====================MainActivity=======================
public class MainActivity extends AppCompatActivity {

    private EditText etSearch;
    private TextView tvSearch;
    private Button btn_delete;
    private RecordSQLiteOpenHelper helper;
    private SimpleCursorAdapter adapter;
    private 
 
SQLiteDatabase db;
    private ListView lvSearch;
    private FlowLayout flowLayout;

    @Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //初始化控制元件
etSearch = (EditText) findViewById(R.id.ed_search
 
);
        tvSearch = (TextView) findViewById(R.id.tv_search);
        btn_delete = (Button) findViewById(R.id.btn_delete);
        lvSearch = (ListView) findViewById(R.id.lv_search);
        //初始化監聽
initListener();
        //初始化資料
initData();
        //流式佈局
initChildViews();
    }

    //流式佈局
private void 
 
initChildViews() {
        flowLayout = (FlowLayout) findViewById(R.id.flow_layout);
        ViewGroup.MarginLayoutParams lp = new ViewGroup.MarginLayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        lp.leftMargin = 5;
        lp.rightMargin = 5;
        lp.topMargin = 5;
        lp.bottomMargin = 5;
        for(int i = 0; i < datas.length; i ++){
            TextView view = new TextView(this);
            view.setText(datas[i]);
            view.setTextColor(Color.WHITE);
            view.setBackgroundDrawable(getResources().getDrawable(R.drawable.textview_bg));
            flowLayout.addView(view,lp);
        }
    }

    private void initListener() {
        //觸控框的監聽事件
etSearch.setOnTouchListener(new View.OnTouchListener() {
            @Override
public boolean onTouch(View view, MotionEvent motionEvent) {
                //點選輸入框顯示搜尋並獲取焦點
etSearch.setFocusable(true);
                etSearch.setFocusableInTouchMode(true);
                tvSearch.setVisibility(View.VISIBLE);
                return false;
            }
        });
        tvSearch.setOnClickListener(new View.OnClickListener() {
            @Override
public void onClick(View view) {
                // 按完搜尋鍵後將當前查詢的關鍵字儲存起來,如果該關鍵字已經存在就不執行儲存
boolean hasData = hasData(etSearch.getText().toString().trim());
                if (!hasData) {
                    insertData(etSearch.getText().toString().trim());

                    queryData("");
                }
                etSearch.setFocusable(false);
                etSearch.setFocusableInTouchMode(false);
                etSearch.clearFocus();
                tvSearch.setVisibility(View.GONE);

                //跳轉到H5介面
String searchContent = etSearch.getText().toString().trim();
                Toast.makeText(MainActivity.this, "搜尋內容為："+searchContent, Toast.LENGTH_SHORT).show();
etSearch.setText("");
            }
        });
        //"清空搜尋歷史"按鈕
btn_delete.setOnClickListener(new View.OnClickListener() {
            @Override
public void onClick(View v) {

                //清空資料庫
deleteData();
                queryData("");
            }
        });
    }

    private void deleteData() {
        db = helper.getWritableDatabase();
        db.execSQL("delete from records");
        db.close();
    }

    /*檢查資料庫中是否已經有該條記錄*/
private boolean hasData(String tempName) {
        //從Record這個表裡找到name=tempName的id
Cursor cursor = helper.getReadableDatabase().rawQuery(
                "select id as _id,name from records where name =?", new String[]{tempName});
        //判斷是否有下一個
return cursor.moveToNext();
    }
    private String datas[] = {
            "羊毛衫 新品","碟子","蘋果8",
            "髕骨帶","胸罩","瑜伽球",

    };
    private void initData() {
        //插入資料
initSearch();
        //例項化資料庫SQLiteOpenHelper子類物件
helper = new RecordSQLiteOpenHelper(this);
        // 第一次進入時查詢所有的歷史記錄
queryData("");
    }

    private void initSearch() {
        for (int i = 0; i < datas.length; i++) {
            final TextView textView = new TextView(this);
            textView.setText(datas[i]);
           //儲存按下能顯示selector的效果，需要設定一個如下的屬性
            // textView.setBackground(DrawUtils.getSelector(DrawUtils.getDrawable(MainActivity.this, Color.rgb(210, 210, 210), DensityUtil.dip2px(this, 4)), DrawUtils.getDrawable(MainActivity.this, Color.WHITE, DensityUtil.dip2px(this, 4))));            //新增點選事件，也是實現顯示selector的效果的一種方式
textView.setOnClickListener(new View.OnClickListener() {
                @Override
public void onClick(View v) {
                    //跳轉到H5介面
String searchContent = textView.getText().toString();
                    Toast.makeText(MainActivity.this, "" + searchContent, Toast.LENGTH_SHORT).show();
                    etSearch.setText("");
                }
            });
        }
    }

    /*模糊查詢資料 並顯示在ListView列表上*/
private void queryData(String tempName) {
        //模糊搜尋
Cursor cursor = helper.getReadableDatabase().rawQuery(
                "select id as _id,name from records where name like '%" + tempName + "%' order by id desc ", null);
        // 建立adapter介面卡物件,裝入模糊搜尋的結果
adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, cursor, new String[]{"name"},
                new int[]{android.R.id.text1}, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
        // 設定介面卡
lvSearch.setAdapter(adapter);
        adapter.notifyDataSetChanged();
    }
    /*插入資料*/
private void insertData(String tempName) {
        db = helper.getWritableDatabase();
        db.execSQL("insert into records(name) values('" + tempName + "')");
        db.close();
    }
}
======================DrawUtils============================

package com.example.lenovo.zhoukao_01;

/**
 * Created by lenovo on 2017/12/4.
 */
class DrawUtils {
}

======================FlowLayout===========================

/**
 * Created by lenovo on 2017/12/4.
 */
public class FlowLayout extends ViewGroup {
    //儲存所有子View
private List<List<View>> mAllChildViews = new ArrayList<>();
    //每一行的高度
private List<Integer> mLineHeight = new ArrayList<>();

    public FlowLayout(Context context) {
        this(context, null);}
    public FlowLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);}
    public FlowLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);}
    @Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {//父控制元件傳進來的寬度和高度以及對應的測量模式
int sizeWidth = MeasureSpec.getSize(widthMeasureSpec);
        int modeWidth = MeasureSpec.getMode(widthMeasureSpec);
        int sizeHeight = MeasureSpec.getSize(heightMeasureSpec);
        int modeHeight = MeasureSpec.getMode(heightMeasureSpec);
        //如果當前ViewGroup的寬高為wrap_content的情況
int width = 0;//自己測量的 寬度
int height = 0;//自己測量的高度
        //記錄每一行的寬度和高度
int lineWidth = 0;
        int lineHeight = 0;
        //獲取子view的個數
int childCount = getChildCount();
        for(int i = 0;i < childCount; i ++){
            View child = getChildAt(i);
            //測量子View的寬和高
measureChild(child, widthMeasureSpec, heightMeasureSpec);
            //得到LayoutParams
MarginLayoutParams lp = (MarginLayoutParams) getLayoutParams();
            //子View佔據的寬度
int childWidth = child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin;
            //子View佔據的高度
int childHeight = child.getMeasuredHeight() + lp.topMargin + lp.bottomMargin;
            //換行時候
if(lineWidth + childWidth > sizeWidth){
                //對比得到最大的寬度
width = Math.max(width, lineWidth);
                //重置lineWidth
lineWidth = childWidth;
                //記錄行高
height += lineHeight;
                lineHeight = childHeight;
            }else{//不換行情況
                //疊加行寬
lineWidth += childWidth;
                //得到最大行高
lineHeight = Math.max(lineHeight, childHeight);
            }
            //處理最後一個子View的情況
if(i == childCount -1){
                width = Math.max(width, lineWidth);
                height += lineHeight;
            }
        }
        //wrap_content
setMeasuredDimension(modeWidth == MeasureSpec.EXACTLY ? sizeWidth : width,
                modeHeight == MeasureSpec.EXACTLY ? sizeHeight : height);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

    @Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {mAllChildViews.clear();
        mLineHeight.clear();
        //獲取當前ViewGroup的寬度
int width = getWidth();

        int lineWidth = 0;
        int lineHeight = 0;
        //記錄當前行的view
List<View> lineViews = new ArrayList<View>();
        int childCount = getChildCount();
        for(int i = 0;i < childCount; i ++){
            View child = getChildAt(i);
            MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams();
            int childWidth = child.getMeasuredWidth();
            int childHeight = child.getMeasuredHeight();

            //如果需要換行
if(childWidth + lineWidth + lp.leftMargin + lp.rightMargin > width){
                //記錄LineHeight
mLineHeight.add(lineHeight);
                //記錄當前行的Views
mAllChildViews.add(lineViews);
                //重置行的寬高
lineWidth = 0;
                lineHeight = childHeight + lp.topMargin + lp.bottomMargin;
                //重置view的集合
lineViews = new ArrayList();
            }
            lineWidth += childWidth + lp.leftMargin + lp.rightMargin;
            lineHeight = Math.max(lineHeight, childHeight + lp.topMargin + lp.bottomMargin);
            lineViews.add(child);
        }
        //處理最後一行
mLineHeight.add(lineHeight);
        mAllChildViews.add(lineViews);

        //設定子View的位置
int left = 0;
        int top = 0;
        //獲取行數
int lineCount = mAllChildViews.size();
        for(int i = 0; i < lineCount; i ++){
            //當前行的views和高度
lineViews = mAllChildViews.get(i);
            lineHeight = mLineHeight.get(i);
            for(int j = 0; j < lineViews.size(); j ++){
                View child = lineViews.get(j);
                //判斷是否顯示
if(child.getVisibility() == View.GONE){
                    continue;
                }
                MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams();
                int cLeft = left + lp.leftMargin;
                int cTop = top + lp.topMargin;
                int cRight = cLeft + child.getMeasuredWidth();
                int cBottom = cTop + child.getMeasuredHeight();
                //進行子View進行佈局
child.layout(cLeft, cTop, cRight, cBottom);
                left += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin;
            }
            left = 0;
            top += lineHeight;
        }

    }
    /**
     * 與當前ViewGroup對應的LayoutParams
     */
@Override
public LayoutParams generateLayoutParams(AttributeSet attrs) {return new MarginLayoutParams(getContext(), attrs);
    }

}

================MyListView===================

public class MyListView extends ListView {
    public MyListView(Context context) {
        super(context);
    }

    public MyListView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public MyListView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }
    /**
     * 重新計算高度
     * @param widthMeasureSpec
* @param heightMeasureSpec
*/
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
    }
}

===================RecordSQLiteOpenHelper===================

public class RecordSQLiteOpenHelper extends SQLiteOpenHelper{
    private static String name = "temp.db";
    private static Integer version = 1;
    public RecordSQLiteOpenHelper(Context context) {
        super(context, name, null, version);
    }

    @Override
public void onCreate(SQLiteDatabase db) {
        db.execSQL("create table records(id integer primary key autoincrement,name varchar(200))");        

         db.execSQL("insert into records(name) values('熱水器')");

} @Overridepublic void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) { }} ====================drawable下的textview_bg.xml=======

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <corners android:radius="5dp"/>
    <solid android:color="#999"/>
    <size android:height="10dp" android:width="10dp"/>
</shape>

===================activity_main===================

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
    <LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
        <LinearLayout
android:layout_width="match_parent"
android:layout_height="92px"
android:gravity="center_vertical"
android:focusable="true"
android:padding="6px"
android:focusableInTouchMode="true"
android:orientation="horizontal">
            <EditText
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_gravity="center_vertical"
android:layout_margin="6px"
android:layout_weight="1"
android:focusable="false"
android:focusableInTouchMode="false"
android:hint="你好啊 我來啦 別跑啊"
android:id="@+id/ed_search"
android:paddingBottom="10px"
android:paddingLeft="30px"
android:paddingTop="10px"
android:textColor="#333"
android:textColorHint="#666"
android:textSize="12sp"/>
            <TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="@+id/tv_search"
android:text="搜尋"
android:layout_marginRight="20px"
android:layout_marginLeft="16px"
android:gravity="center"
android:textColor="#000fff"
android:textSize="14sp"/>
        </LinearLayout>
        <LinearLayout
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="wrap_content">
            <TextViewandroid:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="熱搜"
android:padding="20px"
android:textSize="36px"/>       

                  <com.ljn.myapplication.FlowLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:id="@+id/flow_layout">
                  </com.ljn.myapplication.FlowLayout>

</LinearLayout>
  <LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"android:padding="20px">
<TextViewandroid:layout_width="wrap_content"android:layout_weight="0"android:layout_height="wrap_content"android:text="歷史搜尋"android:textSize="36px"/>

                 <com.ljn.myapplication.MyListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/lv_search">
                 </com.ljn.myapplication.MyListView>

</LinearLayout>
<Buttonandroid:layout_gravity="center"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="清空歷史搜尋"android:id="@+id/btn_delete"/>
</LinearLayout>
</ScrollView>