Android 如何使 LinearLayout 可滚动？
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时间：2020-08-20 10:06:25 来源:igfitidea点击:
How do I make a LinearLayout scrollable?
提问by Sana
After I start the activity I am unable to scroll down to see other buttons and options in the xml defined below.
开始活动后，我无法向下滚动以查看下面定义的 xml 中的其他按钮和选项。
Does anyone know how to make this scrollable?
有谁知道如何使这个可滚动？
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:background="#000044"
android:isScrollContainer="true"
android:orientation="vertical">
<TextView
android:id="@+id/title"
android:text="@string/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<EditText
android:id="@+id/editTitle"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/description"
android:text="@string/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<EditText
android:id="@+id/editDescription"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/location"
android:text="@string/location"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<EditText
android:id="@+id/editLocation"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/startTime"
android:text="@string/startTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<DatePicker
android:id="@+id/DatePicker01"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TimePicker
android:id="@+id/TimePicker01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/endTime"
android:text="@string/endTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<DatePicker
android:id="@+id/DatePicker02"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TimePicker
android:id="@+id/TimePicker02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<Button
android:id="@+id/buttonCreate"
android:text="Create"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
My class code is
我的班级代码是
package com.example.blah;
import android.app.Activity;
import android.os.Bundle;
public class example extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
回答by Cheryl Simon
Place your layout in a ScrollView.
将您的布局放在ScrollView 中。
回答by antonio081014
<?xml version="1.0" encoding="utf-8"?>
<ScrollView ...>
<LinearLayout ...>
...
...
</LinearLayout>
</ScrollView>
回答by Junior Mayhé
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center|left"
android:orientation="vertical">
Your views go here...
</LinearLayout>
</ScrollView>
回答by Ashu Singh
Put your whole content in linear layout which is placed inside ScrollView.
将您的整个内容放在放置在里面的线性布局中ScrollView。
ScrollViewtakes only one layout as its child.
ScrollView仅将一种布局作为其子布局。
isScrollContainer="true"
This property is used when your softkey in android pops up and still you want your view to scroll.
当您在 android 中的软键弹出但您仍然希望您的视图滚动时，将使用此属性。
回答by CoDe
You can implement it using View.scrollTo(..)also.
您也可以使用View.scrollTo(..)来实现它。
postDelayed(new Runnable() {
public void run() {
counter = (int) (counter + 10);
handler.postDelayed(this, 100);
llParent.scrollTo(counter , 0);
}
}
}, 1000L);
回答by p32929
you can make any layout scrollable. Just under <?xml version="1.0" encoding="utf-8"?>add these lines:
您可以使任何布局可滚动。就在下面<?xml version="1.0" encoding="utf-8"?>添加这些行：
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
and at the end add </ScrollView>
最后添加 </ScrollView>
example of a non-scrollable activity:
不可滚动活动的示例：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:verticalScrollbarPosition="right"
tools:context="p32929.demo.MainActivity">
<TextView
android:text="TextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="102dp"
android:id="@+id/textView"
android:textSize="30sp" />
</RelativeLayout>
After making it scrollable, it becomes like this:
使它可滚动后，它变成这样：
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:verticalScrollbarPosition="right"
tools:context="p32929.demo.MainActivity">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="102dp"
android:text="TextView"
android:textSize="30sp" />
</RelativeLayout>
</ScrollView>
回答by Ankit Sanghi
Place all your layouts inside a ScrollView with width and height set to fill_parent.
将所有布局放在 ScrollView 中，宽度和高度设置为 fill_parent。
回答by KUSHA B K
try this below code
试试下面的代码
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/constraintLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context="com.example.blah"
>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:background="#000044"
android:orientation="vertical">
<TextView
android:id="@+id/title"
android:text="@string/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<EditText
android:id="@+id/editTitle"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/description"
android:text="@string/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<EditText
android:id="@+id/editDescription"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/location"
android:text="@string/location"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<EditText
android:id="@+id/editLocation"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/startTime"
android:text="@string/startTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<DatePicker
android:id="@+id/DatePicker01"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TimePicker
android:id="@+id/TimePicker01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/endTime"
android:text="@string/endTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<DatePicker
android:id="@+id/DatePicker02"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TimePicker
android:id="@+id/TimePicker02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<Button
android:id="@+id/buttonCreate"
android:text="Create"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout></ScrollView></RelativeLayout>
