Work has done mobile phone app project, front-end and Android or iOS programmers to complete the development of the entire project, the development process with the iOS program with basically no problem, and the Android various machines and ROM problems are many, It also gives me an interest in learning about Android a
Android applications are written in the Java programming language. The Android SDK tool compiles your code-along with any data and resource files-into an APK:Android Package , which is an .apk archive file with a suffix. An APK file contains all the content of an Android app, which is a file that is used by
)Application name Get method: Packagemanager.getapplicationlabel (ApplicationInfo)Access method using permissions: Packagemanager.getpackageinfo (packagename,packagemanager.get_permissions). requestedpermissionsGet the specific information method by ResolveInfo:Package name Get method: Resolve.activityInfo.packageNameIcon Get Get Method: Resolve.loadicon (Packagemanager)App Name Get method: Resolve.loadlabe
Tagged with: Android Android app Android developer Android emulator Android StudioAndroid official Getting Started document [2] Run your appRunning Your AppRun your applicationThis lesson teaches1.Run on a Real Device2.Run on the
application market, which day the product manager proposed to jump to Samsung's application market, after all, Samsung mobile phone in the domestic share or row before several, and then use the method above, found that the Samsung market did not support this way, No wonder Samsung phones are losing their home market. However, the efforts of the author finally found the following method: public static void Gotosamsungappsmarket ( context context, Stri
wrote a Quick Map application for my wife. This application is mainly used to solve her problem with the existing navigation application. She only wants a contact list and a path to the location of these contacts.
Here, you may think that I need to apply for access to all the contact information to complete this application: Hahaha, you are wrong again! If you read my source code, you will know that I used the Intent ACTION_PICK to start the application to get the contact address:
Intentin
Android Basics Getting Started Tutorial--10.2 Smsmanager (SMS manager)tags (space delimited): Android Basics Getting Started TutorialIntroduction to this section:
This section brings in the Android Smsmanager (short-term manager), known as the name, is used to manag
for my wife. This application is mainly used to solve her problem with the existing navigation application. She only wants a contact list and a path to the location of these contacts.
Here, you may think that I need to apply for access to all the contact information to complete this application: Hahaha, you are wrong again! If you read my source code, you will know that I used it.ACTION_PICKThis Intent starts related applications to obtain the contact address:
Intentintent=newIntent(Intent.ACT
Shareitem.setlabel (Resolve.loadlabel (Pmanager). toString ());
Set Package Name
Shareitem.setpackagename (Resolve.activityInfo.packageName);
}
Summarize:Get the specific information method by PackageInfo:Package name Get method: Packageinfo.packagenameIcon Get Get Method: Packagemanager.getapplicationicon (ApplicationInfo)Application name Get method: Packagemanager.getapplicationlabel (ApplicationInfo)Access method using permissions
to use, but to update and other building activities will be error. 3.6 The certificate update must match the previous certificate.4. Sign the application: 4.1 Three elements: Digital certificate, APK, the use of a digital certificate to the APK file (you can use Jarsigner in the JDK) 4.2 5. The default signing certificate used for debugging cannot be used for production deployments because it is valid for only 365 days.6.android requires that updates
the network information, such as whether the current network connection is valid
Android.permission.ACCESS_SURFACE_FLINGER
Access Surface Flinger
Low-level graphical display support on Android platform, commonly used in game or Camera preview interface and bottom mode screen
Android.permission.ACCESS_WIFI_STATE
Get WiFi status
Get the status of your current WiFi access and information about your WLAN ho
Android Permissions Daquan
Access Registration Properties
Android.permission.ACCESS_CHECKIN_PROPERTIES, read or write permission to enlist Check-in Database property sheet
Get the wrong position
Android.permission.ACCESS_COARSE_LOCATION, through WiFi or mobile base station way to obtain user error of latitude and longitude information, positioning accuracy of about 30~1
Features: Anti-compilation APK reduced permissions and re-signingScenario: Many software applications that may cause charges (such as texting, calling numbers) or disclosing privacy (such as reading a newsletter) are not reassuring. For example: fetion, ink weather, ireader, etc. are listed in this column. In order to be able to use with ease, need to do some hack work, reduce the permissions of the applica
Brief introduction:This article describes how developers ' apps use media storage services (including Mediascanner, Mediaprovider, and media information parsing) in Android, and how to update the app's new or modified files to the media database, How to hide the files generated by the app in the multimedia application, how to monitor the changes of the media database and so on.Android has an original set of
The monkey test was used before the company's project was launched recently. This error always occurred: exception: view not attached to window manager. This error occurs when the dismiss method of dialog is called when the activity disappears. My solution is:Judge the current activity. isfinishing () +! = NULL + isshowing (). These three methods prevent this problem.
Exception: view not attached to Window Manager
-compiled system to have the privilege. If the permission of the application is modified. Because old applications are associated with data, you need to re-download the application and try to restore the factory settings or delete all data associated with the application through the Application Manager. System uid = 1000 is a special permission process.
Aid_system is defined as 1000, that is, the UID of the system server. From the code above, servicem
(Context.device_policy_service); ComponentName = new ComponentName (this, lockreceiver.class); if (policymanager.isadminactive (componentname)) {//Determines if the permission (Device Manager is activated) Policymanager.locknow ();//Direct Lock screen fi Nish (); }else{Activemanager ();//Activate Device Manager Get Permissions finish (); }}
Android.app.ApplicationPackageManager.getPackageInfo (applicationpackagemanager.java:106) E/hpnsservice (24810): ... 3 moreWhy does package manager have died occur? Frameworks/base/core/java/android/app/applicationpackagemanager.java:102 @Override103 Public packageinfo getpackageinfo (String packagename, int flags) 104 throws namenotfoundexcep
In the Android design, access to resources or network connections, to get these services need to declare their access rights, otherwise it will not work properly. There are many kinds of permissions in Android, here will be a variety of access rights one by one listed, for everyone to use the reference.Android.permission.EXPAND_STATUS_BAR allows a program extensi
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