancestateOnresumeOnconfigurationchanged5 Change android:configchanges= "orientation" to android:configchanges= "Orientation|keyboardhidden", cut horizontal screen, Just print onconfigchangedOnconfigurationchanged6 cutting back to the vertical screenOnconfigurationchangedOnconfigurationchangedSummarize:1, do not set the activity of the android:configchanges, the screen
1. Import Checked.png and unchecked.png two photos first2. Under Res/drawable, add selector (such as check_state.xml) files:android:drawable= "@drawable/checked"/>android:drawable= "@drawable/unchecked"/>3. Modify the checkbox's properties: android:button= "@drawable/check_state" custom button styleIf the ******************************************************* is not displayed correctlyThe system gives the checkbox a default background, just set the background of the next checkbox===============
1. Right-click the project, choose android tools> rename application package, enter the name to be changed, and select the package to be changed. Some packages may not need to be renamed.
2. The source code package has not been modified in the previous step, but the package name involved in the project has been changed. Modify the source code package name below and right-click the source code package to cha
(index); Is the data that gets the specified subscript index to int type; int id = cursor.getint (cursor.getcolumnindex ("id")) ; String named = cursor.getstring (Cursor.getcolumnindex ("name")); String number = cursor.getstring (Cursor.getcolumnindex ("number"));//Instantiate query result data Object person = new person (ID, named, number);} Close the database connection, release the Resource Db.close ();//Return the data result object return person; /** * Update a data based on name * * @para
If the tried friends will find that in Onactivityresult () set these properties, as if they do not work, although I die or do not know the specific reason, I directly default it may not be set in the inside, so it can only be set in other places, fortunately found activity The Onresume () method is after the Onactivityresult () method call, so we can get the data in Onactivityresult () and set the property in Onresume (). Ok!Android in Onactivityresul
How to change the content on the android screen and combine two bitmaps to display the image
The requirements in the project are as follows:
This method is used to input a desired activity.
/*** @ Param activity * @ return */public Bitmap takeScreenShot (activity Activity) {View rootView = activity. getWindow (). getDecorView (); rootView. setDrawingCacheEnabled (true); rootView. buildDrawingCache (); Bitma
The project needs to add a grid line to the GridView, and the background of the GridView is a complete picture, as shown in the figure:
The common methods are:
1, change the background color of the GridView2. Set the interval of the GridView horizontal or vertical direction3 Set the item's layout file background colorThe above method directly changed the background color of the GridView, obviously does not meet the requirements of the project, I s
How to change the content on the android screen, and combine two bitmaps to display the image, androidbitmap
The requirements in the project are as follows:
This method is used to input a desired activity.
/*** @ Param activity * @ return */public Bitmap takeScreenShot (activity Activity) {View rootView = activity. getWindow (). getDecorView (); rootView. setDrawingCacheEnabled (true); rootView. buildDrawin
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