Android实现搜索功能并本地保存搜索历史记录

MyListView.java

package com.cwvs.microlife;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ListView;

public class MyListView extends ListView {
  public MyListView(Context context) {
    super(context);
  }

  public MyListView(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public MyListView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
  }

  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
        MeasureSpec.AT_MOST);
    super.onMeasure(widthMeasureSpec, expandSpec);
  }

}

activity_main.xml

<LinearLayout xmlns:android="http://www.easck.com/apk/res/android"
  xmlns:tools="http://www.easck.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:focusableInTouchMode="true"
  android:orientation="vertical"
  tools:context="${relativePackage}.${activityClass}">

  <LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="50dp"
    android:background="#E54141"
    android:orientation="horizontal"
    android:paddingRight="16dp">

    <ImageView
      android:layout_width="45dp"
      android:layout_height="45dp"
      android:layout_gravity="center_vertical"
      android:padding="10dp"
      android:src="@drawable/back" />

    <EditText
      android:id="@+id/et_search"
      android:layout_width="0dp"
      android:layout_height="match_parent"
      android:layout_weight="1"
      android:background="@null"
      android:drawableLeft="@drawable/search"
      android:drawablePadding="8dp"
      android:gravity="start|center_vertical"
      android:hint="输入查询的关键字"
      android:imeOptions="actionSearch"
      android:singleLine="true"
      android:textColor="@android:color/white"
      android:textSize="16sp" />

  </LinearLayout>


  <ScrollView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:orientation="vertical">

      <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:paddingLeft="20dp"

        >

        <TextView
          android:id="@+id/tv_tip"
          android:layout_width="match_parent"
          android:layout_height="50dp"
          android:gravity="left|center_vertical"
          android:text="搜索历史" />

        <View
          android:layout_width="match_parent"
          android:layout_height="1dp"
          android:background="#EEEEEE"></View>

        <com.cwvs.microlife.MyListView
          android:id="@+id/listView"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"></com.cwvs.microlife.MyListView>


      </LinearLayout>

      <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#EEEEEE"></View>

      <TextView
        android:id="@+id/tv_clear"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:background="#F6F6F6"
        android:gravity="center"
        android:text="清除搜索历史" />

      <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginBottom="20dp"
        android:background="#EEEEEE"></View>
    </LinearLayout>

  </ScrollView>
</LinearLayout>
								 
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