1，自定义flowlayout代码

package com.hyang.administrator.studentproject.widget;import android.content.Context;import android.util.AttributeSet;import android.util.Log;import android.view.View;import android.view.ViewGroup;import java.util.ArrayList;import java.util.List;/** * Created by Administrator on 2017/6/20. */public class FlowGroupView extends ViewGroup {    /**     * 储存所有的view 按行记录     */    private List
     
      
       > mAllViews = new ArrayList
       
        
         >();    /**     * 记录每一行的高度     */    private List
         
           mLineHeight = new ArrayList
          
           (); private String TAG = "TAG"; public FlowGroupView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } public FlowGroupView(Context context, AttributeSet attrs) { super(context, attrs); } public FlowGroupView(Context context) { super(context); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { // 置空 view 容器 和 lineHeight 容器 重新赋值 //因为OnMeasure方法会走两次，第一次是实例化这个对象的时候高度和宽度都是0 //之后走了OnSizeChange()方法后 又走了一次OnMeasure，所以要把第一次加进去的数据清空。 mAllViews.clear(); mLineHeight.clear(); //得到上级容器为其推荐的宽高和计算模式 int specWidthMode = MeasureSpec.getMode(widthMeasureSpec); int specHeighMode = MeasureSpec.getMode(heightMeasureSpec); int specWidthSize = MeasureSpec.getSize(widthMeasureSpec); int specHeighSize = MeasureSpec.getSize(heightMeasureSpec); // 计算出所有的 child 的 宽和高// measureChildren(specWidthSize, specHeighSize); // 记录如果是 warp_content 是设置的宽和高 int width = 0; int height = 0; // 得到子view的个数 int cCount = getChildCount(); /** * 记录每一行的宽度，width不断取最大宽度 */ int lineWidth = 0; /** * 每一行的高度，累加至height */ int lineHeight = 0; // 存储每一行所有的childView List
           
             lineViews = new ArrayList
            
             (); for (int i = 0; i < cCount; i++) { // 得到每个子View View child = getChildAt(i); // 测量每个子View的宽高 measureChild(child, widthMeasureSpec, heightMeasureSpec); // 当前子view的lp MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams(); // 子view的宽和高 int cWidth = 0; int cheight = 0; // 当前子 view 实际占的宽 cWidth = child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin; // 当前子View 实际占的高 cheight = child.getMeasuredHeight() + lp.topMargin + lp.bottomMargin; lineHeight=cheight; // 需要换行 if(lineWidth + cWidth > specWidthSize){ width = Math.max(lineWidth, cWidth);// 取最大值 lineWidth = cWidth; // 开启新行的时候重新累加width // 开启新行时累加 height// lineHeight = cheight; // 记录下一行的高度 mAllViews.add(lineViews); mLineHeight.add(cheight); lineViews = new ArrayList<>(); // 换行的时候把该 view 放进 集合里 lineViews.add(child);// 这个 view(child) 是下一行的第一个view height += cheight; //每个View高度是一样的，直接累加 Log.e("需要换行", "hight--" + height); Log.e("onMeasure", "AllViews.size() -- > " + mAllViews.size()); }else { // 不需要换行 lineWidth += cWidth;// Log.e("不需要换行","hight--"+height); // 不需要换行时 把子View add 进集合 lineViews.add(child); } if(i == cCount-1){ // 如果是最后一个view width = Math.max(lineWidth, cWidth); height += cheight; Log.e("最后一个view","hight--"+height); } } // 循环结束后 把最后一行内容add进集合中 mLineHeight.add(lineHeight); // 记录最后一行 mAllViews.add(lineViews); // MeasureSpec.EXACTLY 表示设置了精确的值 // 如果 mode 是 MeasureSpec.EXACTLY 时候，则不是 warp_content 用计算来的值，否则则用上级布局分给它的值 setMeasuredDimension( specWidthMode == MeasureSpec.EXACTLY ? specWidthSize : width, specHeighMode == MeasureSpec.EXACTLY ? specHeighSize : height ); Log.e("onMeasure", "mAllViews.size() -- > " + mAllViews.size() + " mLineHeight.size() -- > " + mLineHeight.size() + "Height -- > "+height); } /** * 所有childView的位置的布局 */ @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { // 当前行的最大高度 int lineHeight = 0; // 存储每一行所有的childView List
             
               lineViews = new ArrayList
              
               (); int left = 0; int top = 0; // 得到总行数 int lineNums = mAllViews.size(); for (int i = 0; i < lineNums; i++) { // 每一行的所有的views lineViews = mAllViews.get(i); // 当前行的最大高度 lineHeight = mLineHeight.get(i); Log.e("onLayout" , "第" + i + "行 ：" + lineViews.size()+"-------lineHeight"+ lineHeight); // 遍历当前行所有的View for (int j = 0; j < lineViews.size(); j++) { View child = lineViews.get(j); if (child.getVisibility() == View.GONE) { continue; } MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams(); //计算childView的left,top,right,bottom int lc = left + lp.leftMargin; int tc = top + lp.topMargin; int rc =lc + child.getMeasuredWidth(); int bc = tc + child.getMeasuredHeight(); child.layout(lc, tc, rc, bc); left += child.getMeasuredWidth() + lp.rightMargin + lp.leftMargin; } left = 0; top += lineHeight; } Log.v("onLayout", "onLayout mAllViews.size() -- > " + mAllViews.size() + " mLineHeight.size() -- > "+ mLineHeight.size()); } /** * 这个一定要设置，否则会包强转错误 * 设置它支持 marginLayoutParams */ @Override public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) { return new MarginLayoutParams(getContext(),attrs); }}
              
             
            
           
          
         
        
       
      
     

2.在布局文件中使用

1 
     
      5 
     

3.TextView的样式文件

4.在Activity中使用

1 package com.hyang.administrator.studentproject.activity; 2  3 import android.graphics.Color; 4 import android.os.Bundle; 5 import android.support.v7.app.AppCompatActivity; 6 import android.view.View; 7 import android.view.ViewGroup; 8 import android.widget.Button; 9 import android.widget.TextView;10 import android.widget.Toast;11 12 import com.hyang.administrator.studentproject.R;13 import com.hyang.administrator.studentproject.widget.FlowGroupView;14 15 import org.xutils.view.annotation.ViewInject;16 import org.xutils.x;17 18 import java.util.ArrayList;19 20 public class FlowLayoutActivity extends AppCompatActivity {21 22     @ViewInject(R.id.flow_button)23     private Button addTextButton;24     @ViewInject(R.id.flow_view_group)25     private FlowGroupView flowView;26 27     private ArrayList
     
       names;28 29 30     @Override31     protected void onCreate(Bundle savedInstanceState) {32         super.onCreate(savedInstanceState);33         setContentView(R.layout.activity_flow_layout);34         x.view().inject(this);35 36         setTwoFlowLayout();37 38         addTextButton.setOnClickListener(new View.OnClickListener() {39             @Override40             public void onClick(View v) {41                 addTextView("添加1");42             }43         });44     }45 46     private void setTwoFlowLayout() {47         //添加数据48         names = new ArrayList
      
       ();49         names.add("降龙十八掌");50         names.add("黯然销魂掌");51         names.add("左右互搏术");52         names.add("七十二路空明拳");53         names.add("小无相功");54         names.add("拈花指");55         names.add("打狗棍法");56         names.add("蛤蟆功");57         names.add("九阴白骨爪");58         names.add("一招半式闯江湖");59         names.add("醉拳");60         names.add("龙蛇虎豹");61         names.add("葵花宝典");62         names.add("吸星大法");63         names.add("如来神掌警示牌");64         //为布局添加内容65         for (int i = 0; i < names.size(); i++) {66             addTextView(names.get(i));67         }68     }69 70     /**71      * 动态添加布局72      * @param str73      */74     private void addTextView(String str) {75         TextView child = new TextView(this);76         ViewGroup.MarginLayoutParams params = new ViewGroup.MarginLayoutParams(ViewGroup.MarginLayoutParams.WRAP_CONTENT, ViewGroup.MarginLayoutParams.WRAP_CONTENT);77         params.setMargins(5, 5, 5, 5);78         child.setLayoutParams(params);79         child.setBackgroundResource(R.drawable.flag);80         child.setText(str);81         child.setTextColor(Color.WHITE);82         initEvents(child);//监听83         flowView.addView(child);84     }85 86     /**87      * 为每个view 添加点击事件88      */89     private void initEvents(final TextView tv){90         tv.setOnClickListener(new View.OnClickListener() {91 92             @Override93             public void onClick(View v) {94                 Toast.makeText(FlowLayoutActivity.this, tv.getText().toString(), Toast.LENGTH_SHORT).show();95             }96         });97     }98 }