! = Null) {this. unbindService (conn);} super. onDestroy ();} class MyServiceConnection implements ServiceConnection {@ Overridepublic void onServiceConnected (ComponentName, IBinder service) {// get our self-written Binder object iService = IService. stub. asInterface (service) ;}@ Overridepublic void onServiceDisconnected (ComponentName name ){}}}
Okay, so far our code has been written. Now we can test it. The output of the System. out tag will be enough.
Here, let's talk about the applicat
Android development is simple, whether it's on a real-computer debug or a final release to a real machine, as follows:1. Install USB driveMobile phone to be able to connect with the computer, of course, to drive. The effect is that you plug in the phone and the computer shows that the driver is recognized. Official tutorial for driver installation: http://develop
The Android mobile operating system is an open-source system based on the Linux platform. Developers can modify and perform other operations based on their needs. There are many important functions in this system that deserve our research. For example, the Android phone function is one of the basic knowledge points.
Android
The Android phone's graphics lock includes a 3*3,4*4,5*5 dot matrix that connects several dots sequentially to lock/unlock. Take 3*3 as an example, you need to connect at least 4 points and connect up to 9 points at a minimum. In the process of drawing the graph, each of the 9 points is selected, which in fact represents a single digit selected. When we connect 4 points, the resulting graph also indirectly generates a set of passwords. For example, we
/4153933833_bdd657cde7_o.pngBut in recent years, the mobile phone operating system market has been sharply volatile. The leading rebel is Apple's iphone OS, with the second shockwave coming from Google's Android, and Palm's webOS in the fun, see Figure 6. It was commented that1. Symbian is too old to escape the fate of the twilight.2. iphone Maverick, take the fine line, become a fashion vane.3.
Grab Bag preparation 1. Android phones require root access first. A test method for root access: Install and open the Terminal emulator (available through the Android Market, etc.). In the terminal emulator interface input SU and enter, if the error is not root, if the command prompt from the change # is rooted;2. If the Android
because you are using a computer connected to the USB interface wiring or chassis front USB interface, try to test the rear of the chassis USB interface.
7. Mobile phone connection to the computer, the choice of "data storage" phone will prompt "another program is in use."Reason: This is because your phone uses the memory card's theme or ringtone, the solution
Principle Overview:
The acquisition of cell phone battery power is also frequently used in application development. In Android systems, messages that change cell phone battery power are broadcast using Intent, and commonly used Intent actions include Intent. ACTION_BATTERY_CHANGED (when the battery power changes), Intent. ACTION_BATTERY_LOW (battery limit reached
-the-middle proxy technology, there is no need for a specific application or device to remotely run a compromised application even if the Android device has a full patch installed. Using static analysis we found that a significant percentage of applications are likely to remain fragile, and we have confirmed that more than half of the applications that have been randomized tested are indeed less resistant.Therefore, we recommend that you do not use an
mobile phones.
Three major mobile phone system manufacturers released the latest system
Without exception, apple, Microsoft, and Google both released the next-generation mobile phone operating system at their own Developer Conference. Apple released iOS 6 and Microsoft released Windows Phone 8, google also brings the next generation
://developer.android.com/resources/dashboard/screens.html) 3 shows, the current is mainly to the resolution of 800*480 and 854*480 mobile phone users mostly
Figure 3
From the above screen size distribution, we can only consider mobile phones with a density of 1 and 1.5 between 3-inches.
4. uidesign
From the perspective of development, the application provides three sets of UI layout files based on the screen of three types of
Enter a phone number in the text box and click "call. (The correctness of the number is not verified in the small example)
1. Create an android project named "Phone Dialer. Because the new version of ADT supports Chinese projects, you can use Chinese directly. The basic project directory is as follows:
2. Develop the dialing interface.
Open the res/layout/activi
Scenario Description:1. Connect Android phone, adb shell find xxxx, show ADB permission denied;2. Google display needs to run under root authority, ADB root, no error output, again adb shell find XXXX, still show permission denied;3. Found that the phone does not have root access, try Root Wizard and Kingroot one-click root failed.Reason:1. ADB is the
I'm swype, slideit, and other brains from high-end Android input keyboards, but today I want to talk about solid keyboards consisting of various touch keys. Yes, it's the kind of physical keyboard. We used these bulky things before, and knocked out the next great masterpiece in a click. I never thought about using this to reply to text messages or emails, but when I decided to go to the cafe next to me and write something seriously, it would be nice t
Before resolving a boot search network slow problem, found that because the phone process up and then will be actively connected to rild, so to a certain extent, the phone process startup time will affect the speed of network status registration. When the phone process is properly advanced, you can advance the network registration time a little earlier so that th
Unique identification code This is useful in Web applications, such as checking for duplicate registrations.Import Android.provider.Settings.Secure;Private String android_id = secure.getstring (GetContext (). Getcontentresolver (), secure.android_id);We will use the unique identification code of the device more or less in the course of the project, we hope to get a stable and reliable device unique identification code. Today we will cover several ways.1. device_idAssuming we do need to use the i
Set an avatar for Android, take a photo on your phone, or select an image from a local album as the Avatar.??
[Set an avatar for Android, take a photo on your mobile phone, or select an image as an Avatar from a local album]
Social apps such as QQ and Weibo usually have the Avatar setting function. There are two ways t
Hello everyone, This section describes how Android gets the screen size of a mobile phone. This section mainly uses three objects.
Textview ,
Button , And
Displaymetrics , Where
Displaymetrics Is the Key class for getting the phone screen size. This example is very simple. When we click the button to trigger the event
Textview Display the width and resolutio
Modify the Android device information. for example, change the mobile phone model to the iPhone 7 Gold and local version !. Modify the Android device information. for example, change the mobile phone model to the iPhone 7 Gold and local version! First, you must have the ROOT permission on your mobile
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