簡單流式佈局

加粗樣式

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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="match_parent"
    tools:context=".MainActivity">
    

    <com.example.liushimodule.weight.MyFloatLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/MyFloat"
        ></com.example.liushimodule.weight.MyFloatLayout>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:visibility="gone"
        android:text="dcasc"
        android:background="@drawable/shape"
        />

</android.support.constraint.ConstraintLayout>

MainActivity

package com.example.liushimodule;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import com.example.liushimodule.weight.MyFloatLayout;

public class MainActivity extends AppCompatActivity {
    private String[] data = {"lvxx", "lgqflvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlgqflvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxxlvxx", "heheda", "memeda", "papapa", "lgqf", "heheda", "memeda", "papapa", "lgqf", "heheda", "memeda", "papapa", "lgqf", "heheda", "memeda", "papapa", "lgqf", "heheda", "memeda", "papapa"};
    private MyFloatLayout myFloatLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myFloatLayout = findViewById(R.id.MyFloat);
        myFloatLayout.setData(data);
    }
}

MyFloatLayout

package com.example.liushimodule.weight;

import android.content.Context;
import android.graphics.Color;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.example.liushimodule.R;

public class MyFloatLayout extends LinearLayout {
    private int mScreenWidth;
    public MyFloatLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        DisplayMetrics metrics=context.getResources().getDisplayMetrics();
        mScreenWidth= metrics.widthPixels;
        //設置佈局顯示垂直顯示
        setOrientation(VERTICAL);
    }

    public void setData(String[] data){
        LinearLayout  linearLayout=getLin();

        for (int i = 0; i <data.length ; i++) {
            String tmp=data[i];
            int numWidth=0;
            //得到一行LinearLayout到底有多少子控件  因爲要計算每個子控件加在一起的寬度
            int childCount= linearLayout.getChildCount();
            //這個for循環只是計算一個LinearLayout的所有的子控件的寬和高
            for (int j = 0; j <childCount; j++) {
                //得到每一個子控件
                TextView tv = (TextView) linearLayout.getChildAt(j);
                LayoutParams layoutParams = (LayoutParams) tv.getLayoutParams();
                int leftMargin=layoutParams.leftMargin;
                //測量這個TV的寬和高
                tv.measure(getMeasuredWidth(),getMeasuredHeight());
                numWidth+=tv.getMeasuredWidth()+leftMargin+tv.getPaddingLeft()+getPaddingRight();
            }
            TextView dataText=getText();
            //設置屬性
            LayoutParams params=new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
            params.leftMargin=10;
            params.topMargin=2;
            dataText.setLayoutParams(params);
            dataText.setText(tmp);
            dataText.measure(getMeasuredWidth(),getMeasuredHeight());
            int dataTextWidth=dataText.getMeasuredWidth()+dataText.getPaddingLeft()+dataText.getPaddingRight();
            //考慮到一個字符串很長 就直接超過整個屏幕的長了
            if(dataTextWidth>=mScreenWidth){
                String s = tmp.substring(0, 4);
                dataText.setText(s+"...");
                dataText.measure(getMeasuredWidth(),getMeasuredHeight());
                dataTextWidth=dataText.getMeasuredWidth();
            }

            if(mScreenWidth>=numWidth+dataTextWidth){
                linearLayout.addView(dataText);
            }else{
                linearLayout=getLin();
                linearLayout.addView(dataText);
            }
        }


    }
    //初始化子LinearLayout
    private LinearLayout getLin(){
        LinearLayout linearLayout=new LinearLayout(getContext());
        //控制組件大小的一個工具LayoutParams
        LayoutParams params=new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
        linearLayout.setLayoutParams(params);
        //this本類對象
        this.addView(linearLayout);
//只要重新添加view了自動換行
        return  linearLayout;
    }

    private TextView getText(){
        TextView textView=new TextView(getContext());
        textView.setTextSize(20);
        textView.setTextColor(Color.BLACK);
        textView.setBackgroundResource(R.drawable.shape);
        textView.setPadding(10,10,10,10);
        return  textView;

    }

}