ListView(ScrollView)嵌套ListView、GridView显示不全，内容大于一行计算的高度不正确的解决办法

<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">相信很多人都遇到过ListView或是ScrollView嵌套ListView，ListView（ScrollView）嵌套GridView，内容只显示一行，这个问题网上已有解决办法。</span>

1、对于[b]ListView或是ScrollView嵌套ListView，一般是[/b]

利用Utility 类的静态方法setListViewHeightBasedOnChildren（）即可实现：

在listview.setAdapter()之后调用Utility.setListViewHeightBasedOnChilren(listview)就能正常显示了。

public class LvHeightUtil {
public static void setListViewHeightBasedOnChildren(ListView listView) {
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
return;
}
int totalHeight = 0;
for (int i = 0; i < listAdapter.getCount(); i++) {
View listItem = listAdapter.getView(i, null, listView);
listItem.measure(0, 0);
totalHeight += listItem.getMeasuredHeight();
}

ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1)) +10;
listView.setLayoutParams(params);
}

}

<span style="font-family:SimSun;"></span>

2、对于ListView或是ScrollView嵌套GridView，一般是：

<pre name="code" class="java">public class NoScrollGridView extends GridView {

public NoScrollGridView(Context context) {
super(context);
}

public NoScrollGridView(Context context, AttributeSet attrs) {
super(context, attrs);
}

public NoScrollGridView(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);
}

}

3、对于嵌套的ListView内容如果是TextView内容大于一行显示不全的，则ListView的高度就会计算错误，它只计算了一行的高度，对于TextView可重写它的onMeasure方法，计算高度后，再去重新set

public class ShareAppendixTextView extends TextView {
private Context context;

public ShareAppendixTextView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.context = context;
}

public ShareAppendixTextView(Context context, AttributeSet attrs) {
super(context, attrs);
this.context = context;
}

public ShareAppendixTextView(Context context) {
super(context);
this.context = context;
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
Layout layout = getLayout();
if (layout != null) {
int height = (int)Math.ceil(getMaxLineHeight(this.getText().toString()))
+ getCompoundPaddingTop() + getCompoundPaddingBottom();
int width = getMeasuredWidth();
setMeasuredDimension(width, height);
}
}

private float getMaxLineHeight(String str) {
float height = 0.0f;
float screenW = ((Activity)context).getWindowManager().getDefaultDisplay().getWidth();
float paddingLeft = ((LinearLayout)this.getParent()).getPaddingLeft();
float paddingReft = ((LinearLayout)this.getParent()).getPaddingRight();
//这里具体this.getPaint()要注意使用，要看你的TextView在什么位置，这个是拿TextView父控件的Padding的，为了更准确的算出换行
int line = (int) Math.ceil( (this.getPaint().measureText(str)/(screenW-paddingLeft-paddingReft)));
height = (this.getPaint().getFontMetrics().descent-this.getPaint().getFontMetrics().ascent)*line;
return height;
}
}

通过这样，ListView嵌套ListView，显示多行的问题就能得到解决，上一张解决的图片：