I am getting this, actually its running in an old version but not running in Android 2.2 this is the code... I don't what to replace it with or have an alternative. So i have added the whole code to be able to understand the real. the problem i have seen it run on an older version of android studio.
public class DatabaseHelper extends SQLiteOpenHelper {
public static final String Database_Name= "student.db";
public static final String Table_Name= "student_table";
public static final String COL_1= "id";
public static final String COL_2= "name";
public static final String COL_3= "surname";
public static final String COL_4= "marks";
public DatabaseHelper(Context context){
super(context, Database_Name,null,1);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("create table" + Table_Name + " (id integer primary key auto increment, name text, surname text, marks ineteger)" );
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("drop table if exists" + Table_Name);
onCreate(db);
}
public boolean insertData(String name, String surname, String marks){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
ContentValues.put(COL_2,name);
ContentValues.put(COL_3,surname);
ContentValues.put(COL_4,marks);
long result = db.insert(Table_Name, null,contentValues);
if (result==-1) {
return false;
} else {
return true;
}
}
}
This error happens because you are mixing up static and non-static parts of your class.
Take this example:
public class Test {
public String testVariable = "Honk";
public static String methodTest() {
return testVariable;
}
public static String methodTest2() {
Test test = new Test();
return test.testVariable;
}
public String methodTest3() {
return testVariable;
}
}
This test will fail. You are attempting to get a non-static variable testVariable from a static context methodTest().
Accessed with:
String result = Test.methodTest();
This will work. You are making a new Test class instance, and you can access the variable testVariable normally.
Accessed with:
String result = Test.methodTest2();
This will work. You are accessing a non-static variable testVariable from a non-static context methodTest3().
Accessed with:
Test test = new Test();
String result = test.methodTest();
Without seeing the rest of your code, it is hard to give you a suggestion for what to change. The code you supplied in your question is unlikely to be the culprit.
Your issue is that you are accessing the ContentValues class statically...
ContentValues.put(COL_2,name);
You need to use the variable that you created: contentValues.
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