HorizontalScrollView_应用举例

main.java

package com.demo.scrollview;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;

public class main extends Activity {
/** Called when the activity is first created. */
private LinearLayout mLayout;
private HorizontalScrollView sView;
private final Handler mHandler = new Handler();

    @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.horizontalscroll);
// 创建一个线性布局
        mLayout = (LinearLayout) this.findViewById(R.id.LinearLayout);
// 创建一个ScrollView对象
        sView = (HorizontalScrollView) this.findViewById(R.id.ScrollView);
        Button mBtn = (Button) this.findViewById(R.id.Button);
        mBtn.setOnClickListener(mClickListener);// 添加点击事件监听
    }

// Button事件监听,当点击第一个按钮时增加一个button和一个textview
    private Button.OnClickListener mClickListener = new Button.OnClickListener() {

        @Override
public void onClick(View v) {
            TextView tView = new TextView(main.this);// 定义一个TextView
            tView.setText("ScrollView也是一个Layout布局，可以让它内部的数据显示不下的时候出现垂直滚动条，要注意的是不能在ScrollView中放多个组件");// 设置TextView的文本信息

// 设置线性布局的属性
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                    LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.FILL_PARENT

);
            mLayout.addView(tView, params);// 添加一个TextView控件
            mHandler.post(mScrollToButton);//传递一个消息进行滚动
        }

    };
private Runnable mScrollToButton = new Runnable() {

        @Override
public void run() {
int off = mLayout.getMeasuredWidth() - sView.getWidth();
if (off > 0) {
                sView.scrollTo( off,0);// 改变滚动条的位置
            }
        }

    };

}

HorizontalScrollView.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:andro />
        </LinearLayout>
    </HorizontalScrollView>
</LinearLayout>   

main.java稍作修改可以使用如下两个xml

main.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:andro >
        </Button>
    </LinearLayout>

</ScrollView>

mian1.xml

View Code

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:andro />
        </LinearLayout>
    </ScrollView>

</LinearLayout>