(Cursor, ContentValues etc.)Īnd keep in mind that, When you delete your app in android device, Android will delete the database associated with that app. Of course, these are basic explain but I suggest, you should learn that how to write sql commands and adapt to java code. execSQL() method needs a query for tables (for example create, delete(remove), insert etc.).Ģ- onUpdate method in CrimeBaseHelper.java class has updating database If there is a change in the table as you want. So, SQLiteOpenHelper includes two methods that important.ġ - onCreate method in CrimeBaseHelper.java class runs execSQL() method to create your db and for use it. You can see that "CREATION AND VERSION management." This is because it is a helper class to manage database creation and version management. To unsubscribe from these emails, click here.įirstly, CrimeBaseHelper.java extends SQLiteOpenHelper so what does it mean? Visit Topic or reply to this email to respond. You check your code again, also you will create a table in your db and complete the coding and before run app, you can check to using try catch statement. So I thought it would be true to not explain here. However, if you can’t open the data folder or you can’t see anything in the data folder, I will explain another solution. Then, you will see File Explorer tab in a right panel that contains a data folder.The data folder includes your db you created. db file from Android Studio>Tools>Android>Android Device Monitor. if I double click on the db file nothing happens However, I cannot see the data in the db file - i.e. I found the db file in the device monitor like you said Private static final String DATABASE_NAME = “crimeBase.db” public static final String NAME = “crimes” Should I just copy the entire database folder, and then change the names for my database file in the code? I am trying to duplicate this logic in my own application for school and am trying to figure out what code needs to be copied and where. How does the application only create the crimes table on the first run and not destroy that data on subsequent runs? I see that there is a db.execSQL(“create table” ) command in the CrimeBaseHelper.java onCreate() function (My research is still ongoing.), But if you want to see your db folder, you should follow me,Ĭd users\username\AppData\Local\Android\sdk\platform-toolsĢ- C:\Users\username\AppData\Local\Android\sdk\platform-tools>adb devicesĮmulator-xxxx device - > This is your device and then,ģ- C:\Users\username\AppData\Local\Android\sdk\platform-tools>adb -s emulator-xxxx shellĥ- generic_x86:/data/data/ cd databasesĦ-generic_x86:/data/data//databases $ ls So I explained it through this operating system.Whatever…įind a path that Android/sdk/platform-tools.I found it Users/AppData/Local/Android but maybe you can find it the folder in ProgramFiles/Android/sdk/patform-tools.I don’t know why it happened. I don’t know which system to you used but the terminal is entering into work. Lastly, I tried to Emulator Device and it’s worked for me Secondly, you should look over the source this You should try to another source that I wrote below. Then, If you don’t see something like that. to you to create adapters for your views.Okay, but you don’t forget that these sources want to root for mobiles or emulator devices.įirstly, you should look over source this You could return cursors by doing "return myDataBase.query(.)" so it'd be easy Add your public helper methods to access and get content from the database. Return myDataBase != synchronized void close() mDataBase = SQLiteDatabase.openDatabase(mPath, null, SQLiteDatabase.NO_LOCALIZED_COLLATORS) MyDataBase = SQLiteDatabase.openDatabase(mPath, null, SQLiteDatabase.CREATE_IF_NECESSARY) Public boolean openDataBase() throws SQLException While ((mLength = mInput.read(mBuffer))>0) OutputStream mOutput = new FileOutputStream(outFileName) InputStream mInput = mContext.getAssets().open(DB_NAME) Private void copyDataBase() throws IOException Log.v("dbFile", dbFile " " dbFile.exists()) Check that the database exists here: /data/data/your package/databases/Da Nameįile dbFile = new File(DB_PATH DB_NAME) Log.w(TAG, "createDatabase database created") If database not exists copy it from the assetsīoolean mDataBaseExist = checkDataBase() Public void createDataBase() throws IOException Super(context, DB_NAME, null, 300500) // 1? its Database VersionĭB_PATH = "/data/data/" context.getPackageName() "/databases/" You need to put the sqlite file in the assets folder of your project and you should copy this file to the desired location on the SD card.
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