android 矩形布局

在开发中可能你需要一个2*2，或者3*3，N*N的布局，但是又不会涉及到滑动，此时可以自定义一个不需要滑动的网格布局。
public class UserTopicGridView extends RelativeLayout{
private Context mContext;
private Activity mActivity;
private String title;
private TApplication mTApplication;
private int columnLine = 2;
private int childWidth = 100;
private int childHeight = 100;
private int horSpace = 10;
private int verSpace = 10;
public UserTopicGridView(Context context, AttributeSet attrs) {
super(context, attrs);
this.mContext = context;
mActivity = (Activity) this.mContext;
mTApplication = (TApplication) mActivity.getApplication();
}

public void setTitle(String title) {    this.title = title;}public void setChildSize(int width ,int height) {    this.childWidth = width;    this.childHeight = height;    requestLayout();}public void setPadding(int horSpace, int verSpace) {    this.horSpace = horSpace;    this.verSpace = verSpace;    requestLayout();}public void initViews(final HomeListBean homeListBean) {    List <Object> list = homeListBean.items;    for(int i = 0; i < list.size(); i++) {        ImageView imageView = new ImageView(mContext);        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(childWidth, childHeight);        imageView.setLayoutParams(params);        imageView.setScaleType(ScaleType.FIT_XY);        ImageLoader.getInstance().displayImage((String)list.get(i), imageView, mTApplication.getOptions());        imageView.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                //do something            }        });        addView(imageView);    }}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {    int count = getChildCount();    for (int i = 0; i < count; i++) {        int childWidthMeasureSpec = MeasureSpec                .makeMeasureSpec(childWidth, MeasureSpec.EXACTLY);        int childheightMeasureSpec = MeasureSpec                .makeMeasureSpec(childHeight, MeasureSpec.EXACTLY);        View child = getChildAt(i);        child.measure(childWidthMeasureSpec, childheightMeasureSpec);    }    int newParentWidth = childWidth * columnLine + horSpace * (columnLine - 1);    int newParentHeight = childHeight * getLine() + verSpace * (getLine() - 1);    setMeasuredDimension(newParentWidth, newParentHeight);}@Overrideprotected void onLayout(boolean changed, int l, int t, int r, int b) {    int childCount = getChildCount();    int left = 0;    int top = 0;    for(int i = 0; i < childCount; i++) {        if(isNewLine(i)) {            top += childHeight + verSpace;            left = 0;        }        View view = getChildAt(i);        view.layout(left, top, left + childWidth, childHeight + top);        left += childWidth + horSpace;    }}private boolean isNewLine(int index) {    if(index !=0 && index % columnLine == 0) {        return true;    }    return false;}private int getLine() {    int line = 0;    line = getChildCount() / 2;    if(getChildCount() % columnLine != 0) {        line += 1;    }    return line;}

}

第一篇博客，略显粗糙，没有注释，但是相信大家都会懂，晚安。