我们能够对另一个大观点提出小的看法? 例如,我有录像,正在背景中查阅文件。 在这方面,在中间角,我想再发表《形象评论》。
但是,在“线性/轨道性接触”中,只能相互对等或相互对等,反之亦然。 因此,我做了些什么?
我们能够对另一个大观点提出小的看法? 例如,我有录像,正在背景中查阅文件。 在这方面,在中间角,我想再发表《形象评论》。
但是,在“线性/轨道性接触”中,只能相互对等或相互对等,反之亦然。 因此,我做了些什么?
<代码>FrameLayouts,请您在下文中阐述每一观点。 也可通过<代码>RelativeLayout实现。
<代码>FrameLayout为最简单的ViewGroup
,按在编外XML(或按方案增加)中重新定义的顺序排列,封顶 <>Views
;第一则较低,最后将排在上。
这里的一个例子是,有两条<代码>的被打断和抵消,以更好地说明:
这里是XML的实际布局,有两个重叠之处:<代码>TextView箱。 两个箱子的冲销使用android:layout_gravity
,而android:gravity<>>则用于将案文本身放在每个箱子内。
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="100dp"
android:layout_height="100dp">
<TextView
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_gravity="top|left"
android:background="@android:color/holo_blue_light"
android:gravity="center"
android:text="First is below"/>
<TextView
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_gravity="bottom|right"
android:background="@android:color/holo_green_light"
android:gravity="center"
android:text=" Last is on top"/>
</FrameLayout>
Just in case if you want to place a view on top of a ButtonView then use this;
android:elevation="7dp"
for the view which needs to be placed on top of the button.
也可以通过使用https://developer.android.com/training/constraint-layout/index.html” rel=“noretinger”>ConstraintLayout 。 go角新布局。
制约因素 排斥使你能够创造大而复杂的布局,形成一种统一的观点等级(没有排他性的观点组)。
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="4"
tools:context="com.edalat.example.MainActivity">
<VideoView
android:id="@+id/videoView"
android:layout_width="283dp"
android:layout_height="349dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="24dp"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="24dp"
android:layout_marginRight="24dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginLeft="24dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintHorizontal_bias="0.509"/>
<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="@mipmap/ic_launcher"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="24dp"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="24dp"
android:layout_marginLeft="24dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginRight="24dp"
app:layout_constraintRight_toRightOf="parent"/>
</android.support.constraint.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/dp_20"
android:background="@color/yellow"
>
<VideoView
android:id="@+id/videoview"
android:layout_width="wrap_content"
android:layout_centerInParent="true"
android:layout_height="300dp"
android:contentDescription="@string/app_name"
/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/camera"
android:layout_margin="30dp"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true"
android:id="@+id/imageView" />
</RelativeLayout>
在其内部建立相对联系和提出看法,并增加
android:elevation="2dp"
for
可以通过在XML档案中转交布局之前把背布局放在一边来容易地做到这一点。
例如,如果我希望<代码>卡片1。 页: 1 我写道:
<androidx.cardview.widget.CardView
android:id="@+id/cardView2"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.cardview.widget.CardView
android:id="@+id/cardView1"
android:layout_width="match_parent"
android:layout_height="wrap_content">
自以来,第2条 载于
cardView1
>,cardView1
,是另一条。
同样的问题也得到解决。 我这样做的办法是把所需内容放在两个布局之间,并使用<代码>android:layout_marginTop的负值。
该法典:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="-35dp">
如何看待布局:
https://i.stack.imgur.com/YOlEo.png”rel=“nofollow noreferer”> 不允许播放照片,因此,这里与照片链接。
I m relatively new to Android development. I m developing an app with a ListView. I ve followed the info in #1338475 and have my app recognizing the fling gesture, but after the gesture is complete, ...
I m converting my code from using Handler to AsyncTask. The latter is great at what it does - asynchronous updates and handling of results in the main UI thread. What s unclear to me is how to handle ...
I want to be able to download a file with a particular extension from the net, and have it passed to my application to deal with it, but I haven t been able to figure out the intent filter. The ...
I am quite impressed by the workflow I follow when developing Android applications: Define a layout in an xml file and then write all the code in a code-behind style. Is there an equivalent style for ...
To draw landscapes, backgrounds with patterns etc, we used TiledLayer in J2ME. Is there an android counterpart for that. Does android provide an option to set such tiled patterns in the layout XML?
When following the Android Open Source Project instructions on installing repo for use with Git, after running the repo init command, I run into this error: /c/Users/Andrew Rabon/bin/repo: line ...
I read in the Android documentation that by setting my Activity s launchMode property to singleTop OR by adding the FLAG_ACTIVITY_SINGLE_TOP flag to my Intent, that calling startActivity(intent) would ...
I have pretty good skills in PHP , Mysql and Javascript for a junior developer. If I wanted to try my hand as Android Development do you think I might find it tough ? Also what new languages would I ...