仿Android GridView以解决ScrollView中嵌套自带GridView滚动条冲突问题

有时候做Android开发难免会遇到ScrollView中嵌套GridView现象，一旦要他们结合使用就会出现一堆问题，这里考虑使用LinearLayout仿GridView去解决一下这个问题！

1.首先配置attrs.xml文件

<declare-styleable name="GridLinearLayout">        <attr name="verticalSpace" format="dimension"/>        <attr name="horizontalSpace" format="dimension"/>        <attr name="rows" format="integer"/>        <attr name="columns" format="integer"/></declare-styleable>

2.自定义GridLinearLayout 文件

/** * 一个没有滚动条的LinearLayout，但是却很像GridView。 * 实际上，就是为了解决当GridView被包含在一个SrcollView中而却拥有两个滚动条相互排斥而做。 */public class GridLinearLayout extends LinearLayout{/**仿GridView单元格适配器*/private BaseAdapter adapter;/**仿GridView列数*/private int columns=1;/**仿GridView行数*/private int rows=1;/**仿GridView填充的单元格总数*/private int count;/**仿GridView单元格单击事件*/private OnCellClickListener onCellClickListener;/**布局水平分割线宽度*/private int horizontalSpace =1;/**布局垂直分割线宽度*/private int verticalSpace =1;/** * 仿GridView构造方法 * @param context */public GridLinearLayout(Context context) {super(context);}/** * 仿GridV构造方法 * @param context * @param attrs */public GridLinearLayout(Context context, AttributeSet attrs) {super(context, attrs);initAttrs(context, attrs);}/*** * 加载xml文件设置的属性值 * @param context * @param attrs */private void initAttrs(Context context ,AttributeSet attrs){TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.GridLinearLayout);columns = typedArray.getInteger(R.styleable.GridLinearLayout_columns, 1);rows = typedArray.getInteger(R.styleable.GridLinearLayout_rows, 1);horizontalSpace = typedArray.getDimensionPixelSize(R.styleable.GridLinearLayout_horizontalSpace, 0);verticalSpace = typedArray.getDimensionPixelSize(R.styleable.GridLinearLayout_verticalSpace, 0);typedArray.recycle();}/** * 构造水平显示LinearLayout用于填充cell * @return */private LinearLayout rowLinearLayout(){LinearLayout itemLinearLayout = new LinearLayout(getContext());itemLinearLayout.setOrientation(LinearLayout.HORIZONTAL);itemLinearLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));itemLinearLayout.setGravity(Gravity.LEFT);return itemLinearLayout;}/** * 仿GridView将适配器单元格绑定到当前LinearLayout中 * @return */public void bindLinearLayout() {removeAllViews();rows = getSpecialRows(true);if(rows==-1){return;}for(int r=0;r<rows;r++){LinearLayout itemRow = rowLinearLayout();for(int c=0;c<columns;c++){final int index = r*columns+c;View cellView = adapter.getView(index, null, null);cellView.setLayoutParams(cellLayoutParams(index));if(index<count||index==(count-1)){itemRow.addView(cellView,c);cellView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {if(onCellClickListener!=null){onCellClickListener.onCellClick(index);}}});if(index==(count-1)){addView(itemRow, r);return;}}else{return;}}addView(itemRow, r);}}/** * 获取屏幕宽度用于均分一行LinearLayout各个Cell * @return */@SuppressWarnings("deprecation")private int screenWidth(){/*Point outSize = new Point();WindowManager windowManager = (WindowManager) getContext().getSystemService(Service.WINDOW_SERVICE);Display display = windowManager.getDefaultDisplay();display.getSize(outSize);return outSize.x;*/int screenWidth;WindowManager windowManager = (WindowManager) getContext().getSystemService(Service.WINDOW_SERVICE);Display display = windowManager.getDefaultDisplay();screenWidth = display.getWidth();return screenWidth;}/** * 设置当前单元格边距， * 每一行第一个左边距为0底边距为horizontalSpace， * 其他单元格左边距为verticalSpace底边距为horizontalSpace * @param index 单元格序数 * @return */private LayoutParams cellLayoutParams(int index){LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(cellWidth(),LayoutParams.WRAP_CONTENT);if(index%columns==0){params.setMargins(0, 0, 0, horizontalSpace);return params;}else{params.setMargins(verticalSpace, 0, 0, horizontalSpace);return params;}}/*** * 计算单元格宽度 * @return */private int cellWidth(){int cellScreenWidth = screenWidth()-(columns-1)*verticalSpace;return cellScreenWidth/columns;}/*** * 是否按列的倍数返回行数 * @param isSpecial TRUE:返回列的倍数行数，FALSE:有多少行显示多少行 * @return 返回-1时表示列数为0 */private int getSpecialRows(boolean isSpecial){try {if(isSpecial){return count/columns;}else{return (int) Math.ceil((double)count/columns);}} catch (Exception e) {e.printStackTrace();return -1;}}/*** * 返回该控件的适配器 * @return */public BaseAdapter getAdapter() {return adapter;}/** * 设置该控件的适配器 * @param adapter 自定义适配器 */public void setAdapter(BaseAdapter adapter) {this.adapter = adapter;this.count = adapter.getCount();}/** * 返回该控件的列数 * @return */public int getColumns() {return columns;}/** * 设置该控件的列数 * @param columns 列数 */public void setColumns(int columns) {this.columns = columns;}/** * 返回该控件的行数 * @return */public int getRows() {return rows;}/** * 设置该控件的行数 * @param rows 行数 */public void setRows(int rows) {this.rows = rows;}/** * 返回该控件各单元格水平间距 * @return */public int getHorizontalSpace() {return horizontalSpace;}/** * 设置该控件各单元格水平间距 * @param horizontalSpace 间距 */public void setHorizontalSpace(int horizontalSpace) {this.horizontalSpace = horizontalSpace;}/** * 返回该控件各单元格垂直间距 * @return */public int getVerticalSpace() {return verticalSpace;}/** * 设置该控件各单元格垂直间距 * @param verticalSpace 间距 */public void setVerticalSpace(int verticalSpace) {this.verticalSpace = verticalSpace;}public interface OnCellClickListener{public void onCellClick(int index);}/** * 监听响应单元格单击事件 * @param onCellClickListener 单元格单击事件接口 */public void setOnCellClickListener(OnCellClickListener onCellClickListener){this.onCellClickListener = onCellClickListener;}}

3.使用方式如下

//获取控件glFriendRecommendTask = (GridLinearLayout) view.findViewById(R.id.glFriendRecommendTask);//设置控件适配器，适配器按正常方式定义即可glFriendRecommendTask.setAdapter(friendRecommendTaskAdapter);//如果需要监听适配器中的单击事件可在此处触发

glFriendRecommendTask.setOnCellClickListener(new OnCellClickListener() {@Overridepublic void onCellClick(int index) {}});//设置该控件显示的列数

glFriendRecommendTask.setColumns(3);//最后调用绑定方法即可

glFriendRecommendTask.bindLinearLayout();