Reading MMS files in Android apps involves a database/data of Android/COM. Android. providers. telephony/databases/mmssms. dB and a folder/data/Data/COM. Android. providers. telephony/app_parts. To back up MMS, you can copy the database and folder to the hard disk, but in th
the program, and you do not need to go through the android permission check when accessing it, you can still directly access it using Java I/O APIs. The so-called non-private data is only files or data stored on sdcard,
// You can use Java I/O APIs to directly open files on sdcard.
Filereader file = new filereader ("/
Capture log files tested by ANDROID apps1. Introduction to log file classification: logcat main, logcat radio, logcat events, tcpdump, and QXDM log status information on the Qualcomm platform: adb shell cat/proc/kmsg, adb shell dmesg, adb shell dumpstate, adb shell dumpsys, adb bugreport, project mode and other 2 LOG Capture details l real-time printing adb logcat-B main-v time> app. log prints the logadb l
Link: http://blog.csdn.net/wuxianglong/article/details/6335683
In many cases, we need to access the resource files in Android. These resource files are mainly divided into two types, these files are not compressed when they are packaged into APK files; the other is
manner
Uninstall the app and delete only the data you stored ingetExternalFilesDir()目录下的文件
外部存储适用于不需要存储限制的文件以及你想要与其他app共享的文件或者是允许用户用电脑访问的文件 app默认安装在内部存储中,通过指定android:installLocation 属性值可以让app安装在外部存储中。 获取外部存储权限: Read and write: ... > android:name= "Android.permission.WRITE_EXTERNAL_STORAGE"/> ... Manifest > Read: ... > android:name= "Android.permission.READ_EXTERNAL_STORAGE"/> ... manifest> You do not need any perm
applications;
Activity. mode_append // This mode checks whether the file exists and appends the content to the file. Otherwise, a new file is created.
// If you want the file to be read and written by other applications, You can input activity. mode_world_readable + activity. mode_world_writeable.
View the files generated by preferences (select the current file and export this file. You can see that the sto
directory that do not generate resource IDs; res/drawable Graphics save images in multiple formats 4. System resources: There are a lot of system resources in Android that are stored in the /platforms/android- version of the SDK /data/res in the catalogue; used in code:Andorid. R. resource File Types . Resources ID , in XML referenced in file: @
feel played is it.
In the Copy_src_and_jni () function, the Java file is copied using the Cp-rf $HELLOWORLD _root/proj.android/src $APP _dir/proj.android, Helloworld_ ROOT is pointing to $cocos2dx_root/samples/hellocpp, and we've found Java files under Hellocpp, so if we're going to solve this problem, we can put \cocos2dx\platform\android\ Java\src\ the files u
Exporting a jar file in Android Studio is not as simple as it is in eclipse, but it's not too complicated. You need to export the jar file using the Gradle script.We don't want to export jar files with classes like R.class and buildconfig.class, so we need to write Gradle scripts to implement custom JAR file content.First open the Build.gradle file under the module project, write the Task command under the
Introduction and use of Android resource files
1. Resource introduction:Defined in the res Directory: strings, colors, arrays, menus, images, videos, etc.; use these resources in applications;2. advantages of using resources: reduces the amount of code and facilitates later maintenance;3. Resource types:Directory resource type descriptionRes/anim xml animation information, frame animation or this complement
(s ,"");} Catch (Exception e ){E. printStackTrace ();}}
Orz, did you find anything? By the way, these two functions have nothing to do with Android ..So they can also be used in other standard java programs.In Android, compared to reading and writing strings only and parsing them themselves, or saving the configuration with xml,Properties is simpler and more intuitive, because self-parsing requires a lot o
save the image as Icon_ca.png (any name except Icon.png) and put it in the default res/drawable/ directory. Then, res/drawable-en-rCA/ create the file in and, and use the res/drawable-fr-rCA/ icon.xml bitmap > element to reference the icon_ca.png resource. This way, you only need to store one version of the PNG file and two small XML files that point to that version. (XML file example below)DrawableTo create a pointer to an existing Drawable alias, u
can store more data.
2. Store database files in the SD card!
What is sqlitedatabase?
An instance of sqlitedatabase represents an SQLite database. Through some methods of the sqlitedatabase instance, we can execute SQL statements to add, delete, query, and modify data databases. Note that the database is private to an application, and the database name is unique in an application.
What is sqliteopenhelper?
According to this name, we can see that th
I. Overview of the problem
In Android development, the ability to download files, such as app version updates, is often used. After API Level 9, the Android system provides us with the Downloadmanager class, which is a system service provided by Android, which we complete with the file download. The entire d
Android-storage of configuration files SharedPreferences for data storageMost of the time, the software we develop needs to provide users with the software parameter setting function, such as our commonly used QQ, users can set whether to allow strangers to add themselves as friends. For saving software configuration parameters, if the window software is used, we usually use the INI file for saving. If it i
Add a file directly to the SD card of the simulator in ddms. If an error occurs, the following error occurs:Failed to push xxxxx.txt on emulator-: Read-Only file system error, because your sdcard permission is insufficient and you need to create an sdcard directly.
I. First create an sdcard. The name of the sdcard I created is sdcard. IMG (the name is random and ends with the name of the IMG extension)
Enter the DOS to point to the directory e: \ android
How does an Android mobile phone transmit files through Bluetooth?
Actually passedBluetoothTransmissionFileThisFunctionIt was also implemented recently. Previously, the Bluetooth function of Android was embarrassing because it can only connect to BluetoothHeadphonesNow you haveBluexOfSoftwareSolutionThe problem of Bluetooth transmission.
I. Sending of B
I recently started learning Android programming and wrote a small project myself. One requirement is to initialize an SQLite database from a file. That is, I have a file containing a lot of SQL statements. I want my android program to execute this SQL statement and initialize the database when it is started for the first time. However, this SQL statement will not be executed in subsequent executions, it can
When the Android development process involves the operation of the database, we usually need to export the app's database file (i.e., *.db file) to verify that the database additions and deletions are correct.Because the real machine does not have access to the protected data storage area without root, you can choose to export the data files on the emulator for simplicity. This article is used to verifyA co
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