Android determines whether the mobile phone is online and returns abnormally.
I wrote a function to determine whether the mobile phone is connected to the Internet. However, I found that everything works normally when the mobile phone
/** * Determine whether the current device is a mobile phone or tablet, code from Google I/O App for Android * @param context * @return tablet returns TRUE, the phone returns False */
public Static Boolean Istablet (context context) { return (context.getresources (). GetConfiguration (). Sc
Android determines whether the mobile phone is root
How to determine whether the mobile phone is root. If the app requires the root permission for some special features, you need to determine whether the app is root. For example,
Android disables System sleep, keeps the screen hidden, and keeps the screen highlighted in the game.
There are two ways to implement this function. One is to declare in the manifest. xml file, and the other isCodeModify the flag of layoutparams. The details are as follows:
1. Use user-Permission declaration in the
I have been entangled in this problem for a long time today. I just fixed it. I hereby record it !! Maybe you can also use it.
In fact, this problem may not be accurately described, and we do not know how everyone calls the "tool bar". Let's take a look at the figure:
It is the red box at the bottom, which can be normally displayed in the past. It seems that after the ADT upgrade, the configuration interface i
In Eclipse open Android virtual phone, open file Explorer, below is empty no data, MNT, system three filesThis is because the simulator is not selected for the sake of opening, you must first open an emulator (AVD), and then on the left to select the emulator, the right will
files like your phone's own file system browser.Whether it's an internal SD card or an external SD card, it's a phone's external storage, and the phone's internal storage and external storage share the same device.Internal Storage Path:All apps installed to the phone will generate a package name folder in the Data/data directory, which is the path to the internal storageApps can read and write files only i
In android mobile phone development, mobile phone numbers are sometimes required. In older SIM cards, China Mobile operator will write the numbers into SIM cards by default, but new SIM cards are often empty. To obtain the mobile phone number, you must manually set it to the SIM card. In the
When Android and iosAPP call payment, the page is blank and my backend is developed with php. I first called the unified order generation and generated the prepay_id pre-payment order number. the code is as follows: {code ...} send the following parameters generated to Android
the result read by this node*/ Public Staticstring getString (context context, string key, String defvalue) {//(Storage node file name, read-write mode) if(sp = =NULL) {SP= context.getsharedpreferences ("config", context. Mode_private); } returnsp.getstring (key, defvalue); }This way, when the mouse clicks through the Listening click event, add the judgment logic Private voidShowDialog () {//determine if there is a local st
currently using WiFi";}else if (NetType = = Connectivitymanager.type_mobile) {Connectinfo + = "\ n currently using mobile connection";}else {Connectinfo + = "\ n currently used connection is:" +nettype;}}return connectinfo;}Determine if the GPS is openpublic static Boolean isgpsenabled (context context) {Locationmanager lm = ((Locationmanager) context. Getsystemservice (Context.location_service));listretur
Method One
Copy Code code as follows:
public static Boolean Istablet (context context) {
Return (Context.getresources (). GetConfiguration (). screenlayout
Configuration.screenlayout_size_mask)
>= Configuration.screenlayout_size_large;
}
Method Two
To determine whether a cell phone or a tablet is done by calculating the size of the device:
Copy Code code as follow
During development, we often need to determine whether the mobile phone is connected to the Internet when reading the network. For how to determine whether the mobile phone is connected to the Internet, refer to the following key code:
[Java] import android. content. Context
Android Development Novice Baidu Map, just started to encounter a problem, no map information, there is only one frame.:Search the Internet to say that it is a key problem, and then apply again. It's still not working.Finally again looked at their own manifest file, found their section of the manifest file: Hope to bring a solution to the same problem.Either t
Shenyangbin in today's project needs to meet a problem like this, in the service need to determine whether the current program is active, in other words, the service in the background run has business needs to detect whether the current program is the program of the service is so good let click Push notification to jump to different pages for different actions. B
1. We can clear the cache data produced by mobile phone software.1. Go to the mobile phone's main interface, and click "main interface"-"application menu", as shown in the following figure.2. Go to the "application list" panel of the mobile phone, and find "system settings" in the panel to go3. then, we can click "
Android applications connected to IOT generally start with the welcome interface to check the network status and synchronize the background server. If the network status is unavailable, the user must be notified that the current network is unavailable, the following describes how to implement this function.
Public static Boolean isnetworkavailable (context) {c
Android determines whether the program is active or running on the mobile phone.
Shenyang binzi encountered such a problem in today's project requirements. In Service, it is necessary to determine whether the current program is active, in other words, services running in the
1. The information of connected equipment is stored in/data/misc/dhcp/dnsmasq.leases2. Its format is:/system ID, no value required/client MAC address/client IP address/client device name/weighted after MAC address, no value required2, refer to the Wifiservie.java Getclientip () method, you can customize this method to obtain the device name, as follows:Reprint Please specify source: Zhou Mushi's csdn blog H
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