自定义布局具体方案代码
时间: 2023-08-06 14:27:17 浏览: 53
以下是一个简单的自定义布局方案的示例代码:
```
public class CustomLayout extends ViewGroup {
public CustomLayout(Context context) {
super(context);
}
public CustomLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int count = getChildCount();
int maxHeight = 0;
int maxWidth = 0;
for (int i = 0; i < count; i++) {
final View child = getChildAt(i);
measureChild(child, widthMeasureSpec, heightMeasureSpec);
maxWidth = Math.max(maxWidth, child.getMeasuredWidth());
maxHeight = Math.max(maxHeight, child.getMeasuredHeight());
}
maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth());
maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight());
setMeasuredDimension(resolveSize(maxWidth, widthMeasureSpec),
resolveSize(maxHeight, heightMeasureSpec));
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int count = getChildCount();
int left = 0;
int top = 0;
for (int i = 0; i < count; i++) {
final View child = getChildAt(i);
final int childWidth = child.getMeasuredWidth();
final int childHeight = child.getMeasuredHeight();
child.layout(left, top, left + childWidth, top + childHeight);
left += childWidth;
if (left >= getWidth()) {
left = 0;
top += childHeight;
}
}
}
}
```
以上代码实现了一个简单的自定义布局,它将子控件按顺序排列,超过容器宽度时换行。在 onMeasure 方法中,先测量子控件,然后计算出容器的最大宽度和高度。在 onLayout 方法中,将子控件按照宽度顺序排列,并在超过容器宽度时换行。
这只是一个简单的例子,具体的自定义布局方案需要根据实际需求进行设计和实现。