Android EditText实现关键词批量搜索示例

今天在项目中用到了用到了一种特殊的EditText，当用户在EditText中输入内容，点击搜索按钮的时候，输入的内容能够高亮，然后添加到输入的容器中。删除的时候，能够将容器中的关键词逐一删除。附上代码：

SearchEditText.java

package com.jackie.searchresultedittext; 

import android.content.Context;
import android.graphics.Color;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView; 

/**
 * Created by Jackie on 2017/2/21.
 * 用于搜索的EditText
 */
public class SearchEditText extends RelativeLayout {
  private Context mContext;
  private LayoutInflater mInflater;
  private View mView;
  private LinearLayout mContainer;
  private EditText mEditText = null; 

  public SearchEditText(Context context) {
    this(context, null);
  } 

  public SearchEditText(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
  } 

  public SearchEditText(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    init(context);
  } 

  private OnSearchChangeListener mSearchChangeListener; 

  public interface OnSearchChangeListener {
    void searchChange(String s);
    void removeView(int position);
  } 

  public void setOnSearchChangeListener(OnSearchChangeListener searchChangeListener) {
    mSearchChangeListener = searchChangeListener;
  } 

  private void init(Context context) {
    mContext = context;
    mInflater = LayoutInflater.from(mContext);
    mView = mInflater.inflate(R.layout.search_edittext_layout, null);
    LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
    params.leftMargin = 15;
    params.rightMargin = 15;
    addView(mView, params); 

    mContainer = (LinearLayout) mView.findViewById(R.id.layout);
    mEditText = (EditText) mView.findViewById(R.id.edittext);
    mEditText.setOnKeyListener(new OnKeyListener() {
      @Override
      public boolean onKey(View v, int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_DEL) {
          if (isNotFastClick()) {
            if (mEditText.getText().toString().length() > 0) {
              String str = mEditText.getText().toString();
              str = str.substring(0, str.length() - 1);
              mEditText.setText(str);
              mEditText.setSelection(str.length());
            } else {
              if (mContainer.getChildCount() > 0) {
                if (mSearchChangeListener != null) {
                  mSearchChangeListener.removeView(mContainer.getChildCount() - 1);
                } 

                mContainer.removeViewAt(mContainer.getChildCount() - 1);
              }
            }
          }
        } 

        return true;
      }
    }); 

    mEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
      @Override
      public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
        if (actionId == EditorInfo.IME_ACTION_SEARCH) { 

          if (mEditText.getText().toString().trim().equals("")) {
            return true;
          } 

          TextView textView = new TextView(mContext);
          textView.setText(mEditText.getText().toString().trim());
          textView.setTextSize(14);
          textView.setTextColor(Color.parseColor("#dfe0e0"));
          textView.setPadding(10, 0, 10, 0);
          textView.setBackgroundResource(R.drawable.shape_edittext_round_bg);
          textView.setGravity(Gravity.CENTER);
          LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
          params.leftMargin = 10;
          textView.setLayoutParams(params); 

          if (mSearchChangeListener != null) {
            mSearchChangeListener.searchChange(mEditText.getText().toString().trim());
          } 

          mEditText.setText("");
          mContainer.addView(textView);
        } 

        return true;
      }
    });
  } 

  public EditText getEditText() {
    return mEditText;
  }
  public LinearLayout getContainer() {
    return mContainer;
  } 

  long lastClickTime = 0; 

  public boolean isNotFastClick() {
    long time = System.currentTimeMillis();
    if (time - lastClickTime >= 300) {
      lastClickTime = time;
      return true;
    } else {
      return false;
    }
  }
} 

search_edittext_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<HorizontalScrollView
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:scrollbars="none"
  android:fillViewport="true"
  >
  <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="33dp"
    android:orientation="horizontal"> 

    <LinearLayout
      android:id="@+id/layout"
      android:layout_width="wrap_content"
      android:layout_height="match_parent"
      android:orientation="horizontal"
      android:gravity="center_vertical"
      android:layout_gravity="center_vertical" /> 

    <EditText
      android:gravity="center_vertical"
      android:layout_gravity="center_vertical"
      android:id="@+id/edittext"
      android:layout_width="wrap_content"
      android:layout_height="match_parent"
      android:background="@null"
      android:textSize="16dp"
      android:textColor="#dfe0e0"
      android:layout_weight="1"
      android:minWidth="50dp"
      android:imeOptions="actionSearch"
      android:singleLine="true"
      android:layout_marginLeft="10dp"/>
  </LinearLayout>
</HorizontalScrollView> 

shape_edittext_round_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
  android:shape="rectangle">
  <solid android:color="#666666" />
  <corners android:radius="10dp"/>
</shape> 

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