android_studio自定义FlowLayout流式布局

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* FlowLayout*
package com.bawei.lss_flowlayout;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;

public class FlowLayout extends ViewGroup {
public FlowLayout(Context context) {

    this(context,null);
}

public FlowLayout(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public FlowLayout(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    measureChildren(widthMeasureSpec,heightMeasureSpec);


}

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    int width=getWidth();
    int height=getHeight();
    int tw=0;
    int th=0;
    for(int i=0;i

}
activity_main