SearchView是android系统中内置的一个搜索框组件,可以很方便在添加在用户界面之上,但是也带来了一些问题,那就是searchview的UI是固定的,定制起来会很麻烦,如果对SearchView的要求比较高,完全可以采用button和EditText自己实现。这里先简单的说说SearchView的使用:
main.xml:
<LinearLayout xmlns:android=\"http://schemas.android.com/apk/res/android\" xmlns:tools=\"http://schemas.android.com/tools\" android:layout_width=\"match_parent\" android:layout_height=\"match_parent\" android:orientation=\"vertical\" tools:context=\".Main\" > <SearchView android:id=\"@+id/sv\" android:layout_width=\"wrap_content\" android:layout_height=\"wrap_content\" android:imeOptions=\"actionGo\" /> </LinearLayout>
在显示suggestion的时候会用到下面的布局文件:mytextview.xml
<?xml version=\"1.0\" encoding=\"utf-8\"?> <LinearLayout xmlns:android=\"http://schemas.android.com/apk/res/android\" android:layout_width=\"match_parent\" android:layout_height=\"50sp\" android:orientation=\"vertical\" > <TextView android:id=\"@+id/textview\" android:layout_width=\"match_parent\" android:layout_height=\"wrap_content\" android:gravity=\"center_vertical\" android:paddingLeft=\"5sp\" android:textSize=\"18sp\" /> </LinearLayout>
main.java:
package com.app.main; import java.lang.reflect.Field; import android.app.Activity; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.os.Bundle; import android.view.View; import android.widget.ImageView; import android.widget.ListView; import android.widget.SearchView; import android.widget.SearchView.OnQueryTextListener; import android.widget.SimpleCursorAdapter; import android.widget.Toast; public class Main extends Activity { SearchView sv = null; ListView lv = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); sv = (SearchView) this.findViewById(R.id.sv); sv.setIconifiedByDefault(false); sv.setSubmitButtonEnabled(true); sv.setQueryHint(\"查询\"); //通过反射,修改默认的样式,可以从android的search_view.xml中找到需要的组件 try { Field field = sv.getClass().getDeclaredField(\"mSubmitButton\"); field.setAccessible(true); ImageView iv = (ImageView) field.get(sv); iv.setImageDrawable(this.getResources().getDrawable( R.drawable.pointer)); } catch (Exception e) { e.printStackTrace(); } Cursor cursor = this.getTestCursor(); @SuppressWarnings(\"deprecation\") SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.mytextview, cursor, new String[] { \"tb_name\" }, new int[] { R.id.textview }); sv.setSuggestionsAdapter(adapter); sv.setOnQueryTextListener(new OnQueryTextListener() { @Override public boolean onQueryTextChange(String str) { return false; } @Override public boolean onQueryTextSubmit(String str) { Toast.makeText(Main.this, str, Toast.LENGTH_SHORT).show(); return false; } }); } //添加suggestion需要的数据 public Cursor getTestCursor() { SQLiteDatabase db = SQLiteDatabase.openOrCreateDatabase( this.getFilesDir() + \"/my.db3\", null); Cursor cursor = null; try { String insertSql = \"insert into tb_test values (null,?,?)\"; db.execSQL(insertSql, new Object[] { \"aa\", 1 }); db.execSQL(insertSql, new Object[] { \"ab\", 2 }); db.execSQL(insertSql, new Object[] { \"ac\", 3 }); db.execSQL(insertSql, new Object[] { \"ad\", 4 }); db.execSQL(insertSql, new Object[] { \"ae\", 5 }); String querySql = \"select * from tb_test\"; cursor = db.rawQuery(querySql, null); } catch (Exception e) { String sql = \"create table tb_test (_id integer primary key autoincrement,tb_name varchar(20),tb_age integer)\"; db.execSQL(sql); String insertSql = \"insert into tb_test values (null,?,?)\"; db.execSQL(insertSql, new Object[] { \"aa\", 1 }); db.execSQL(insertSql, new Object[] { \"ab\", 2 }); db.execSQL(insertSql, new Object[] { \"ac\", 3 }); db.execSQL(insertSql, new Object[] { \"ad\", 4 }); db.execSQL(insertSql, new Object[] { \"ae\", 5 }); String querySql = \"select * from tb_test\"; cursor = db.rawQuery(querySql, null); } return cursor; } }
实现的效果如下:
以上就是搜索框组件SearchView的基本使用方法,希望能给大家一个参考,也希望大家多多支持phpstudy。
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