[移动开发]小知识点3

1.Android中fragment切换报错：Can not perform this action after onSaveInstanceState

参考网址：Android can not perform this action after onSaveInstanceState 问题解决_colorfulshark-CSDN博客

解决方法：commit()替换成commitAllowingStateLoss()

old

FragmentTransaction trx = getSupportFragmentManager().beginTransaction();
if (!fragments[0].isAdded()) {
    // 隐藏当前的fragment，add下一个到Activity中
    trx.remove(fragments[choose]).add(R.id.activity_main_new, fragments[0]).commit();
} else {
    // 隐藏当前的fragment，显示下一个
    trx.hide(fragments[choose]).show(fragments[0]).commit();
}

new

FragmentTransaction trx = getSupportFragmentManager().beginTransaction();
if (!fragments[0].isAdded()) {
    // 隐藏当前的fragment，add下一个到Activity中
    trx.remove(fragments[choose]).add(R.id.activity_main_new, fragments[0]).commitAllowingStateLoss();
} else {
    // 隐藏当前的fragment，显示下一个
    trx.hide(fragments[choose]).show(fragments[0]).commitAllowingStateLoss();
}