FlowLayout流式布局实现搜索清空历史记录
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2022-04-30 22:54:26
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...
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。
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