[英]Exception while using SQLiteAssetHelper class
我正在嘗試使用SQLiteAssetHelper將預先填充的數據庫復制到android應用中。 我的設備(Nvidia Shield和Motorola Phone)上裝有Android-7。 從設置->應用程序-> MyApp我啟用了日歷 , 位置和存儲權限
我在清單文件中也具有以下權限
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
當我將數據庫保留在assets/databases/databases
文件夾中時,出現以下異常:
引起原因:com.readystatesoftware.sqliteasset.SQLiteAssetHelper $ SQLiteAssetException:無法將/data/user/0/com.funcheap.funmapsf/databases/databases/MySFfuncheapDatabase.db寫入數據
當我將數據庫保留在assets/databases
文件夾中時,出現以下異常:
引起原因:com.readystatesoftware.sqliteasset.SQLiteAssetHelper $ SQLiteAssetException:資產或目標文件夾中的數據庫/數據庫/MySFfuncheapDatabase.db文件(或.zip,.gz歸檔文件)不可寫
不幸的是,這個問題對我沒有幫助
正如@miket所說的,如果您引用內部路徑,Android將使用該引用,我遇到了這個問題,這是我非常草率的測試代碼。
public void getINTERNAL(){
Context context = this;
File file = new File(context.getFilesDir().getAbsolutePath());
String NT = String.valueOf(file);
THE_PATH = NT+"/";
System.out.println("INTERNAL PATH =========> "+THE_PATH);
}
public void getAvailable(){
//getINTERNAL();
String state = Environment.getExternalStorageState();
if (state.equals(Environment.MEDIA_MOUNTED) && (!state.equals(Environment.MEDIA_MOUNTED_READ_ONLY))) {
File removable = ContextCompat.getExternalFilesDirs(this, null)[1];
THE_PATH = String.valueOf(removable);
if(THE_PATH.length() > 4) {
//THE_PATH = THE_PATH.substring(0, THE_PATH.length() - 5);
THE_PATH = THE_PATH + "/Documents/";
System.out.println("new path ====> "+THE_PATH);
}
System.out.println("EXTERNAL PATH ====> " + THE_PATH);
System.out.println("Internal Path used if EXTERNAL PATH = NULL ");
//getINTERNAL(); DO NOT CALL HERE YOU WILL CHANGE THE_PATH TO internal
// no need to set THE_PATH for internal storage it will default on its own
// WHY DOES THIS HAPPEN THE_PATH variable is PUBLIC STATIC hence it is GLOBAL
}
}
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