FlowLayout流式布局实现搜索清空历史记录

compile project(\':flowlayout-lib\') 

<LinearLayout  ns:android=\"http://schemas.android.com/apk/res/android\" 
   ns:app=\"http://schemas.android.com/apk/res-auto\" 
   ns: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  ns: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> 

<?  version=\"1.0\" encoding=\"utf-8\"?> 
<shape  ns: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> 

<?  version=\"1.0\" encoding=\"utf-8\"?> 
<shape  ns: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> 

<?  version=\"1.0\" encoding=\"utf-8\"?> 
<selector  ns: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> 

<?  version=\"1.0\" encoding=\"utf-8\"?> 
<selector  ns: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.set Listener(new View. Listener() { 
      @Override 
      public void  (View view) { 
        history=\"\"; 
        historylist.clear(); 
        editor.clear().commit(); 
        //清空下面的 
        strings.clear(); 
        handler.sendEmptyMessageDelayed(1, 0); 
      } 
    }); 
 
 
    button.set Listener(new View. Listener() { 
      @RequiresApi(api = Build.VERSION_CODES.M) 
      @Override 
      public void  (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; 
      } 
    }); 
  } 
}