我在 android 开发中还是新手.. 我在我的应用程序上开发搜索功能时遇到问题.. 我使用本网站的代码 http://www.mysamplecode.com/2011/11/android-searchview-using-sqlite- fts3.html
我删除了一个我不想使用的特定代码..特别是“日期”幸运的是，它没有出错，它可以工作......但是当我尝试点击显示的列表视图时，我的模拟器给出了一个通知“不幸的是 TryandError 已停止”
当我检查logcat ..它显示...
at.com.example.tryanderror.SearchViewActivity$1.onClickItem(SearchViewActivity.java:137)
这是我从网站给出的原始示例中的代码，我拆分出来的 main.xml 变成了这 2 个 xml。
活动搜索视图.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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".SearchViewActivity" >
<LinearLayout android:id="@+id/leftLayout"
android:layout_width="match_parent" android:orientation="vertical"
android:layout_height="wrap_content" android:paddingBottom="50dp">
<SearchView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/search" />
<ListView android:layout_width="fill_parent" android:id="@+id/list"
android:layout_height="wrap_content" />
</LinearLayout>
右布局.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rightLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
</LinearLayout>
SearchViewActivity.java
package com.example.tryanderror;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
public class SearchViewActivity extends Activity implements SearchView.OnQueryTextListener,
SearchView.OnCloseListener {
private ListView mListView;
private SearchView searchView;
private CustomersDbAdapter mDbHelper;
private TextView customerText;
private TextView nameText;
private TextView addressText;
private TextView cityText;
private TextView stateText;
private TextView zipCodeText;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search_view);
searchView = (SearchView) findViewById(R.id.search);
searchView.setIconifiedByDefault(false);
searchView.setOnQueryTextListener(this);
searchView.setOnCloseListener(this);
mListView = (ListView) findViewById(R.id.list);
mDbHelper = new CustomersDbAdapter(this);
mDbHelper.open();
//Clean all Customers
mDbHelper.deleteAllCustomers();
//Add some Customer data as a sample
mDbHelper.createCustomer("PIZZA1", "Pizza Hut", "1107 West Adams Boulevard", "", "Los Angeles", "CA", "90007");
mDbHelper.createCustomer("PIZZA2", "Pizza Hut", "1562 West Pico Boulevard", "", "Los Angeles", "CA", "90015");
mDbHelper.createCustomer("PIZZA3", "Pizza Hut", "718 South Los Angeles Street", "", "Los Angeles", "CA", "90014");
mDbHelper.createCustomer("PIZZA4", "Pizza Hut", "2542 West Temple Street", "", "Los Angeles", "CA", "90026");
mDbHelper.createCustomer("PIZZA5", "Pizza Hut", "4329 North Figueroa Street", "", "Los Angeles", "CA", "90065");
mDbHelper.createCustomer("PIZZA6", "Pizza Hut", "4351 South Central Avenue", "", "Los Angeles", "CA", "90011");
mDbHelper.createCustomer("SUB1", "Subway", "975 West Jefferson", "", "Los Angeles", "CA", "90007");
mDbHelper.createCustomer("SUB2", "Subway", "2805 South Figueroa Street", "", "Los Angeles", "CA", "90007");
mDbHelper.createCustomer("SUB3", "Subway", "198 South Vermont Avenue", "", "Los Angeles", "CA", "90004");
mDbHelper.createCustomer("SUB4", "Subway", "504 West Olympic Boulevard", "", "Los Angeles", "CA", "90015");
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mDbHelper != null) {
mDbHelper.close();
}
}
public boolean onQueryTextChange(String newText) {
showResults(newText + "*");
return false;
}
public boolean onQueryTextSubmit(String query) {
showResults(query + "*");
return false;
}
public boolean onClose() {
showResults("");
return false;
}
private void showResults(String query) {
Cursor cursor = mDbHelper.searchCustomer((query != null ? query.toString() : "@@@@"));
if (cursor == null) {
//
} else {
// Specify the columns we want to display in the result
String[] from = new String[] {
CustomersDbAdapter.KEY_CUSTOMER,
CustomersDbAdapter.KEY_NAME,
CustomersDbAdapter.KEY_ADDRESS,
CustomersDbAdapter.KEY_CITY,
CustomersDbAdapter.KEY_STATE,
CustomersDbAdapter.KEY_ZIP};
// Specify the Corresponding layout elements where we want the columns to go
int[] to = new int[] { R.id.scustomer,
R.id.sname,
R.id.saddress,
R.id.scity,
R.id.sstate,
R.id.szipCode};
// Create a simple cursor adapter for the definitions and apply them to the ListView
SimpleCursorAdapter customers = new SimpleCursorAdapter(this,R.layout.customerresult, cursor, from, to);
mListView.setAdapter(customers);
// Define the on-click listener for the list items
mListView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Get the cursor, positioned to the corresponding row in the result set
Cursor cursor = (Cursor) mListView.getItemAtPosition(position);
// Get the state's capital from this row in the database.
String customer = cursor.getString(cursor.getColumnIndexOrThrow("customer"));
String name = cursor.getString(cursor.getColumnIndexOrThrow("name"));
String address = cursor.getString(cursor.getColumnIndexOrThrow("address"));
String city = cursor.getString(cursor.getColumnIndexOrThrow("city"));
String state = cursor.getString(cursor.getColumnIndexOrThrow("state"));
String zipCode = cursor.getString(cursor.getColumnIndexOrThrow("zipCode"));
//Check if the Layout already exists
LinearLayout customerLayout = (LinearLayout)findViewById(R.id.customerLayout);
if(customerLayout == null){
//Inflate the Customer Information View
LinearLayout mainLayout = (LinearLayout)findViewById(R.id.rightLayout);
View customerInfo = getLayoutInflater().inflate(R.layout.customerinfo, mainLayout, false);
mainLayout.addView(customerInfo);
}
//Get References to the TextViews
customerText = (TextView) findViewById(R.id.customer);
nameText = (TextView) findViewById(R.id.name);
addressText = (TextView) findViewById(R.id.address);
cityText = (TextView) findViewById(R.id.city);
stateText = (TextView) findViewById(R.id.state);
zipCodeText = (TextView) findViewById(R.id.zipCode);
// Update the parent class's TextView
customerText.setText(customer);
nameText.setText(name);
addressText.setText(address);
cityText.setText(city);
stateText.setText(state);
zipCodeText.setText(zipCode);
searchView.setQuery("",true);
}
});
}
}
}
我希望有人能帮我解决这个问题..拜托..谢谢..