Foreign key for sql lite

[cowboy]

Is it possible to use foreign key on Android OS? I ask this question because this code in my app finished with error when it started on emulator( eclipse did not show any error throw compiling):

 myDB.execSQL("CREATE TABLE IF NOT EXISTS "
    		  + categories
    		  + " (category_id PRIMARY KEY,FOREIGN KEY(parent_id) REFERENCES categories(category_id)),name text,amount float);"); 
      myDB.execSQL("CREATE TABLE IF NOT EXISTS "
    		  + accounts
    		  + " (account_id PRIMARY KEY, name text);");
myDB.execSQL("CREATE TABLE IF NOT EXISTS "
               + tranzactions+ 
               " (transaction_id PRIMARY KEY, FOREIGN KEY(account_id) REFERENCES accounts(account_id)), FOREIGN KEY(category_id) REFERENCES categories(category_id)),t_date date,amount float;");

i ve read that i have to use triggers for eliminate this error.Is it true?