自定义View，流式布局

<?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="match_parent"
    android:background="#babac4"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <LinearLayout
        android:background="@drawable/shape_bg"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <EditText
            android:layout_width="0dp"
            android:layout_weight="9"
            android:layout_height="wrap_content"
            android:id="@+id/editText"
            android:hint="请输入想要搜索的书籍" />
        <Button
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:background="@drawable/a_4"
            android:id="@+id/loginbtn"/>
    </LinearLayout>
<com.example.asus.week2demo.utils.LiuShi
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/liull"/>
</LinearLayout>

MainActivity

package com.example.asus.week2demo;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import com.example.asus.week2demo.utils.LiuShi;
import com.fynn.fluidlayout.FluidLayout;

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

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.Unbinder;

public class MainActivity extends AppCompatActivity {

    @BindView(R.id.editText)
    EditText editText;
    @BindView(R.id.loginbtn)
    Button loginbtn;
    @BindView(R.id.liull)
    LiuShi liull;
    private List<String> list=new ArrayList<>();

    private Unbinder bind;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bind = ButterKnife.bind(this);
        initData();
    }

    private void initData() {

        loginbtn.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                String st = editText.getText().toString();
                list.add(st);
                liull.removeAllViews();
                for (int i = 0; i < list.size(); i++) {
                    TextView tv = new TextView(MainActivity.this);
                    tv.setText(list.get(i));
                    liull.addView(tv);

                    tv.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            startActivity(new Intent(MainActivity.this,ShowActivity.class));
                        }
                    });
                }
                liull.setPadding(5, 5, 5, 5);
            }
        });


    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        bind.unbind();
    }
}




LiuShi

package com.example.asus.week2demo.utils;

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

public class LiuShi extends ViewGroup {
    private int mLeftMargin = 20;
    private int mTopMargin = 20;


    public LiuShi(Context context) {
        this(context, null);
    }

    public LiuShi(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public LiuShi(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        measureChildren(widthMeasureSpec, heightMeasureSpec);
        int leftMargin = mLeftMargin;
        int topMargin = mTopMargin;
        int ViewWidth = 0;
        int ViewHeight = 0;
        int sizeWidth = MeasureSpec.getSize(widthMeasureSpec);
        int sizeHeight = MeasureSpec.getSize(heightMeasureSpec);
        int modelWidth = MeasureSpec.getMode(widthMeasureSpec);
        int modelHeight = MeasureSpec.getMode(heightMeasureSpec);
        switch (modelHeight) {
            case MeasureSpec.AT_MOST:
                int measuredHeight = 0;
                for (int i = 0; i < getChildCount(); i++) {
                    int measuredWidth = getChildAt(i).getMeasuredWidth();
                    measuredHeight = getChildAt(i).getMeasuredHeight();
                    if (leftMargin + measuredWidth + mLeftMargin > getWidth()) {
                        leftMargin = mLeftMargin;
                        topMargin += measuredHeight + mTopMargin;
                    }
                    leftMargin += measuredWidth + mLeftMargin;
                }
                topMargin += measuredHeight + mTopMargin;
                break;
        }
        setMeasuredDimension(sizeWidth, topMargin);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        int leftMargin = mLeftMargin;
        int topMargin = mTopMargin;
        for (int i = 0; i < getChildCount(); i++) {
            int measuredWidth = getChildAt(i).getMeasuredWidth();
            int measuredHeight = getChildAt(i).getMeasuredHeight();
            if (leftMargin + measuredWidth + mLeftMargin > getWidth()) {
                leftMargin = mLeftMargin;
                topMargin += measuredHeight + mTopMargin;
                getChildAt(i).layout(leftMargin, topMargin, leftMargin + measuredWidth, topMargin + measuredHeight);
            } else {
                getChildAt(i).layout(leftMargin, topMargin, leftMargin + measuredWidth, topMargin + measuredHeight);
            }
            leftMargin += measuredWidth + mLeftMargin;
        }
    }

}