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解决数据库db_version升级时，报出nullpointerexception。主要是FinalDb里面的dropDb方法，需要把db… #103

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解决数据库db_version升级时，报出nullpointerexception。主要是FinalDb里面的dropDb方法，需要把db… #103

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7 changes: 5 additions & 2 deletions src/net/tsz/afinal/FinalDb.java
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Original file line number Diff line number Diff line change
Expand Up @@ -376,8 +376,11 @@ public void dropTable(Class<?> clazz) {

/**
* 删除所有数据表
* Changed by yinchuandong
* In the old version, the variable 'db' is global and is null initially, however, <br/>
* when onUpgrade function is called, the db is passed as local variable
*/
public void dropDb() {
public void dropDb(SQLiteDatabase db) {
Cursor cursor = db.rawQuery(
"SELECT name FROM sqlite_master WHERE type ='table' AND name != 'sqlite_sequence'", null);
if (cursor != null) {
Expand Down Expand Up @@ -891,7 +894,7 @@ public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (mDbUpdateListener != null) {
mDbUpdateListener.onUpgrade(db, oldVersion, newVersion);
} else { // 清空所有的数据信息
dropDb();
dropDb(db);
}
}

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