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[英]Android center textview in custom ActionBar using a linearlayout horizontally and vertically
[英]Android: Vertically Center TextView in LinearLayout
使用以下布局,我無法垂直居中放置TextView:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:background="#323331">
<TextView
android:id="@+id/title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Hello World"
android:textColor="#FFFFFF"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_gravity="center_vertical"
android:gravity="center_horizontal|center_vertical"
/>
</LinearLayout>
文本始終與LinearLayout的頂部對齊。
(如果重要,此布局將用作活動標題)
如何以Vertical Center方式對齊它?
您的LinearLayout具有android:layout_height =“ wrap_content”,因此適合您TextView的高度。 更改
android:layout_height="wrap_content"
至
android:layout_height="match_parent"
試試這個Android:layout_height =“ fill_parent”
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#323331"
android:gravity="center_vertical"
android:orientation="horizontal" >
<TextView
android:id="@+id/title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:gravity="center_horizontal|center_vertical"
android:text="Hello World"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF" />
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#323331"
android:orientation="horizontal" >
<TextView
android:id="@+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:text="Hello World"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF" />
</LinearLayout>
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