android开发分享FlowLayout流式布局实现搜索清空历史记录

  compile project(':flowlayout-lib') 

  <linearlayout xmlns:android="https://schemas.android.com/apk/res/android"    xmlns:app="https://schemas.android.com/apk/res-auto"    xmlns:tools="https://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> 

  <textview xmlns:android="https://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> 

  <?xml version="1.0" encoding="utf-8"?>   <shape xmlns:android="https://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> 

  <?xml version="1.0" encoding="utf-8"?>   <shape xmlns:android="https://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> 

  <?xml version="1.0" encoding="utf-8"?>   <selector xmlns:android="https://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> 

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

  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;      }     });    }   }