Android-GridView与ScrollView共用的冲突问题（类似ListView）

》由于ListView，GridView本身都继承于ScrollView，一旦在ScrollView中嵌套ScrollView，在ScrollView中嵌套使用ListView或者GridView，ListView只会显示一行多一点。两者进行嵌套，即会发生冲突。核心解决方案：重写ListView或者GridView的OnMesure方法。重写GridView方法，使其在绘制时重新计算GridView高度

---------------------

import android.content.Context;

import android.util.AttributeSet;

import android.widget.GridView;

/**

*

* @author 作者 ：desaco

*

* @version 创建时间：2016-1-22 上午9:43:33

*

*/

public class CustomGridView extends GridView{

public CustomGridView(Context context) {

super(context);

}

public CustomGridView(Context context, AttributeSet attrs) {

super(context, attrs);

}

public CustomGridView(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);

}

}

----------------------------------

public class MyGridView extends GridView {

private boolean haveScrollbar = true;

public MyGridView(Context context) {

super(context);

}

public MyGridView(Context context, AttributeSet attrs) {

super(context, attrs);

}

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

super(context, attrs, defStyle);

}

/**

* 设置是否有ScrollBar，当要在ScollView中显示时，应当设置为false。 默认为 true

*

* @param haveScrollbars

*/

public void setHaveScrollbar(boolean haveScrollbar) {

this.haveScrollbar = haveScrollbar;

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

if (haveScrollbars == false) {

int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);

super.onMeasure(widthMeasureSpec, expandSpec);

} else {

super.onMeasure(widthMeasureSpec, heightMeasureSpec);

}

}

}

------------------------

XML代码如下：

<cn.com.example.fang_com.beta_content.iwidgets.CustomGridView

android:id="@+id/common_show_workbenchs_gview"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:background="@color/white_color"

android:listSelector="#00000000"

android:numColumns="2"

android:horizontalSpacing="1dp"

android:verticalSpacing="1dp"

android:scrollbars="none" />

---------------------------------

import android.content.Context;

import android.util.AttributeSet;

import android.view.View.MeasureSpec;

import android.widget.ListView;

public class TestListView extends ListView{

public TestListView(Context context) {

super(context);

// TODO Auto-generated constructor stub

}

public TestListView(Context context, AttributeSet attrs) {

super(context, attrs);

// TODO Auto-generated constructor stub

}

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

super(context, attrs, defStyle);

// TODO Auto-generated constructor stub

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

// TODO Auto-generated method stub

int expandSpec = MeasureSpec.makeMeasureSpec(

Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);

super.onMeasure(widthMeasureSpec, expandSpec);

}

}