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This paper illustrates the method of realizing SD card reading database with Android programming. Share to everyone for your reference, specific as follows:
First add permissions to the Manifest:
Then add the method in Mainactivity:
Sqlitedatabase db; private final String Database_path = android.os.Environment. Getexte
Rnalstoragedirectory
We were stitching the XML file manually in the previous section, but there was a problem with that in the previous section, such as:Insert the contents of the message sbuffer.append ("I added a So in this section we use the XML serializer to stitch up the text message content.The following code is how to stitch a file with an XML serializer:public class Mainactivity extends Activity {listAs you can see, I intentionally added a body to the content of the text message.Export to query the backup fi
How to determine files? You can use Cursor to traverse the database and compare the value of the INTERNAL_CONTENT_URI field. This is a Uri, which stores the complete path of the multimedia file on the Android mobile phone SD card.
[Java]
Copy codeThe Code is as follows: Uri originalUri = MediaStore. Images. Media. EXTERNAL_CONTENT_URI;
// If it is a Video, it is
When the Android system is started, it will automatically detect the SD card files and collect music files to generate a database file. We only need to access the information in the database table to obtain the required File Code as follows:
Obtain the cursor object to access the media resources in the cursor.
If (cursor. moveToFirst () {do {String title = curso
This article describes how to save the image resources of android Assets to the SD card. If you are interested, refer to the following:Copy codeThe Code is as follows:
Public class ReadBitmap {Public void readByte (Context c, String name, int indexInt ){Byte [] B = null;Int [] intArrat = c. getResources (). getIntArray (indexInt );Try {AssetManager am = null;Am =
The Android program function Copies files in the assets folder to the SD card (including subfolders) of the mobile phone and androidassets.
Recently, the function is to copy all files (including sub-files) in the asset folder to the specified directory. The method used is nothing more than AssetManager. However, the problem here is that both subfolders and subfol
This article for everyone in detail under the Android Read assets picture resources to save the specific implementation of SD card, interested members can refer to Ha, I hope to help you have
copy code code as follows:
public class Readbitmap { public void ReadByte (context C, String name, int indexint) { byte[] b = null; int[] Intarrat = C.getresources ().
In the previous blog article "Android 2.3 SD card mounting process (I)", we briefly introduced the SD card mounting process. It includes the transmission of event messages from the kernel layer to the user layer, and the introduction of vold. This article will continue to in
1. First, register the SD card read and write permissions for manifest
I didn't use MainActivity. class as the software entry here.
Copy codeThe Code is as follows: AndroidManifest. xml
Package = "com. tes. textsd"
Android: versionCode = "1"
Android: versionName = "1.0" type = "codeph" text = "/codeph">
The SD card cannot be automatically mounted during the migration of Android to the platform. Check the related information. In android2.3, the vold program is responsible for checking the sysfs File System of the kernel. After the SD card is inserted, it is automatically mou
This article aims to introduce some basic commands on how to manage the SD card content in the android simulator, and also recommends a more practical tool.
My environment: Windows 7 + Android SDK 2.21. Create an SD card and mount
Android-create a database to the SD cardSQLite comes with SQLiteOpenHelper, while SQLiteOpenHelper stores the database to/data/package name/databasas, in this case, the SQLite database cannot be seen on a mobile phone without a root user. So, in another way, store the database SQLite on the SD card. The getWritableData
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