在Java中的字符串由完成.equals（）的比较或 equalsIgnoreCase （）方法，而不是与 ==
这可能是不是你的到达声明的原因。如果你这样做这个==是意味着你检查，如果两者是相同的参考。 （是它的到达，因为他们两个都是字符串：P）

Comparing of strings in Java is done by .equals() or equalsIgnoreCase() methods, not with == Which might be the cause your statement not being reachable. If you do "this"=="that" means you are checking if both of them are of same reference. (yes its reachable, since both of them are strings :P )

请确保您的数据库对象不为空，也检查是否有任何异常被捕获。加：尝试从光标还删除的数据。

Make sure your database object is not null and also check if any exception is caught. Plus: Try removing the data also from the cursor.