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Recently, when a project in the team develops an APP, A WebView interface is used for display instead of a native control.
One problem encountered during the development of this interface is that the fragmentation of Android causes many screen resolutions. Screens with different resolutions are compatible with the size of controls in the WebView of this interface.
Because the size of
So so:if (condition 1) { image.setbackground (r.id.xxx1); Else if (condition 2) { image.setbackground (r.id.xxx2); As a matter of fact. If you have more states, you should create a new XML under the Drawable folder:level-listxmlns:android= "Http://schemas.android.com/apk/res/android"> ItemAndroid:maxlevel= "4"android:drawable= "@drawable/stat_sys_battery_0" /> ItemAndroid:maxlevel= "+"android:drawable= "@drawable/stat_sys_batt
2014-07-16Environment: COCOS2DX 2.2.4AppDelegate.cpp in FPS set to 60Pdirector->setanimationinterval (1.0/60);Problem: Run on two Android devices. Two FPS is not the samei9100:4.0 system, fps approx. 60, (modified FPS is 30, will also change)s5700:2.3 system, fps approx. 80, (modified FPS is 30, still 80)This results in the game brush frame, the two machines run at a different speed.The workaround is as fol
Objective
About the use of recyclerview here is not to repeat, I believe that a lot of online search (I also have a simple introduction of the article), this time we are talking about the use of recyclerview in the process, sometimes according to different locations load different layout of the simple realization, This is just a point of action.
Effect chart
Design ideas• Rewrite the recyclerview.adapt
The length of Android is: DP (or dip device independent pixels) an abstract unit based on screen density. On a monitor that is 160 dots per inch. 1dp=1px.Different devices have different display effects. This is related to device hardware. Use unit DP;SP (scaled Pixels) when layout is used primarily for font display, a pixel independent of the scale, similar to DP. However, it is possible to scale based on
Tian haili @ csdn
Different Android platforms use different JDK versions during compilation. For example, froyo (2.2) and its earlier versions require JDK; gingerbread and later versions require JDK. If you want to build different platform projects in an environment, you need to install
resources directory because it cannot be written on the ipad.So what should you do with the read and write XML on the ipad? The method is described as follows:Store the files that need to be serialized in the Application.persistentdatapath directory, which is a platform-dependent path.Write:XmlDocument xmldoc = new XmlDocument ();...Xmldoc.save (application.persistentdatapath+ "//abc.xml");Read:XmlDocument xmldoc = new XmlDocument ();Xmldoc.load (application.persistentdatapath+ "//abc.xml");PS1
I recently had a local area network socket connection problem. To share a socket connection between multiple activities, I searched the internet for information. I still feel that the application method is easy to use. I will post it and share it with you!
In Android, variables are transmitted in different activities. Generally, you can use the Bundle in Intent to add variables.
When saving parameters:
Copy
Set text of different styles in the same TextView of Android, androidtextview
Requirement Analysis:
Most of the time, we need to display text of different styles in the view, but in order to reduce the viewgroup level, we do not want to add many TextView controls to implement text of different styles.
Is there a way to
Let your app have a good user experience on different screen sizes, and you should create a unique XML layout file for each screen size you want to support. Each layout file should be stored in the appropriate resource directory, with the directory name suffix-Tip: The Android system will automatically scale the layout to properly fit the screen. So you don't have to worry about the actual size of the UI el
Naming |--- | --- |16x16 (MDPI) |. png |24x24 (hdpi) |32x32 (xhdpi) |48x48 (xxhdpi) |64x64 (xxxhdpi) |* * NOTE * * Small icons are used for surface action or display as a specific state. For example, in a Gmail app, each message has a star icon marked as important by the message. Notification bar icon (Notification icons)---Sizes (px) | Format and naming--- | --- |22x22 area in 24x24 (MDPI) |. png33x33 area in 36x36 (hdpi) |44x44 area in 48x48 (xhdpi) |66x66 area in 72x72 (xxhdpi) |88x88 area
There is nothing to say about how to get the Wi-Fi SSID in different android versions. androidssid
There's nothing to say ......., why ......., is it fun ......., google's engineer who writes this interface to obtain wifiSSID is cool.
The method for obtaining wifiSSID is as follows:
Android.net. wifi. wifiManager mWifiManager = (WifiManager) MainActivity. this. getSystemService (Context. WIFI_SERVICE);
); button.setcompounddrawables (nullnull null);Just adjust the width and height. The effect is the same. The advantage of this method is not proportional, wide high can break the original size and proportions ! , the y axis of my adjustment is a bit misaligned.Summary: RadioButton set different orientation of the icon method has the above two, if you want to manually set the size of the setcompounddrawables, in advance to give drawable set SetBounds
Because of the actionbar between the different devices for the left side of the hidden part, 4.2 will have an ellipsis, and the previous version needs to click on the virtual key menu can be called out, this method is to cast the 4.2 version below the right ellipsis/** Device Configuration Changes */@Overridepublic void onconfigurationchanged (Configuration newconfig) {Super.onconfigurationchanged (Newconfig);Mactionbardrawertoggle.onconfigurationchan
As we all know, an Android Application usually has multiple activities, and multiple activities communicate through intent. To make every activity "Born" normal, it must be androidmanifest. XML registration. The bold part below indicates that the full path of an instance to be registered is (Package ):Com. lql. Bill. billqueryactivity
package="com.lql.bill" android:versionCode="1" android:versionName="1.0" >
For a
I recently made an iPhoneProgram, You need to use the database, so you are too lazy to learn core data, so you simply use the SQLite database.
I used Lita (http://www.dehats.com/drupal? Q = node/58) Create a database, and then use nsfilemanager to copy the database in the project to the document directory in the program sandbox on the device, the database in the sandbox is different from the size of my original database! In a previous post ([
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