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此代碼用於正常工作,但在更新構建工具和sdk後,我開始獲取此轉換異常。誰知道怎麼修它?android.support.v4.app.FragmentTabHost無法轉換爲android.widget.LinearLayout
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_tab_view);
mTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);
TabWidget tw = (TabWidget) findViewById(android.R.id.tabs);
LinearLayout ll = (LinearLayout) tw.getParent(); //error happens on this line
...
}
main_tab_view.xml
<?xml version="1.0" encoding="utf-8"?>
<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" >
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:id="@+id/realtabcontent"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1" />
<android.support.v4.app.FragmentTabHost
android:id="@android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TabWidget
android:id="@android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0" />
</android.support.v4.app.FragmentTabHost>
</LinearLayout>
<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="@color/blue_actionbar_light"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="10dp"
android:listSelector="@drawable/selectable_background_darkblue" />
</android.support.v4.widget.DrawerLayout>
了java.lang.RuntimeException:無法啓動活動 java.lang.ClassCastException:android.support.v4.app.FragmentTabHost 不能投到android.widget.LinearLayout