Answers
用ListView控件来控制横行滚动，实现代码：
/**
* 自定义支持横向滚动的ListView
*
*/
public class HVListView extends ListView {
/** 手势 */
private GestureDetector mGesture;
/** 列头 */
public LinearLayout mListHead;
/** 偏移坐标 */
private int mOffset = 0;
/** 屏幕宽度 */
private int screenWidth;
/** 构造函数 */
public HVListView(Context context, AttributeSet attrs) {
super(context, attrs);
mGesture = new GestureDetector(context, mOnGesture);
}
/** 分发触摸事件 */
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
super.dispatchTouchEvent(ev);
return mGesture.onTouchEvent(ev);
}
/** 手势 */
private OnGestureListener mOnGesture = new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
return false;
}
/** 滚动 */
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2,
float distanceX, float distanceY) {
synchronized (HVListView.this) {
int moveX = (int) distanceX;
int curX = mListHead.getScrollX();
int scrollWidth = getWidth();
int dx = moveX;
//控制越界问题
if (curX + moveX < 0)
dx = 0;
if (curX + moveX + getScreenWidth() > scrollWidth)
dx = scrollWidth - getScreenWidth() - curX;
mOffset += dx;
//根据手势滚动Item视图
for (int i = 0, j = getChildCount(); i < j; i++) {
View child = ((ViewGroup) getChildAt(i)).getChildAt(1);
if (child.getScrollX() != mOffset)
child.scrollTo(mOffset, 0);
}
mListHead.scrollBy(dx, 0);
}
requestLayout();
return true;
}
};
/**
* 获取屏幕可见范围内最大屏幕
* @return
*/
public int getScreenWidth() {
if (screenWidth == 0) {
screenWidth = getContext().getResources().getDisplayMetrics().widthPixels;
if (getChildAt(0) != null) {
screenWidth -= ((ViewGroup) getChildAt(0)).getChildAt(0)
.getMeasuredWidth();
} else if (mListHead != null) {
//减去固定第一列
screenWidth -= mListHead.getChildAt(0).getMeasuredWidth();
}
}
return screenWidth;
}
/** 获取列头偏移量 */
public int getHeadScrollX() {
return mListHead.getScrollX();
}
}
代码说明：自定义HVListView继承自ListView，增加了横向手势监听，并在横向滚动时手动触发Layout容器内的滚动。
Activity ：
public class TestHVListViewActivity extends Activity {
private LayoutInflater mInflater;
private HVListView mListView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mListView = (HVListView) findViewById(android.R.id.list);
//设置列头
mListView.mListHead = (LinearLayout) findViewById(R.id.head);
//设置数据
mListView.setAdapter(new DataAdapter());
mInflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
}
private class DataAdapter extends BaseAdapter {
@Override
public int getCount() {
return 50;//固定显示50行数据
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = mInflater.inflate(R.layout.item, null);
}
for (int i = 0; i < 8; i++) {
((TextView) convertView.findViewById(R.id.item2 + i)).setText("数据" + position + "行" + (i + 2) + "列");
}
//校正（处理同时上下和左右滚动出现错位情况）
View child = ((ViewGroup) convertView).getChildAt(1);
int head = mListView.getHeadScrollX();
if (child.getScrollX() != head) {
child.scrollTo(mListView.getHeadScrollX(), 0);
}
return convertView;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
}
}
代码说明：为ListView提供了模拟数据。注意getView里面还有一段代码是校验，是专门处理同时横向和纵向滚动出现错位的情况。
main.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:background="#eeffcc"
android:layout_width="wrap_content" android:layout_height="fill_parent">
<include layout="@layout/item" />
<com.nmbb.HVListView android:id="@android:id/list"
android:background="#FFB84D" android:fastScrollEnabled="true"
android:fadingEdgeLength="0.0sp" android:layout_width="1400.0dip"
android:layout_height="fill_parent" android:drawSelectorOnTop="false"
android:cacheColorHint="@null" android:dividerHeight="1.0dip">
</com.nmbb.HVListView>
</LinearLayout>
代码说明：注意这里需要指定HVListView的layout_width为滑动范围值，由item累加。
item.xml ：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView android:id="@+id/item1" android:text="不动列头1"
android:textSize="20.0sp" android:gravity="center"
android:layout_width="100.0dip" android:layout_height="wrap_content"></TextView>
<LinearLayout android:orientation="horizontal" android:id="@+id/head"
android:layout_width="1200.0dip" android:layout_height="wrap_content">
<TextView android:id="@+id/item2" android:text="不动列头2"
android:textColor="@android:color/black" android:textSize="20.0sp"
android:singleLine="true" android:gravity="center"
android:layout_width="150.0dip" android:layout_height="wrap_content"></TextView>
<TextView android:id="@+id/item3" android:text="不动列头3"
android:textSize="20.0sp" android:singleLine="true" android:gravity="center"
android:layout_width="150.0dip" android:layout_height="wrap_content"></TextView>
<TextView android:id="@+id/item4" android:text="不动列头4"
android:textColor="@android:color/black" android:textSize="20.0sp"
android:singleLine="true" android:gravity="center"
android:layout_width="150.0dip" android:layout_height="wrap_content"></TextView>
<TextView android:id="@+id/item5" android:text="不动列头5"
android:textSize="20.0sp" android:singleLine="true" android:gravity="center"
android:layout_width="150.0dip" android:layout_height="wrap_content"></TextView>
<TextView android:id="@+id/item6" android:text="不动列头6"
android:textColor="@android:color/black" android:textSize="20.0sp"
android:singleLine="true" android:gravity="center"
android:layout_width="150.0dip" android:layout_height="wrap_content"></TextView>
<TextView android:id="@+id/item7" android:text="不动列头7"
android:textSize="20.0sp" android:singleLine="true" android:gravity="center"
android:layout_width="150.0dip" android:layout_height="wrap_content"></TextView>
<TextView android:id="@+id/item8" android:text="不动列头8"
android:textColor="@android:color/black" android:textSize="20.0sp"
android:singleLine="true" android:gravity="center"
android:layout_width="150.0dip" android:layout_height="wrap_content"></TextView>
<TextView android:id="@+id/item9" android:text="不动列头9"
android:textSize="20.0sp" android:singleLine="true" android:gravity="center"
android:layout_width="150.0dip" android:layout_height="wrap_content"></TextView>
</LinearLayout>
</LinearLayout>
代码说明：注意指定了每一个TextView的宽度为固定宽度，这样表格看起来就比较整齐。
蕾米莉亚酱
answered 12 years, 10 months ago