android scrollview listview显示不全

时间：2021-10-13 08:12:01

原来处理方法是重写ListView

import android.content.Context;

import android.util.AttributeSet;

import android.view.MotionEvent;

import android.widget.ListView;

public class MyListView extends ListView {

    public MyListView(Context context) {

        super(context);

        // TODO Auto-generated constructor stub

    }

    public MyListView(Context context, AttributeSet attrs) {

        super(context, attrs);

    }  

    public MyListView(Context context, AttributeSet attrs, int defStyle) {

        super(context, attrs, defStyle);

    }  

    @Override

    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) {

        if(ev.getAction() == MotionEvent.ACTION_MOVE){

            return true;

        }

        return super.dispatchTouchEvent(ev);

    }

}

试了这种方法还是显示不全 总是少二项内容

又使用了

public static void setListViewHeightBasedOnChildren(ListView listView) {

        // 获取ListView对应的Adapter

        ListAdapter listAdapter = listView.getAdapter();

        if (listAdapter == null) {

            return;

        }

        int totalHeight = 0;

        for (int i = 0, len = listAdapter.getCount(); i < len; i++) { // listAdapter.getCount()返回数据项的数目

            View listItem = listAdapter.getView(i, null, listView);

            listItem.measure(0, 0); // 计算子项View 的宽高

            totalHeight += listItem.getMeasuredHeight(); // 统计所有子项的总高度

        }

        ViewGroup.LayoutParams params = listView.getLayoutParams();

        params.height = totalHeight

                + (listView.getDividerHeight() * (listAdapter.getCount() - 1));

        // listView.getDividerHeight()获取子项间分隔符占用的高度

        // params.height最后得到整个ListView完整显示需要的高度

        listView.setLayoutParams(params);

    }

还是一样效果 少二项内容

最后在网上找到有人重写LinearLayout显示列表

import android.content.Context;

import android.util.AttributeSet;

import android.util.Log;

import android.util.TypedValue;

import android.view.View;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.BaseAdapter;

import android.widget.LinearLayout;

/***

 *

 * @author FreePC

 *

 */

public class LinearLayoutForListView extends LinearLayout

{

    private BaseAdapter adapter;

    private OnItemClickListener onItemClickListener;

    /**

     * 通过 Java代码  实例化

     * @param context

     */

    public LinearLayoutForListView(Context context)

    {

        super(context);

        //设置LinearLayoutForListView为垂直布局，否者默认为水平布局，容易疏忽导致子项显示不全

        LinearLayoutForListView.this.setOrientation(LinearLayout.VERTICAL);

    }

    /**

     * 此构造函数可以允许我们通过 XML的方式注册 控件

     * @param context

     * @param attrs

     */

    public LinearLayoutForListView(Context context, AttributeSet attrs)

    {

        super(context, attrs);

        LinearLayoutForListView.this.setOrientation(LinearLayout.VERTICAL);

    }

    /**

     * 设置适配器

     *

     * @param adpater

     */

    public void setAdapter(BaseAdapter adpater)

    {

        this.adapter = adpater;

        bindLinearLayout();

    }

    /**

     * 获取适配器Adapter

     *

     * @return adapter

     */

    public BaseAdapter getAdpater()

    {

        return adapter;

    }

    /**

     * 绑定布局:将每个子项的视图view添加进此线性布局LinearLayout中

     */

    public void bindLinearLayout()

    {

        int count = adapter.getCount();

        for (int i = 0; i < count; i++)

        {

            View v = adapter.getView(i, null, null);

            if (i != count - 1)

            {    //添加每项item之间的分割线

                 v = addLine(v);

            }

            addView(v, i);

        }

        setItemClickListener();

        Log.v("countTAG", "" + count);

    }

    /**

     * 添加每项item之间的分割线

     *

     * @param view

     * @return

     */

    public View addLine(View view)

    {

        //分割线view

        View lineView = new View(view.getContext());

        // 将数据从dip(即dp)转换到px，第一参数为数据原单位（此为DIP），第二参数为要转换的数据值

        float fPx = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,

                (float) 0.5, view.getResources().getDisplayMetrics());

        int iPx = Math.round(fPx);

        LayoutParams layoutParams = new LayoutParams(

                LinearLayout.LayoutParams.MATCH_PARENT, iPx);

        lineView.setLayoutParams(layoutParams);

        lineView.setBackgroundColor(view.getSolidColor());

        LinearLayout ly = new LinearLayout(view.getContext());

        ly.setOrientation(LinearLayout.VERTICAL);

        ly.addView(view);

        ly.addView(lineView);

        return ly;

    }

    /**

     * 设置点击子项事件监听对象

     * @param onItemClickListener

     */

    public void setOnItemClickListener(OnItemClickListener onItemClickListener)

    {

        this.onItemClickListener = onItemClickListener;

        setItemClickListener();

    }

    /**

     * 获取点击子项事件监听对象

     * @return

     */

    public OnItemClickListener getOnItemClickListener()

    {

        return onItemClickListen

这种方法完全可以搞定，在原来开发当中 上面二个方法都可以搞定不知道这次为什么不行

我怀疑是布局问题

 <ScrollView

        android:id="@id/myscrollview"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:background="@color/v_common_line_color"

        android:orientation="vertical"

        android:scrollbars="none" >

        <RelativeLayout

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_marginBottom="8.0dip"

            android:orientation="vertical" >

            <FrameLayout

                android:id="@id/frame_layout"

                android:layout_width="match_parent"

                android:layout_height="wrap_content" >

                <ImageView

                    android:layout_width="match_parent"

                    android:layout_height="200.0dip"

                    android:background="@drawable/home_cover2"

                    android:scaleType="centerCrop" />

                <RelativeLayout

                    android:layout_width="match_parent"

                    android:layout_height="wrap_content"

                    android:layout_gravity="bottom|left"

                    android:layout_marginBottom="8.0dip"

                    android:layout_marginLeft="16.0dip" >

                    <TextView

                        android:id="@id/txt_city"

                        android:layout_width="wrap_content"

                        android:layout_height="wrap_content"

                        android:textColor="@color/white"

                        android:textSize="@dimen/font18" />

                    <TextView

                        android:id="@id/txt_weather"

                        android:layout_width="wrap_content"

                        android:layout_height="wrap_content"

                        android:layout_below="@id/txt_city"

                        android:layout_gravity="bottom|left"

                        android:textColor="@color/white"

                        android:textSize="@dimen/font18" />

                </RelativeLayout>

            </FrameLayout>

            <LinearLayout

                android:id="@id/linear_title"

                android:layout_width="match_parent"

                android:layout_height="wrap_content"

                android:layout_below="@id/frame_layout"

                android:layout_marginTop="8.0dp"

                android:background="@drawable/layout_background_corners"

                android:orientation="vertical"

                android:padding="8.0dip" >

                <TextView

                    android:id="@id/txtTitle"

                    android:layout_width="match_parent"

                    android:layout_height="wrap_content"

                    android:gravity="center_vertical"

                    android:textColor="@color/black2"

                    android:textSize="@dimen/font16" />

            </LinearLayout>

            <ListView

                android:id="@id/liv_trip"

                android:layout_width="match_parent"

                android:layout_height="wrap_content"

                android:layout_below="@id/linear_title"

                android:layout_marginBottom="8.0dip"

                android:layout_marginTop="8.0dip"

                android:divider="@color/cccccc"

                android:dividerHeight="0px"

                android:fadingEdge="none" />

        </RelativeLayout>

    </ScrollView>

item布局是

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

        android:background="@color/v_common_line_color">

</LinearLayout>

相关文章