Google提供了自己的解决方案：FlowLayout类
package com.google.android.material.internal;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.MeasureSpec;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewGroup.MarginLayoutParams;
import androidx.annotation.RestrictTo;
import androidx.annotation.RestrictTo.Scope;
import androidx.core.view.MarginLayoutParamsCompat;
import androidx.core.view.ViewCompat;
import com.google.android.material.R.styleable;
@RestrictTo({Scope.LIBRARY_GROUP})
public class FlowLayout extends ViewGroup {
private int lineSpacing;
private int itemSpacing;
private boolean singleLine;
public FlowLayout(Context context) {
this(context, (AttributeSet)null);
}
public FlowLayout(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public FlowLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.singleLine = false;
this.loadFromAttributes(context, attrs);
}
@TargetApi(21)
public FlowLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
this.singleLine = false;
this.loadFromAttributes(context, attrs);
}
private void loadFromAttributes(Context context, AttributeSet attrs) {
TypedArray array = context.getTheme().obtainStyledAttributes(attrs, styleable.FlowLayout, 0, 0);
this.lineSpacing = array.getDimensionPixelSize(styleable.FlowLayout_lineSpacing, 0);
this.itemSpacing = array.getDimensionPixelSize(styleable.FlowLayout_itemSpacing, 0);
array.recycle();
}
protected int getLineSpacing() {
return this.lineSpacing;
}
protected void setLineSpacing(int lineSpacing) {
this.lineSpacing = lineSpacing;
}
protected int getItemSpacing() {
return this.itemSpacing;
}
protected void setItemSpacing(int itemSpacing) {
this.itemSpacing = itemSpacing;
}
protected boolean isSingleLine() {
return this.singleLine;
}
public void setSingleLine(boolean singleLine) {
this.singleLine = singleLine;
}
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = MeasureSpec.getSize(widthMeasureSpec);
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int height = MeasureSpec.getSize(heightMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int maxWidth = widthMode != -2147483648 && widthMode != 1073741824 ? 2147483647 : width;
int childLeft = this.getPaddingLeft();
int childTop = this.getPaddingTop();
int childBottom = childTop;
int maxChildRight = 0;
int maxRight = maxWidth - this.getPaddingRight();
int finalWidth;
for(finalWidth = 0; finalWidth < this.getChildCount(); ++finalWidth) {
View child = this.getChildAt(finalWidth);
if (child.getVisibility() != 8) {
this.measureChild(child, widthMeasureSpec, heightMeasureSpec);
LayoutParams lp = child.getLayoutParams();
int leftMargin = 0;
int rightMargin = 0;
if (lp instanceof MarginLayoutParams) {
MarginLayoutParams marginLp = (MarginLayoutParams)lp;
leftMargin += marginLp.leftMargin;
rightMargin += marginLp.rightMargin;
}
int childRight = childLeft + leftMargin + child.getMeasuredWidth();
if (childRight > maxRight && !this.isSingleLine()) {
childLeft = this.getPaddingLeft();
childTop = childBottom + this.lineSpacing;
}
childRight = childLeft + leftMargin + child.getMeasuredWidth();
childBottom = childTop + child.getMeasuredHeight();
if (childRight > maxChildRight) {
maxChildRight = childRight;
}
childLeft += leftMargin + rightMargin + child.getMeasuredWidth() + this.itemSpacing;
}
}
finalWidth = getMeasuredDimension(width, widthMode, maxChildRight);
int finalHeight = getMeasuredDimension(height, heightMode, childBottom);
this.setMeasuredDimension(finalWidth, finalHeight);
}
private static int getMeasuredDimension(int size, int mode, int childrenEdge) {
switch(mode) {
case -2147483648:
return Math.min(childrenEdge, size);
case 1073741824:
return size;
default:
return childrenEdge;
}
}
protected void onLayout(boolean sizeChanged, int left, int top, int right, int bottom) {
if (this.getChildCount() != 0) {
boolean isRtl = ViewCompat.getLayoutDirection(this) == 1;
int paddingStart = isRtl ? this.getPaddingRight() : this.getPaddingLeft();
int paddingEnd = isRtl ? this.getPaddingLeft() : this.getPaddingRight();
int childStart = paddingStart;
int childTop = this.getPaddingTop();
int childBottom = childTop;
int maxChildEnd = right - left - paddingEnd;
for(int i = 0; i < this.getChildCount(); ++i) {
View child = this.getChildAt(i);
if (child.getVisibility() != 8) {
LayoutParams lp = child.getLayoutParams();
int startMargin = 0;
int endMargin = 0;
if (lp instanceof MarginLayoutParams) {
MarginLayoutParams marginLp = (MarginLayoutParams)lp;
startMargin = MarginLayoutParamsCompat.getMarginStart(marginLp);
endMargin = MarginLayoutParamsCompat.getMarginEnd(marginLp);
}
int childEnd = childStart + startMargin + child.getMeasuredWidth();
if (!this.singleLine && childEnd > maxChildEnd) {
childStart = paddingStart;
childTop = childBottom + this.lineSpacing;
}
childEnd = childStart + startMargin + child.getMeasuredWidth();
childBottom = childTop + child.getMeasuredHeight();
if (isRtl) {
child.layout(maxChildEnd - childEnd, childTop, maxChildEnd - childStart - startMargin, childBottom);
} else {
child.layout(childStart + startMargin, childTop, childEnd, childBottom);
}
childStart += startMargin + endMargin + child.getMeasuredWidth() + this.itemSpacing;
}
}
}
}
}
该类的工作原理与上述FlowLayout类类似，但是您不应在项目中添加任何新类，并且与该类相比，设计器使用该类的效果更好
