Mobile Develop

1. resource file name can only be lowercase, or error will not generate R.java file2.R files should be imported into your project's package instead of Android. R3. Database operation using Sqliteopenhelper4.values folder you define your own XML file,

1. Re-installation failed due to different application signatures.Remove the original package and install it once again. Execution on the command line: adb uninstall Package_name here is androidmanifest.xml inside The data value of the element

Package Com.example.radiobutton_01;import Android.app.activity;import Android.os.bundle;import Android.view.View; Import Android.widget.button;import Android.widget.radiobutton;import Android.widget.radiogroup;import Android.widget.toast;public

1) Layout-related properties①android:layout_weight= "1.0", Layout_weight is used to assign values to many of the view's importance in a linear layout. All views have a layout_weight value, which defaults to zero, meaning how much screen space you

Some of the more time-consuming things in Android can't be placed in the UI thread, because the ANR (application No Response) error occurs when the time is over a period of time (about 5 seconds). So some more time-consuming operations, such as

(1) PhenomenonThe picture on the Tabbar becomes a square block of gray, and the original picture is gone.(2) ReasonThe picture on Tabbar is not a picture in nature, but a shape picture. The system to our use of the picture is just the shape of the

SOURCE Code:https://github.com/maxwin-z/xlistview-androidTwo interfaces are available:A) Ixlistviewlistener: Trigger drop-down refresh, pull-up load moreb) Onxscrolllistener: This is the same as the native Onscrolllistener, but it also triggers the

floatCacheSize = Dirsize (NewFile (environment.getexternalstoragedirectory () + appconstants.app_cache_folder)/1024.0f/1024.0f; Tvcachesize.settext ( (int) (CacheSize *))/100.0f + "M");/*** Return the size of a directory in bytes*/Private

Effect:Code: "GitHub" Unity_ios_plugin_demoKey: 1, Unity calls ios:1.1, in Unity C #:[DllImport ("__internal")]private static extern int _showselecttitledialog (string title, String msg);1.2. In Xcode objective-c:extern "C" { int

C # Methods for intercepting system messages Application.addmessagefilter Application.addmessagefilter This method can receive messages from the system: first define a class, Inherit the IMessageFilter interface code as follows:Internal class

In development often encounter the use of the Android hidden API, the usual practice is to call through reflection, but the reflection of the performance of the impact, the code is not intuitive, I prefer to directly use those APIs. So this is the

The main topic: a tree (not necessarily a two-fork tree!!) ), the tree has an apple on its node and requires the following:1. Specify a node, if the node originally has an apple to take it, if there is no Apple then fill in an apple2. Ask a node and

What is handler?Handler is primarily used by users to communicate with the thread they create, and the Andorid application maintains a message queue in the main thread, communicating between threads through a Message object. Processing message

Recently, the company is developing an Android device to project the screen onto the phone, while the phone can also touch, keyboard operation. In this way, the purpose of screen sharing is achieved.Thought for a moment, the main idea:1. Encode the

iOS Send mailby WusheyingThe first type:NSString *myemail = @ "[email protected]"; NSString *toemail = @ "[email protected]"; NSString *emaildetail = [NSString stringwithformat:@ "Mailto:%@?cc=%@&subject=feedback!&body=dear:", Toemail , Myemail];

ViewCreate a Colors.xml file to define two colors1. 2. name="blue_pressed"> @android: Color/holo_blue_dark 3. name="blue_normal">@ Android:color/holo_blue_light4. Here we use the holo tones of Android:1. 2. name="Holo_blue_dark">#

Note: The code under this article has an unknown number of variables, so it is not possible to run directly, I also transfer othersAfter IOS6.0 system, compatible with iOS5.0 and iOS6.0 map navigation, need two steps#define System_version_less_than (

I used Java to implement Android automation tests in two previous articles (1) How to install and uninstall an application (Java), Android Automation test (2) Find objects by ID (Java). But in essence, it is implemented with Monkeyrunner

The previous article was written on Android Automation test (1) How to install and uninstall an application (Java), and then explore if you are looking up an object by ID in a normal Java application1, the class library depends on:The Library

In the use of Baidu map in Android, we can first look at the corresponding SDK information Baidu map: HTTP://DEVELOPER.BAIDU.COM/MAP/INDEX.PHP?TITLE=ANDROIDSDK, It's basically about all the configuration in Android, API calls and other operations,