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自定义GroupView：

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

public class MyGropView extends ViewGroup{
    private final static int VIEW_MARGIN=15;

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

     public MyGropView(Context context) {
         super(context);
     }
     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int stages = 1;
        int stageHeight = 0;
        int stageWidth = 0;

        int wholeWidth = MeasureSpec.getSize(widthMeasureSpec);

        for (int i = 0; i < getChildCount(); i++) {
            final View child = getChildAt(i);
            // measure
            measureChild(child, widthMeasureSpec, heightMeasureSpec);
            stageWidth += (child.getMeasuredWidth() + VIEW_MARGIN);
            stageHeight = child.getMeasuredHeight();
            if (stageWidth >= wholeWidth) {
                stages++;
                //reset stageWidth
                stageWidth = child.getMeasuredWidth();
            }


        }



        int wholeHeight = (stageHeight + VIEW_MARGIN) * stages;

        // report this final dimension
        setMeasuredDimension(resolveSize(wholeWidth, widthMeasureSpec),
                resolveSize(wholeHeight, heightMeasureSpec));
     }
     private int jiange = 10;//按钮之间的间隔
     @Override
     protected void onLayout(boolean arg0, int arg1, int arg2, int arg3, int arg4) {

        final int count = getChildCount();
         int row=0;// which row lay you view relative to parent
         int lengthX=arg1 ;    // right position of child relative to parent
         int lengthY=arg2;    // bottom position of child relative to parent
         for(int i=0;i<count;i++){

             final View child = this.getChildAt(i);
             int width = child.getMeasuredWidth();
             int height = child.getMeasuredHeight();
             if(i == 0){
                 lengthX+=width+VIEW_MARGIN;//第一个的时候不需要加
             }else{
                 lengthX+=width+VIEW_MARGIN +jiange;//按钮之间的间隔
             }

             lengthY=row*(height+VIEW_MARGIN)+VIEW_MARGIN+height+arg2;
             //if it can't drawing on a same line , skip to next line
             if(lengthX>arg3){
                 lengthX=width+VIEW_MARGIN+arg1;
                 row++;
                 lengthY=row*(height+VIEW_MARGIN)+VIEW_MARGIN+height+arg2;
             }
             child.layout(lengthX-width, lengthY-height, lengthX, lengthY);
         }

     }

}

然后将此控件加入布局中，在主函数中动态添加控件。

public class MainActivity extends AppCompatActivity {

    private MyGropView myGroupView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myGroupView = ((MyGropView) findViewById(R.id.myGroupView));
        for (int i=0;i<30;i++){
            Button b=new Button(this);
            b.setText("测试"+i);
        myGroupView.addView(b);
        }
    }
}