我要评论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移动技术网。
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