Android中ScrollView嵌套ListView_android scrollview嵌套listview

参考网址：https://blog.csdn.net/wanghao200906/article/details/51084975

1.ScrollView嵌套ListView（listView所有条目展示出来，并且不能滑动了）

package com.view;
 
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ListView;
 
public class ListViewForScrollView extends ListView {
    public ListViewForScrollView(Context context) {
        super(context);
    }
    public ListViewForScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public ListViewForScrollView(Context context, AttributeSet attrs,
                                 int defStyle) {
        super(context, attrs, defStyle);
    }
    @Override
    /**
     * 重写该方法，达到使ListView适应ScrollView的效果
     */
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
                MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
    }
 
//    @Override
//    public boolean dispatchTouchEvent(MotionEvent ev) {
//        getParent().requestDisallowInterceptTouchEvent(true);
//        return super.dispatchTouchEvent(ev);
//    }
}

2.ScrollView嵌套ListView（ListView可以指定高度，嵌套后ListView还可以进行滑动，焦点的分发）

package com.view;
 
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.ListView;
 
 
public class MyListView extends ListView {
 
    private static final String TAG = "MyListView";
    public MyListView(Context context) {
        this(context, null);
    }
 
    public MyListView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }
 
    public MyListView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }
 
 
    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 
        int defaultsize=measureHight(Integer.MAX_VALUE >> 2, heightMeasureSpec);
        int expandSpec = MeasureSpec.makeMeasureSpec(defaultsize, MeasureSpec.AT_MOST);
 
        super.onMeasure(widthMeasureSpec, expandSpec);
    }
 
 
    private int measureHight(int size, int measureSpec) {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);
        if (specMode == MeasureSpec.EXACTLY) {
            Log.i(TAG, "exactly" );
 
            result = specSize;
        } else {
 
            result = size;//最小值是200px ，自己设定
            if (specMode == MeasureSpec.AT_MOST) {
                result = Math.min(result, specSize);
            }
            Log.i(TAG, "specMode:"+specMode+"--result:"+result );
        }
        return result;
    }
 
 
    /**
     * 改listview滑到底端了
     *
     * @return
     */
    public boolean isBottom() {
        int firstVisibleItem = getFirstVisiblePosition();//屏幕上显示的第一条是list中的第几条
        int childcount = getChildCount();//屏幕上显示多少条item
        int totalItemCount = getCount();//一共有多少条
        if ((firstVisibleItem + childcount) >=totalItemCount) {
            return true;
        }
        return false;
    }
 
    /**
     * 改listview在顶端
     *
     * @return
     */
    public boolean isTop() {
        int firstVisibleItem = getFirstVisiblePosition();
        if (firstVisibleItem ==0) {
            return true;
        }
        return false;
    }
 
    float down = 0;
    float y;
 
    @Override
    public boolean dispatchTouchEvent(MotionEvent event) {
 
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                down = event.getRawY();
 
                getParent().requestDisallowInterceptTouchEvent(true);
                break;
            case MotionEvent.ACTION_MOVE:
                y = event.getRawY();
                if (isTop()) {
                    if (y - down > 1) {
//                        到顶端,向下滑动 把事件教给父类
                        getParent().requestDisallowInterceptTouchEvent(false);
                    } else {
                        //                        到顶端,向上滑动 把事件拦截 由自己处理
                        getParent().requestDisallowInterceptTouchEvent(true);
                    }
                }
 
                if (isBottom()) {
                    if (y - down > 1) {
//                        到底端,向下滑动 把事件拦截 由自己处理
                        getParent().requestDisallowInterceptTouchEvent(true);
                    } else {
//                        到底端,向上滑动 把事件教给父类
                        getParent().requestDisallowInterceptTouchEvent(false);
                    }
                }
                break;
            default:
                break;
        }
 
        return super.dispatchTouchEvent(event);
    }
}
 

禁止ListView条目点击（在Adapter中重写以下方法）

@Override    
public boolean isEnabled(int position) {     
   return false;     
}