FlowLayout流式布局实现搜索清空历史记录

compile project(':flowlayout-lib') 

<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  

<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  

<?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  

<?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  

<?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  

<?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  

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; 
} 
}); 
} 
}