Android Can';不要将相对位置添加到抽屉布局
我的主要活动Android Can';不要将相对位置添加到抽屉布局,android,android-layout,drawerlayout,Android,Android Layout,Drawerlayout,我的主要活动 protected void onCreate(Bundle savedInstanceState) { setContentView(R.layout.activity_main); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerList = (ListView) findViewById(R.id.left_drawer); xml是: <and
protected void onCreate(Bundle savedInstanceState)
{
setContentView(R.layout.activity_main);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
xml是:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/black" >
<!-- As the main content view, the view below consumes the entire
space available using match_parent in both dimensions. -->
<FrameLayout
android:id="@+id/sample_content_fragment"
android:background="#242a31"
android:layout_weight="2"
android:layout_width="match_parent"
android:layout_height="0px" >
</FrameLayout>
<!-- android:layout_gravity="start" tells DrawerLayout to treat
this as a sliding drawer on the left side for left-to-right
languages and on the right side for right-to-left languages.
The drawer is given a fixed width in dp and extends the full height of
the container. A solid background is used for contrast
with the content view.
-->
<RelativeLayout
android:layout_width="240dp"
android:layout_gravity="start"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/left_LinearLayout"
android:orientation="vertical"
android:layout_gravity="start"
android:layout_width="240dp"
android:layout_height="wrap_content">
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/editText" />
</LinearLayout>
<ListView
android:below="@+id/left_LinearLayout"
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:listSelector="@drawable/selector_bg_key"
android:background="@color/default_color"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="0dp" />
</RelativeLayout>
</android.support.v4.widget.DrawerLayout>
但应用程序因错误而崩溃:
android.widget.LinearLayout$LayoutParams不能强制转换为
android.support.v4.widget.DrawerLayout$LayoutParams
我需要将编辑字段添加到左侧菜单,或者我应该通过适配器添加它,您可能正在尝试以下操作:
mDrawerLayout.openDrawer(mDrawerList);
但是,您的列表视图
的父项不是抽屉布局
。现在,您应该使用RelativeLayout
作为您的抽屉:
<RelativeLayout
android:id="@+id/left_drawer"
android:layout_gravity="start"
android:layout_width="240dp"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/left_LinearLayout"
android:orientation="vertical"
android:layout_gravity="start"
android:layout_width="240dp"
android:layout_height="wrap_content">
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/editText" />
</LinearLayout>
<ListView
android:layout_below="@+id/left_LinearLayout"
android:id="@+id/drawer_list"
android:layout_width="240dp"
android:layout_height="match_parent"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="0dp" />
</RelativeLayout>
然后像这样打开抽屉:
mDrawerLayout.openDrawer(mDrawer);
看起来您需要添加更多代码。
mDrawerLayout.openDrawer(mDrawer);