fragment依附的activity重启导致界面重叠的解决办法

项目中遇到一个问题：主activity中是fragment，在fragment中点击跳转到一个新的activity，新activity崩溃后app主activity重新onCreat,导致画面重叠

解决办法：

private static final String BUNDLE_FRAGMENTS_KEY = “android:support:fragments”;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    if (savedInstanceState != null && this.clearFragmentsTag()) {
        //重建时清除 fragment的状态
        savedInstanceState.remove(BUNDLE_FRAGMENTS_KEY);
    }
    super.onCreate(savedInstanceState);
}


@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    if (outState != null && this.clearFragmentsTag()) {
        //销毁时不保存fragment的状态
        outState.remove(BUNDLE_FRAGMENTS_KEY);
    }
}

protected boolean clearFragmentsTag() {
    return true;
}