本文实例为大家分享了Android实现搜索历史的具体代码，供大家参考，具体内容如下

SharedPreferences实现本地搜索历史功能，覆盖搜索重复的文本，可清空

1. 判断搜索内容是否含表情，不需要可以不判断

/**

* 校验字符串是否含有表情

* @param content

* @return

*/

public static boolean hasEmoji(String content){

Pattern pattern = Pattern.compile("[\ud83c\udc00-\ud83c\udfff]|[\ud83d\udc00-\ud83d\udfff]|[\u2600-\u27ff]");

Matcher matcher = pattern.matcher(content);

if(matcher .find()){

return true;

}

return false;

}

2.软键盘工具类弹出、关闭，不需要可以不判断

public class KeyBoardUtils {

/**

* 打开软键盘

*

* @param editText

* @param context

*/

public static void openKeybord(EditText editText, Context context) {

InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);

imm.showSoftInput(editText, InputMethodManager.RESULT_SHOWN);

imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);

}

/**

* 关闭软键盘

* @param editText

* @param context

*/

public static void closeKeybord(EditText editText, Context context) {

InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);

imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);

}

/**

* 判断软键盘是否显示

* @param activity

* @return

*/

public static boolean isSoftShowing(Activity activity) {

//获取当前屏幕内容的高度

int screenHeight = activity.getWindow().getDecorView().getHeight();

//获取View可见区域的bottom

Rect rect = new Rect();

//DecorView即为activity的顶级view

activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);

//考虑到虚拟导航栏的情况(虚拟导航栏情况下：screenHeight = rect.bottom + 虚拟导航栏高度)

//选取screenHeight*2/3进行判断

return screenHeight*2/3 > rect.bottom;

}

public static void hintKeyboard(Activity activity) {

InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);

if (imm.isActive() && activity.getCurrentFocus() != null) {

if (activity.getCurrentFocus().getWindowToken() != null) {

imm.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);

}

}

}

/**

* 打开软键盘

*/

public static void openKeyboard(Handler mHandler, int s, final Activity activity) {

mHandler.postDelayed(new Runnable() {

@Override

public void run() {

InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);

imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);

}

}, s);

}

/**

* 点击空白处关闭软键盘

*/

public static void inputClose(View view, Context context) {

if (view instanceof EditText) {

view.clearFocus();

}

try {

InputMethodManager im = (InputMethodManager)

context.getSystemService(Context.INPUT_METHOD_SERVICE);

im.hideSoftInputFromWindow(view.getWindowToken(), 0);

} catch (NullPointerException e) {

e.printStackTrace();

}

}

}

3.存储工具类

import android.annotation.TargetApi;

import android.content.Context;

import android.content.SharedPreferences;

import android.os.Build;

/**

* @author Administrator

* SharedPreferences使用工具类

*/

@TargetApi(Build.VERSION_CODES.GINGERBREAD)

public class SPUtils {

private static SharedPreferences sp;

private static SPUtils instance = new SPUtils();

public static Context mContext;

/**

* 保存在手机里面的文件名

*/

public static final String FILE_NAME = "maigoo";

private SPUtils() {

}

/**

* xxx改为你想保存的sp文件名称

*/

public static SPUtils getInstance(Context context) {

mContext = context;

if (sp == null) {

sp = context.getApplicationContext().getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);

}

return instance;

}

/**

* 保存数据

*/

public void put(String key, Object value) {

if (value instanceof Integer) {

sp.edit().putInt(key, (Integer) value).apply();

} else if (value instanceof String) {

sp.edit().putString(key, (String) value).apply();

} else if (value instanceof Boolean) {

sp.edit().putBoolean(key, (Boolean) value).apply();

} else if (value instanceof Float) {

sp.edit().putFloat(key, (Float) value).apply();

} else if (value instanceof Long) {

sp.edit().putLong(key, (Long) value).apply();

}

}

/**

* 2. 读取数据

*/

public int getInt(String key, int defValue) {

return sp.getInt(key, defValue);

}

public String getString(String key, String defValue) {

return sp.getString(key, defValue);

}

public boolean getBoolean(String key, boolean defValue) {

return sp.getBoolean(key, defValue);

}

/**

* 读取数据

*

* @param key

* @param defValue

* @return

*/

public T get(String key, T defValue) {

T t = null;

if (defValue instanceof String || defValue == null) {

String value = sp.getString(key, (String) defValue);

t = (T) value;

} else if (defValue instanceof Integer) {

Integer value = sp.getInt(key, (Integer) defValue);

t = (T) value;

} else if (defValue instanceof Boolean) {

Boolean value = sp.getBoolean(key, (Boolean) defValue);

t = (T) value;

} else if (defValue instanceof Float) {

Float value = sp.getFloat(key, (Float) defValue);

t = (T) value;

}

return t;

}

/**

* 保存搜索记录

*

* @param keyword

*/

public void save(String keyword) {

// 获取搜索框信息

SharedPreferences mysp = mContext.getSharedPreferences("search_history", 0);

String old_text = mysp.getString("history", "");

// 利用StringBuilder.append新增内容，逗号便于读取内容时用逗号拆分开

StringBuilder builder = new StringBuilder(old_text);

builder.append(keyword + ",");

// 判断搜索内容是否已经存在于历史文件，已存在则不重复添加

if (!old_text.contains(keyword + ",")) {

SharedPreferences.Editor myeditor = mysp.edit();

myeditor.putString("history", builder.toString());

myeditor.commit();

}

}

public String[] getHistoryList() {

// 获取搜索记录文件内容

SharedPreferences sp = mContext.getSharedPreferences("search_history", 0);

String history = sp.getString("history", "");

// 用逗号分割内容返回数组

String[] history_arr = history.split(",");

// 保留前50条数据

if (history_arr.length > 50) {

String[] newArrays = new String[50];

System.arraycopy(history_arr, 0, newArrays, 0, 50);

}

return history_arr;

}

/**

* 清除搜索记录

*/

public void cleanHistory() {

SharedPreferences sp = mContext.getSharedPreferences("search_history", 0);

SharedPreferences.Editor editor = sp.edit();

editor.clear();

editor.commit();

}

}

4.Activity主要功能实现

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import kemizhibo.rhkj.com.ijkpalaydemo.search.KeyBoardUtils;

import kemizhibo.rhkj.com.ijkpalaydemo.search.RegularUtils;

import kemizhibo.rhkj.com.ijkpalaydemo.search.SPUtils;

public class Main2Activity extends AppCompatActivity {

ZFlowLayout historyFl;

EditText autoSearch;

Button button_search;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main2);

historyFl = findViewById(R.id.history_fl);

autoSearch=findViewById(R.id.autoSearch);

button_search=findViewById(R.id.button_search);

initHistory();

button_search.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

if (KeyBoardUtils.isSoftShowing(Main2Activity.this)) {

KeyBoardUtils.hintKeyboard(Main2Activity.this);

}

String searchKey = autoSearch.getText().toString();

if (!isNullorEmpty(searchKey)) {

if (RegularUtils.hasEmoji(autoSearch.getText().toString())) {

//含有非法字符串

} else {

//搜索

String keyWord = autoSearch.getText().toString();

if (!isNullorEmpty(keyWord)) {

SPUtils.getInstance(Main2Activity.this).save(autoSearch.getText().toString());

}

initHistory();

}

} else {

//搜索为空

}

}

});

}

private boolean isNullorEmpty(String str) {

return str == null || "".equals(str);

}

/**

* 初始化 历史记录列表

*/

private void initHistory() {

final String[] data = SPUtils.getInstance(Main2Activity.this).getHistoryList();

ViewGroup.MarginLayoutParams layoutParams = new ViewGroup.MarginLayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

layoutParams.setMargins(10, 10, 10, 10);

historyFl.removeAllViews();

for (int i = 0; i < data.length; i++) {

if (isNullorEmpty(data[i])) {

return;

}

//有数据往下走

final int j = i;

//添加分类块

View paramItemView = getLayoutInflater().inflate(R.layout.adapter_search_keyword, null);

TextView keyWordTv = paramItemView.findViewById(R.id.tv_content);

keyWordTv.setText(data[j]);

historyFl.addView(paramItemView, layoutParams);

keyWordTv.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

if (KeyBoardUtils.isSoftShowing(Main2Activity.this)) {

KeyBoardUtils.hintKeyboard(Main2Activity.this);

}

autoSearch.setText(data[j]);

autoSearch.setSelection(data[j].length());//光标在最后

if (!isNullorEmpty(data[j])) {

SPUtils.getInstance(Main2Activity.this).save(autoSearch.getText().toString());

}

//点击事件

}

});

// initautoSearch();

}

}

}

5.布局文件activity_main2 adapter_search_keyword

android:orientation="vertical"

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context="kemizhibo.rhkj.com.ijkpalaydemo.Main2Activity">

android:id="@+id/button_search"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="搜索"

/>

android:layout_width="match_parent"

android:layout_height="40dp"

android:id="@+id/autoSearch"

/>

android:id="@+id/history_fl"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_below="@+id/title"

android:orientation="vertical" />

android:id="@+id/tv_content"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="15dp"

android:layout_marginTop="12dp"

android:background="#00f"

android:paddingBottom="8dp"

android:paddingLeft="12dp"

android:paddingRight="12dp"

android:includeFontPadding="false"

android:paddingTop="8dp"

android:textColor="#fff"

/>

6.ZFlowLayout

import android.content.Context;

import android.util.AttributeSet;

import android.view.View;

import android.view.ViewGroup;

import java.util.ArrayList;

import java.util.List;

/*****************************

* @Copyright(c) 2014-2018

* @Author：dengyalan

* @Date：2018/1/16

* @Description：自定义搜索标签布局

* @Version:v1.0.0

*****************************/

public class ZFlowLayout extends ViewGroup {

/**

* 存储所有子View

*/

private List> mAllChildViews = new ArrayList<>();

/**

* 每一行的高度

*/

private List mLineHeight = new ArrayList<>();

public ZFlowLayout(Context context) {

this(context, null);

}

public ZFlowLayout(Context context, AttributeSet attrs) {

this(context, attrs, 0);

}

public ZFlowLayout(Context context, AttributeSet attrs, int defStyle) {

super(context, attrs, defStyle);

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

//父控件传进来的宽度和高度以及对应的测量模式

int sizeWidth = MeasureSpec.getSize(widthMeasureSpec);

int modeWidth = MeasureSpec.getMode(widthMeasureSpec);

int sizeHeight = MeasureSpec.getSize(heightMeasureSpec);

int modeHeight = MeasureSpec.getMode(heightMeasureSpec);

//如果当前ViewGroup的宽高为wrap_content的情况

//自己测量的宽度

int width = 0;

//自己测量的高度

int height = 0;

//记录每一行的宽度和高度

int lineWidth = 0;

int lineHeight = 0;

//获取子view的个数

int childCount = getChildCount();

for (int i = 0; i < childCount; i++) {

View child = getChildAt(i);

//测量子View的宽和高

measureChild(child, widthMeasureSpec, heightMeasureSpec);

//得到LayoutParams

MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams();

//子View占据的宽度

int childWidth = child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin;

//子View占据的高度

int childHeight = child.getMeasuredHeight() + lp.topMargin + lp.bottomMargin;

//换行时候

if (lineWidth + childWidth > sizeWidth) {

//对比得到最大的宽度

width = Math.max(width, lineWidth);

//重置lineWidth

lineWidth = childWidth;

//记录行高

height += lineHeight;

lineHeight = childHeight;

} else {//不换行情况

//叠加行宽

lineWidth += childWidth;

//得到最大行高

lineHeight = Math.max(lineHeight, childHeight);

}

//处理最后一个子View的情况

if (i == childCount - 1) {

width = Math.max(width, lineWidth);

height += lineHeight;

}

}

//wrap_content

setMeasuredDimension(modeWidth == MeasureSpec.EXACTLY ? sizeWidth : width,

modeHeight == MeasureSpec.EXACTLY ? sizeHeight : height);

}

@Override

protected void onLayout(boolean changed, int l, int t, int r, int b) {

mAllChildViews.clear();

mLineHeight.clear();

//获取当前ViewGroup的宽度

int width = getWidth();

int lineWidth = 0;

int lineHeight = 0;

//记录当前行的view

List lineViews = new ArrayList();

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();

//如果需要换行

if (childWidth + lineWidth + lp.leftMargin + lp.rightMargin > width) {

//记录LineHeight

mLineHeight.add(lineHeight);

//记录当前行的Views

mAllChildViews.add(lineViews);

//重置行的宽高

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);

}

//处理最后一行

mLineHeight.add(lineHeight);

mAllChildViews.add(lineViews);

//设置子View的位置

int left = 0;

int top = 0;

//获取行数

int lineCount = mAllChildViews.size();

for (int i = 0; i < lineCount; i++) {

//当前行的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);

//判断是否显示

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();

//进行子View进行布局

child.layout(cLeft, cTop, cRight, cBottom);

left += child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin;

}

left = 0;

top += lineHeight;

}

}

/**

* 与当前ViewGroup对应的LayoutParams

*/

@Override

public LayoutParams generateLayoutParams(AttributeSet attrs) {

return new MarginLayoutParams(getContext(), attrs);

}

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。