Android Custom View Streaming Layout Wrap Lines According to Number of Text

In this paper, we share the specific code of Android according to the number of words, for your reference, the specific contents are as follows

//Home Definition Data Box

package com.example.customwaterfallviewgroup;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

import java.util.ArrayList;
import java.util.List;

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

 private void initView() {
  final EditText editText = findViewById(R.id.edit);
  final CustomWaterFallViewGroup customWaterFallViewGroup = findViewById(R.id.water_fill);
  findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    // Gets the value of the input box 
    String str = editText.getText().toString();
    // Put text into the list 
    stringList.add(str);
    // Setting data 
    customWaterFallViewGroup.setData(stringList);
   }
  });
 }
}

//zhuye Layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:tools="http://schemas.android.com/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:id="@+id/edit"
  android:hint=" Input "
  />
 <Button
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:id="@+id/button"
  android:text="add"
  />
 <com.example.customwaterfallviewgroup.CustomWaterFallViewGroup
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:id="@+id/water_fill"
  />
</LinearLayout>

//Custom streaming layout

package com.example.customwaterfallviewgroup;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class CustomWaterFallViewGroup extends LinearLayout {
 // Set every 1 The length of the string with the largest line 
 int mMaxSize = 22;
 // An array of strings passed in 
 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 Layout 
 private void init() {
  // Set the outermost LinearLayout  Vertical layout 
  setOrientation(VERTICAL);
 }

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

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

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

 public void setData(List<String> stringList) {
  // Upper 1 The data in the input boxes is stored in the collection of this page  
  this.stringList = stringList;
  showData();
 }

 private void showData() {
  // Because every 1 I have to redraw it every time   So remove the previous layout   Show updated layout 
  removeAllViews();
  // Adds to the heel layout first 1 Strip horizontal layout 
  LinearLayout linearLayout_h = (LinearLayout) View.inflate(mcontext,R.layout.item_water_fall_h,null);
  addView(linearLayout_h);
  // Define temporary variables. Used to calculate the final 1 Existing character length of line 
  int len = 0;
  for (int i = 0;i<stringList.size();i++){
   String str = stringList.get(i);
   // Add the secondary string length to the recorded existing string length 
   len += str.length();
   //- Judge   If it is greater than the maximum length, it means that this 1 I can't let go of the line 
   // Word wrapping is required 
   if (len > mMaxSize){
    // Add image and layout 1 Strip horizontal layout 
    linearLayout_h = (LinearLayout) View.inflate(mcontext,R.layout.item_water_fall_h,null);
    addView(linearLayout_h);
    // After the line break, because it is not added,   So   The current rescue is the last 1 Length of line 
    len = str.length();
   }
   // Add 1 A textView Control 
   View view = View.inflate(mcontext,R.layout.water_fall_textview,null);
   // Object that gets it ID
   TextView textView = view.findViewById(R.id.water_fall_textview);
   // Assign a value to it after getting it   (The value in the input box   Give it) 
   textView.setText(str);
   // Add to the layout 
   linearLayout_h.addView(view);

   // Setting Weights   Let every 1 All the controls in the row add up to fill the whole row and allocate them reasonably 
   LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) view.getLayoutParams();
   layoutParams.weight = 1;
   view.setLayoutParams(layoutParams);

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

//Layout per 1 row

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/water_fall_h"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="horizontal">

</LinearLayout>

//Streaming layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="horizontal"
 >

 <TextView
  android:id="@+id/water_fall_textview"
  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>