Android custom view streaming layout wraps lines according to the number of text

package ;

import .;
import ;
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import ;

import ;
import ;

public class MainActivity extends AppCompatActivity {
 List<String> stringList = new ArrayList<>();
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  (savedInstanceState);
  setContentView(.activity_main);
  initView();
 }

 private void initView() {
  final EditText editText = findViewById();
  final CustomWaterFallViewGroup customWaterFallViewGroup = findViewById(.water_fill);
  findViewById().setOnClickListener(new () {
   @Override
   public void onClick(View v) {
    //Get the value of the input box    String str = ().toString();
    //Put text into the list    (str);
    //Set data    (stringList);
   }
  });
 }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:andro
 xmlns:app="/apk/res-auto"
 xmlns:tools="/tools"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="vertical"
 tools:context=".MainActivity">

 <EditText
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:
  android:hint="enter"
  />
 <Button
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:
  android:text="add"
  />
 <
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:
  />
</LinearLayout>

package ;

import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;

import ;
import ;

public class CustomWaterFallViewGroup extends LinearLayout {
 //Set the maximum length of the string for each line int mMaxSize = 22;
 //Passed in string array List<String> stringList = new ArrayList<>();
 Context mcontext;

 public CustomWaterFallViewGroup(Context context) {
  super(context);
  mcontext = context;
  init();
 }

 public CustomWaterFallViewGroup(Context context,AttributeSet attrs) {
  super(context, attrs);
  mcontext = context;
  init();
 }
 //Define the layout private void init() {
  //Set the outermost LinearLayout as a vertical layout  setOrientation(VERTICAL);
 }

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
  (widthMeasureSpec, heightMeasureSpec);
  DisplayMetrics displayMetrics = ().getDisplayMetrics();
  int widthPixels = ;
  setMeasuredDimension(widthPixels,heightMeasureSpec);
 }

 @Override
 protected void onLayout(boolean changed, int l, int t, int r, int b) {
  (changed, l, t, r, b);
 }

 @Override
 protected void onDraw(Canvas canvas) {
  (canvas);
 }

 public void setData(List<String> stringList) {
  //The data in the previous input box is stored in the collection of this page   = stringList;
  showData();
 }

 private void showData() {
  //Because you have to re-draw every time, remove the previous layout and display the updated layout  removeAllViews();
  //Preferring to the following layout, add a horizontal layout  LinearLayout linearLayout_h = (LinearLayout) (mcontext,.item_water_fall_h,null);
  addView(linearLayout_h);
  //Define temporary variables.  Used to calculate the length of the characters on the last line  int len = 0;
  for (int i = 0;i<();i++){
   String str = (i);
   //Add the second string length with the existing string length of the record   len += ();
   //-Judgement If it is greater than the maximum length, it means that this line cannot be put down   //Requires automatic wrapping   if (len > mMaxSize){
    //Add a horizontal layout like the layout    linearLayout_h = (LinearLayout) (mcontext,.item_water_fall_h,null);
    addView(linearLayout_h);
    //After the line break, it is not added, so the current rescue is the length of the last line.    len = ();
   }
   //Add a textView control   View view = (mcontext,.water_fall_textview,null);
   //Get its ID   TextView textView = (.water_fall_textview);
   //After getting it, assign it a value (give it the value in the input box)   (str);
   //Add to layout   linearLayout_h.addView(view);

   //Set weights Let all controls in each line add up to fill the entire line and allocate it reasonably    layoutParams = () ();
    = 1;
   (layoutParams);

   final int index = i;
   (new OnClickListener() {
    @Override
    public void onClick(View v) {
     (mcontext,"You clicked"+(index),Toast.LENGTH_SHORT).show();
    }
   });
   (new OnLongClickListener() {
    @Override
    public boolean onLongClick(View v) {
     (index);
     showData();
     return false;
    }
   });
  }
 }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:andro
 android:
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="horizontal">

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:andro
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="horizontal"
 >

 <TextView
  android:
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:background="@color/colorAccent"
  android:layout_weight="1"
  android:textSize="20dp"
  android:layout_marginRight="5dp"
  android:layout_marginLeft="5dp"
  android:layout_marginTop="10dp"
  android:gravity="center"
  />
</LinearLayout>