ScrollView不能包含多個子項,ScrollView can host only one direct child
阿新 • • 發佈:2019-01-31
Android 2.3.3
Eclipse Version: 3.7.0
LogCat
LogCat 報錯資訊:
03-06 11:32:11.126: ERROR/AndroidRuntime(17173): Caused by: java.lang.IllegalStateException: ScrollView can host only one direct child 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.widget.ScrollView.addView(ScrollView.java:229) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.rInflate(LayoutInflater.java:627) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.rInflate(LayoutInflater.java:626) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.inflate(LayoutInflater.java:408) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.app.Activity.setContentView(Activity.java:1657) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at com.tmall.nokia.manage.CopyRight.onResume(CopyRight.java:50) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1150) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.app.Activity.performResume(Activity.java:3832) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2110) 03-06 11:32:11.126: ERROR/AndroidRuntime(17173): ... 12 more
發生錯誤原因分析:
ScrollView僅支援一個子項。
檢視對應的layout xml
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:scrollbars="vertical"> <TextView android:id="@+id/nokia" android:layout_gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:text="@string/text_nokia"></TextView> <TextView android:id="@+id/iphone4s" android:layout_gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/text_iphone4s"></TextView> </ScrollView>
發現ScrollView中有兩個TextView子項。
解決辦法:
在ScrollView 中設LinearLayout為子項 ,將其它View放入LinearLayout。
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:scrollbars="vertical"> <LinearLayout android:id="@+id/tmall" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical"> <TextView android:id="@+id/nokia" android:layout_gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:text="@string/text_nokia"></TextView> <TextView android:id="@+id/iphone4s" android:layout_gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/text_iphone4s"></TextView> </LinearLayout> </ScrollView>
PS。在編輯layout xml時應注意“Error Log”視窗與layout xml編輯視窗的“Graphical Layout”選項卡。