FlowLayout流式布局实现搜索清空历史记录

本文实例为大家分享了flowlayout实现搜索清空历史记录的具体代码，供大家参考，具体内容如下

效果图:点击搜索框将搜索的历史在流式布局中展示出来,清空历史记录就会将历史清空,每次搜索后都存入sp中,每次进入页面都先判断sp里是否有值并展示

首先需要导入一个module，下载地址

下载完这个工程后,需要将里面的flowlayout-lib导入到工程中,

导入工程的步骤:file - new - import module 选中这个flowlayout-lib

导入完成后,在项目的build.gradle中对导入的module进行依赖

compile project(':flowlayout-lib') 

activity_main.xml

<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:orientation="vertical" 
 android:padding="16dp" 
 tools:context="com.example.searchhistory.mainactivity"> 
 
 <linearlayout 
  android:layout_width="match_parent" 
  android:layout_height="wrap_content" 
  android:gravity="center_vertical" 
  android:orientation="horizontal"> 
 
  <edittext 
   android:id="@+id/edt" 
   android:layout_width="0dp" 
   android:layout_height="wrap_content" 
   android:layout_weight="4" /> 
 
  <button 
   android:id="@+id/btn" 
   android:layout_width="0dp" 
   android:layout_height="wrap_content" 
   android:layout_weight="1" 
   android:text="搜索" /> 
 
  <button 
   android:id="@+id/clear" 
   android:layout_width="0dp" 
   android:layout_height="wrap_content" 
   android:layout_weight="1" 
   android:text="清空" /> 
 </linearlayout> 
 
 <scrollview 
  android:layout_width="match_parent" 
  android:layout_height="match_parent"> 
 
  <com.zhy.view.flowlayout.tagflowlayout 
   android:id="@+id/id_flowlayout" 
   android:layout_width="fill_parent" 
   android:layout_height="wrap_content" 
   app:max_select="-1" /> 
 </scrollview> 
</linearlayout> 

tv.xml

<textview xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="wrap_content" 
 android:layout_height="wrap_content" 
 android:layout_marginleft="5dp" 
 android:layout_marginright="5dp" 
 android:layout_margintop="10dp" 
 android:background="@drawable/tag_bg" 
 android:text="helloworld" 
 android:textcolor="#999999" 
 android:textsize="16sp"> 
 
</textview> 

drawable下面创建

checked_bg.xml

<?xml version="1.0" encoding="utf-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android"> 
 <solid android:color="#ffffff" /> 
 <corners android:radius="2dp" /> 
 <stroke 
  android:width="1dp" 
  android:color="#dddddd" /> 
 
 <padding 
  android:bottom="5dp" 
  android:left="14dp" 
  android:right="14dp" 
  android:top="5dp" /> 
 
</shape> 

normal_bg.xml

<?xml version="1.0" encoding="utf-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android"> 
 <solid android:color="#ffffff" /> 
 <corners android:radius="2dp" /> 
 <stroke 
  android:width="1dp" 
  android:color="#dddddd" /> 
 <padding 
  android:bottom="5dp" 
  android:left="14dp" 
  android:right="14dp" 
  android:top="5dp" /> 
</shape> 

tag_bg.xml

<?xml version="1.0" encoding="utf-8"?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
 <item android:drawable="@drawable/checked_bg" android:state_checked="true"> 
 
 </item> 
 <item android:drawable="@drawable/normal_bg"></item> 
</selector> 

text_color.xml

<?xml version="1.0" encoding="utf-8"?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
 
 <item android:color="#999999" android:state_checked="true" /> 
 <item android:color="#f692ff" /> 
 
</selector> 

mainactivity

public class mainactivity extends appcompatactivity { 
 private tagflowlayout mflowlayout; 
 private edittext edittext; 
 private button button; 
 private list<string> strings; 
 string history=""; 
 int a=0; 
 list<string> historylist = new arraylist<>(); 
 //布局管理器 
 private layoutinflater minflater; 
 //流式布局的子布局 
 private textview tv; 
 public handler handler = new handler() { 
  @override 
  public void handlemessage(message msg) { 
   switch (msg.what) { 
    case 1: 
     mflowlayout.setadapter(new tagadapter<string>(strings) { 
      @override 
      public view getview(flowlayout parent, int position, string s) { 
       tv = (textview) minflater.inflate(r.layout.tv, 
         mflowlayout, false); 
       tv.setvisibility(view.visible); 
       tv.settext(s); 
       return tv; 
      } 
     }); 
     break; 
 
   } 
   super.handlemessage(msg); 
  } 
 }; 
 private button clearbtn; 
 
 
 @requiresapi(api = build.version_codes.m) 
 @override 
 protected void oncreate(bundle savedinstancestate) { 
  super.oncreate(savedinstancestate); 
  setcontentview(r.layout.activity_main); 
  minflater = layoutinflater.from(this); 
  mflowlayout = (tagflowlayout) findviewbyid(r.id.id_flowlayout); 
  edittext = (edittext) findviewbyid(r.id.edt); 
  button = (button) findviewbyid(r.id.btn); 
  clearbtn = findviewbyid(r.id.clear); 
 
  final sharedpreferences preferences = getsharedpreferences("config", 0); 
  final sharedpreferences.editor editor = preferences.edit(); 
 
  strings = new arraylist<>(); 
  final string string = preferences.getstring("string", " "); 
 
  string[] split = string.split(" "); 
  if (split.length>0&&!string.equals(" ")){ 
   for (int i=0;i<split.length;i++){ 
    strings.add(split[i]); 
   } 
   handler.sendemptymessagedelayed(1, 0); 
  } 
 
 
  clearbtn.setonclicklistener(new view.onclicklistener() { 
   @override 
   public void onclick(view view) { 
    history=""; 
    historylist.clear(); 
    editor.clear().commit(); 
    //清空下面的 
    strings.clear(); 
    handler.sendemptymessagedelayed(1, 0); 
   } 
  }); 
 
 
  button.setonclicklistener(new view.onclicklistener() { 
   @requiresapi(api = build.version_codes.m) 
   @override 
   public void onclick(view v) { 
    string string = preferences.getstring("string", ""); 
 
    historylist.clear(); 
 
    if (!edittext.gettext().tostring().trim().equals("")) { 
     string aa = edittext.gettext().tostring().trim(); 
 
     set<string> set = new arrayset<>(); 
     set.add(aa); 
     historylist.add(aa); 
     a++; 
     history+= aa+" "; 
     for (int i=0;i<historylist.size();i++){ 
      editor.putstring("string",history).commit(); 
      strings.add(historylist.get(i)); 
     } 
     //通知handler更新ui 
     handler.sendemptymessagedelayed(1, 0); 
    }else{ 
     toast.maketext(mainactivity.this, "请输入要搜索的内容", toast.length_short).show(); 
    } 
   } 
  }); 
  //流式布局tag的点击方法 
  mflowlayout.setontagclicklistener(new tagflowlayout.ontagclicklistener() { 
   @override 
   public boolean ontagclick(view view, int position, flowlayout parent) { 
    toast.maketext(mainactivity.this, tv.gettext(), toast.length_short).show(); 
    return true; 
   } 
  }); 
 } 
} 

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。