13问答网 > 安卓出现问题！从一个Activity跳转到另一个activity,代码没有错误，当点击登陆出错

安卓出现问题！从一个Activity跳转到另一个activity,代码没有错误，当点击登陆出错

2025-03-16 02:32:47
推荐回答（2个）
回答1：

mybutton2 明显没有初始化

系统出错都弹这种框， 发Log 才是王道

回答2：

楼上说的对 my_button2 没初始化。

private Button my_button2;

onCreate(....){
...
my_button2 = (Button)findViewById(R.id.xxxxx);
...
}

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