import android.content.Context; import android.util.AttributeSet; import android.view.View; import android.widget.RadioGroup;/** * 流式布局的RadioGroup */ public class FlowRadioGroup extends RadioGroup {
public FlowRadioGroup(Context context) { super(context); } public FlowRadioGroup(Context context, AttributeSet attrs) { super(context, attrs); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int maxWidth = MeasureSpec.getSize(widthMeasureSpec); int childCount = getChildCount(); int x = 0; int y = 0; int row = 0; for (int index = 0; index < childCount; index++) { final View child = getChildAt(index); if (child.getVisibility() != View.GONE) { child.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); // 此处增加onlayout中的换行判断,用于计算所需的高度 int width = child.getMeasuredWidth(); int height = child.getMeasuredHeight(); x += width; y = row * height + height; if (x > maxWidth) { x = width; row++; y = row * height + height; } } } // 设置容器所需的宽度和高度 setMeasuredDimension(maxWidth, y); } @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { final int childCount = getChildCount(); int maxWidth = r - l; int x = 0; int y = 0; int row = 0; for (int i = 0; i < childCount; i++) { final View child = this.getChildAt(i); if (child.getVisibility() != View.GONE) { int width = child.getMeasuredWidth(); int height = child.getMeasuredHeight(); x += width; y = row * height + height; if (x > maxWidth) { x = width; row++; y = row * height + height; } child.layout(x - width, y - height, x, y); } } } } 在使用RadioGroup控件时将RadioGroup改为 包名.FlowRadioGroup 就可以了
import android.util.AttributeSet;
import android.view.View;
import android.widget.RadioGroup;/**
* 流式布局的RadioGroup
*/
public class FlowRadioGroup extends RadioGroup {
public FlowRadioGroup(Context context) {
super(context);
} public FlowRadioGroup(Context context, AttributeSet attrs) {
super(context, attrs);
} @Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int maxWidth = MeasureSpec.getSize(widthMeasureSpec);
int childCount = getChildCount();
int x = 0;
int y = 0;
int row = 0; for (int index = 0; index < childCount; index++) {
final View child = getChildAt(index);
if (child.getVisibility() != View.GONE) {
child.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
// 此处增加onlayout中的换行判断,用于计算所需的高度
int width = child.getMeasuredWidth();
int height = child.getMeasuredHeight();
x += width;
y = row * height + height;
if (x > maxWidth) {
x = width;
row++;
y = row * height + height;
}
}
}
// 设置容器所需的宽度和高度
setMeasuredDimension(maxWidth, y);
} @Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
final int childCount = getChildCount();
int maxWidth = r - l;
int x = 0;
int y = 0;
int row = 0;
for (int i = 0; i < childCount; i++) {
final View child = this.getChildAt(i);
if (child.getVisibility() != View.GONE) {
int width = child.getMeasuredWidth();
int height = child.getMeasuredHeight();
x += width;
y = row * height + height;
if (x > maxWidth) {
x = width;
row++;
y = row * height + height;
}
child.layout(x - width, y - height, x, y);
}
}
}
}
在使用RadioGroup控件时将RadioGroup改为 包名.FlowRadioGroup 就可以了