zoukankan      html  css  js  c++  java
  • ScrollView简单用法

    理论部分

    1、ScrollView和HorizontalScrollView是为控件或者布局添加滚动条

    2、上述两个控件只能有一个孩子,但是它并不是传统意义上的容器

    3、上述两个控件可以互相嵌套

    4、滚动条的位置现在的实验结果是:可以由layout_width和layout_height设定

    5、ScrollView用于设置垂直滚动条,HorizontalScrollView用于设置水平滚动条:需要注意的是,有一个属性是    scrollbars 可以设置滚动条的方向:但是ScrollView设置成horizontal是和设置成none是效果同,HorizontalScrollView设置成vertical和none的效果同。

    实践部分

    1、一个小案例

    <?xml version="1.0" encoding="utf-8"?>
    <HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <ScrollView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" >

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical" >

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />

                <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:text="@string/hello"
                    android:textSize="90sp" />
            </LinearLayout>
        </ScrollView>

    </HorizontalScrollView>

    public class ScrollerActivity extends Activity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
      // TODO Auto-generated method stub
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main5);
     }
    }

  • 相关阅读:
    20200301(4)
    网络工程横道图
    20200229追根溯源(3)
    20200229(2)
    追根溯源 (1)
    20200228 down(0)
    20200228
    7-7 古风排版 (20分)
    不写了天梯赛 屁股疼死了
    字符串翻转(面试题2)
  • 原文地址:https://www.cnblogs.com/achen0502/p/5207533.html
Copyright © 2011-2022 走看看