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

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">

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:gravity="center_vertical"

android:orientation="horizontal">

android:id="@+id/edt"

android:layout_width="0dp"

android:layout_height="wrap_content"

android:layout_weight="4" />

android:id="@+id/btn"

android:layout_width="0dp"

android:layout_height="wrap_content"

android:layout_weight="1"

android:text="搜索" />

android:id="@+id/clear"

android:layout_width="0dp"

android:layout_height="wrap_content"

android:layout_weight="1"

android:text="清空" />

android:layout_width="match_parent"

android:layout_height="match_parent">

android:id="@+id/id_flowlayout"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

app:max_select="-1" />

tv.xml

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">

drawable下面创建

checked_bg.xml

android:width="1dp"

android:color="#dddddd" />

android:bottom="5dp"

android:left="14dp"

android:right="14dp"

android:top="5dp" />

normal_bg.xml

android:width="1dp"

android:color="#dddddd" />

android:bottom="5dp"

android:left="14dp"

android:right="14dp"

android:top="5dp" />

tag_bg.xml

text_color.xml

MainActivity

public class MainActivity extends AppCompatActivity {

private TagFlowLayout mFlowLayout;

private EditText editText;

private Button button;

private List strings;

String history="";

int a=0;

List 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(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

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 set = new ArraySet<>();

set.add(aa);

historylist.add(aa);

a++;

history+= aa+" ";

for (int i=0;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脚本之家。