小编Dev*_*mil的帖子

我正在使用浮动操作按钮.我想在按FAB按钮时单击"禁用Recyclerview项目".我试过这种方法但没有工作setClickable(true);

我的布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:fab="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="#fff"
    tools:context="com.hartwintech.socialchat.activity.IconTabsActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:scrollbars="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        >

    </android.support.v7.widget.RecyclerView>

    <com.github.clans.fab.FloatingActionMenu
        android:id="@+id/floatmenu"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_marginBottom="60dp"
        android:layout_marginRight="16dp"
        fab:fab_showAnimation="@anim/show_from_bottom"
        fab:fab_hideAnimation="@anim/hide_to_bottom"
        fab:menu_labels_style="@style/MenuLabelsStyle"
        fab:menu_shadowColor="#444"
        fab:menu_colorNormal="#FFB805"
        fab:menu_colorPressed="#F2AB00"
        fab:menu_colorRipple="#D99200"/>

</RelativeLayout>

Java类

floatMenu.setOnMenuToggleListener(new FloatingActionMenu.OnMenuToggleListener() {
            @Override
            public void onMenuToggle(boolean opened) {
                if (opened) {
                    final int color = R.color.transp;
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                        mrecyclerview.setClickable(false);
                        mrecyclerview.setEnabled(false);
                        mrecyclerview.setForeground(new ColorDrawable(ContextCompat.getColor(getContext(), color)));
                    }
                } else {
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                        mrecyclerview.setClickable(true);
                        mrecyclerview.setEnabled(true);
                        mrecyclerview.setForeground(null);
                    }
                }
            }
        });

如何删除该字符串中的第一行和最后一行

String key = "-----BEGIN PUBLIC KEY-----\n" +
                        "MIGeMA0GCSqGSIb3DQEBAQUAA4GMADCBiAKBgE0JOa5WUcifbDnnQWB2WKOOODwq\n" +
                        "JUxu/7fG2BaynwVRSifljrzGjqpS24R0ss3cZZSKfD2GszG0aVd5T1Yvh4kSOzsx\n" +
                        "arj8QUkfW/EL5ClhDv8LVtkErbTU42QLUUTl5izyKZXaHFdBnJZ8jqXk4AlK22mp\n" +
                        "LcMadrpv7SzQJq1HAgMBAAE=\n" +
                        "-----END PUBLIC KEY-----";

我想要一个像这样的输出字符串

String key ="MIGeMA0GCSqGSIb3DQEBAQUAA4GMADCBiAKBgE0JOa5WUcifbDnnQWB2WKOOODwq
    JUxu/7fG2BaynwVRSifljrzGjqpS24R0ss3cZZSKfD2GszG0aVd5T1Yvh4kSOzsx
    arj8QUkfW/EL5ClhDv8LVtkErbTU42QLUUTl5izyKZXaHFdBnJZ8jqXk4AlK22mp
    LcMadrpv7SzQJq1HAgMBAAE="