android-linearlayout

问题 i Have recycle view as follow: <layout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/colorWhite" android:orientation="vertical"> <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center_vertical|center_horizontal" android:textAlignment="center" /> <!-- items inside

问题 I am following tutorial from the book "Android Apps for Absolute Beginners 3rd Edition", and I am stuck with nested LinearLayout for android project in API 19 (4.4.2): Parent LinearLayout is horizontal and it is supposed to hold two child LinearLayout which are vertical and the end result should be like this: But what I get is: I tried several times, cross checked code in book, and explanations but I can't get it right. Here is content of activity_main.xml: <LinearLayout xmlns:android="http:/

问题 I am following tutorial from the book "Android Apps for Absolute Beginners 3rd Edition", and I am stuck with nested LinearLayout for android project in API 19 (4.4.2): Parent LinearLayout is horizontal and it is supposed to hold two child LinearLayout which are vertical and the end result should be like this: But what I get is: I tried several times, cross checked code in book, and explanations but I can't get it right. Here is content of activity_main.xml: <LinearLayout xmlns:android="http:/

问题 I have a question about how to improve the performance of a large horizontal linear layout. I am creating a table like view that can have anywhere from 50 to 2,500 entries. Each entry is a LinearLayout containing a TextView with some simple text. I have implemented the design by utilizing the LinearListView library. This library allows an ListAdapter to be bound to a LinearLayout to display a view in a horizontal or vertical orientation. The way I have implemented this currently is by

问题 I have a question about how to improve the performance of a large horizontal linear layout. I am creating a table like view that can have anywhere from 50 to 2,500 entries. Each entry is a LinearLayout containing a TextView with some simple text. I have implemented the design by utilizing the LinearListView library. This library allows an ListAdapter to be bound to a LinearLayout to display a view in a horizontal or vertical orientation. The way I have implemented this currently is by

问题 i have two linear layouts in one frame layout. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="left" android:orientation="vertical"> <FrameLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/image12"> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical">

问题 On app startup, all children of the LinearLayout (LL) are rendered. But, with the same code when coming from another activity, no children of the LL are visible, nevertheless included in the view tree. See: The activity_main.xml is: <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent"> <LinearLayout android:id="@+id

问题 I'm currently learning the basics of Android programming. I'm able to create a static app with one page and a few buttons. The next step is learn to dynamically create apps, like i'm used to in webapplications. What i'm trying to do is create a simple facebook-like app with some timeline objects, with some text, a like button and the date it was placed. There is a simple NodeJS server which responds to a http GET request with a JSON file. Which is parsed and for each object in the array there

来源： https://stackoverflow.com/questions/58701535/constraintlayout-anchor-view-to-center-of-parent-while-bounding-its-dimensions

来源： https://stackoverflow.com/questions/58701535/constraintlayout-anchor-view-to-center-of-parent-while-bounding-its-dimensions