本文详细介绍了短信应用的设计与实现过程，包括文件夹页面设置、文件夹详情页面展示、群组功能实现及搜索功能的开发。通过对不同页面的布局、交互逻辑及数据处理流程的深入解析，帮助读者理解整个短信应用的工作原理。
1.文件夹页面设置及查询各个箱子的个数
public class FolderUi extends ListActivity implements OnItemClickListener {
private ListView listView;
private String[] names = { "收件箱", "发件箱", "草稿箱", "已发送" };
private int[] iconIds = { R.drawable.a_f_inbox, R.drawable.a_f_outbox,
R.drawable.a_f_draft, R.drawable.a_f_sent };
private int[] counts = new int[4];//短信条数
private FolderAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
listView = getListView();
adapter = new FolderAdapter();
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
prepareData();
}
private void prepareData() {
MyQueryHandler handler = new MyQueryHandler(getContentResolver());
//根据点击的item分别查询不同的uri(收件箱...发件箱...)
for (int i = 0; i < counts.length; i++)
handler.startQuery(i, null, Tools.getUriFromIndex(i),
new String[] { " count(*) " }, null, null, null);
// select count(*) from table 查询个数
handler.setOnCursorChangedListener(new OnCursorChangedListener() {
@Override
public void onCursorChanged(int token, Object cookie, Cursor cursor) {
if (cursor.moveToFirst()) {
int count = cursor.getInt(0);// 因为数值只有一个所以不用while(cursor.movetoNext())
counts[token] = count;// token就是传入的i
adapter.notifyDataSetChanged();
}
}
});
}
class FolderAdapter extends BaseAdapter {
private View view;
@Override
public int getCount() {
return names.length;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
view = View.inflate(FolderUi.this, R.layout.list_item_folder,
null);
} else {
view = convertView;
}
ImageView icon = (ImageView) view.findViewById(R.id.iv_icon_folder);
TextView name = (TextView) view.findViewById(R.id.tv_name_folder);
TextView count = (TextView) view.findViewById(R.id.tv_count_folder);
icon.setBackgroundResource(iconIds[position]);
name.setText(names[position]);
count.setText("" + counts[position]);
if (position % 2 == 0) {
view.setBackgroundColor(Color.WHITE);
} else {
view.setBackgroundColor(Color.GRAY);
}
return view;
}
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Intent intent = new Intent(this, FolderDetail.class);
intent.putExtra("position", position);
startActivity(intent);
}
}2.文件夹详情页面设置
public class FolderDetail extends Activity implements OnClickListener {
private int position;
private folderListAdapter madapter;
private String[] projection = { "body", "_id", "address", "date" };
// 短信内容所在列的索引值 为 0
private final int INDEX_BODY = 0;
// 短信联系人电话所在列的索引值 为 2
private final int INDEX_ADDRESS = 2;
// 短信日期所在列的索引值 为 3
private final int INDEX_DATE = 3;
private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
position = getIntent().getIntExtra("position", 0);
setContentView(R.layout.activity_folder_detail);
findViewById(R.id.btn_send).setOnClickListener(this);
listView = (ListView) findViewById(R.id.lv_folder_detail);
madapter = new folderListAdapter(FolderDetail.this, null);
listView.setAdapter(madapter);
madapter.notifyDataSetChanged();
prepareData();
}
private void prepareData() {
MyQueryHandler handler = new MyQueryHandler(getContentResolver());
//根据点击的item查询不同的收件箱,发件箱
handler.startQuery(110, madapter, Tools.getUriFromIndex(position),
projection, null, null, "date desc");
//当完成查询之后,监听该事件
handler.setOnCursorChangedListener(new OnCursorChangedListener() {
@Override
public void onCursorChanged(int token, Object cookie, Cursor cursor) {
madapter.notifyDataSetChanged();
}
});
}
class folderListAdapter extends CursorAdapter {
private View view;
public folderListAdapter(Context context, Cursor c) {
super(context, c);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
view = View
.inflate(context, R.layout.list_item_folder_detail, null);
FolderDetailViewHolder vh = new FolderDetailViewHolder();
vh.title = (TextView) view.findViewById(R.id.tv_title_list_item);
vh.face = (ImageView) view.findViewById(R.id.iv_face_list_item);
vh.address = (TextView) view
.findViewById(R.id.tv_address_list_item);
vh.body = (TextView) view.findViewById(R.id.tv_body_list_item);
vh.date = (TextView) view.findViewById(R.id.tv_date_list_item);
view.setTag(vh);
return view;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
FolderDetailViewHolder vh = (FolderDetailViewHolder) view.getTag();
// 设置内容
vh.body.setText(cursor.getString(INDEX_BODY));
// 设置时间
long when = cursor.getLong(INDEX_DATE);
String dateStr;
if (DateUtils.isToday(when)) {
dateStr = DateFormat.getTimeFormat(context).format(when);
} else {
dateStr = DateFormat.getDateFormat(context).format(when);
}
vh.date.setText(dateStr);
// 设置联系人的名字
String number = cursor.getString(INDEX_ADDRESS);
String name = Tools.findNameByNumber(context, number);
if (name == null) {// 无此联系人
vh.address.setText(number);
} else {
vh.address.setText(name);
}
// 设置头像
int contactId = Tools.findIDByNumber(context, number);
if (contactId == -1) { // 无此联系人
vh.face.setBackgroundResource(R.drawable.ic_unknow_contact_picture);
} else {
Bitmap bitmap = Tools.getFaceById(context, "" + contactId);
if (bitmap == null) {// 联系人，无头像
vh.face.setBackgroundResource(R.drawable.ic_contact_picture);
} else {
vh.face.setBackgroundDrawable(new BitmapDrawable(bitmap));
}
}
//将日期一样的隐藏,只显示一个标题------(比较当前的和上一个的日期是否一样)
if (cursor.getPosition() != 0) {
cursor.moveToPosition(cursor.getPosition() - 1);// 移动到上一个
long lastwhen = cursor.getLong(INDEX_DATE);
String lastdateStr = null;
if (DateUtils.isToday(lastwhen)) {
lastdateStr = DateFormat.getTimeFormat(context).format(
lastwhen);
} else {
lastdateStr = DateFormat.getDateFormat(context).format(
lastwhen);
}
//比较当前和上一个日期是否一样，不一样就显示，否则隐藏
if (!dateStr.equals(lastdateStr)) {
vh.title.setVisibility(View.VISIBLE);
vh.title.setText(dateStr);
} else {
vh.title.setVisibility(View.GONE);
}
} else {//这是特殊item （0），因为无法和-1比较，cursor的-1行为null 第0个一定是显示的
long lastwhen = cursor.getLong(INDEX_DATE);
String lastdateStr = null;
if (DateUtils.isToday(lastwhen)) {
lastdateStr = DateFormat.getTimeFormat(context).format(
lastwhen);
} else {
lastdateStr = DateFormat.getDateFormat(context).format(
lastwhen);
}
vh.title.setVisibility(View.VISIBLE);
vh.title.setText(lastdateStr);
}
}
}
@Override
public void onClick(View v) {
Intent intent = new Intent(this,NewMessageUI.class);
startActivity(intent);
}
static class FolderDetailViewHolder {
public TextView title;
public ImageView face;
public TextView address;
public TextView body;
public TextView date;
}
}3.群组页面的设置
①.创建群组和会话id的关系表 (1.群组表:查找群组id可以获得群组名字 2.群组会话表:通过群组id的条件去查询每个群组里面的会话)
public class MySqliteHelper extends SQLiteOpenHelper {
public MySqliteHelper(Context context, String name, CursorFactory factory,
int version) {
super(context, name, null, version);
}
public static final String TAB_GROUPS = "groups";
public static final String TAB_THREAD_GROUPS = "thread_groups";
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("create table groups(_id integer primary " +
"key autoincrement, group_name varchar(20));");
db.execSQL("create table thread_groups(_id integer primary key autoincrement, " +
"group_id integer ,thread_id integer);");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}②创建单例表数据库和数据库的工具类
public class DBUtils {
private Context context;
private MySqliteHelper helper;
private Uri uri = Uri.parse("content://laoluo.com.cn");
private static DBUtils dbutils;
private DBUtils(Context context) {
this.context = context;
helper = new MySqliteHelper(context, "messageMan", null, 1);
}
public static synchronized DBUtils getInstance(Context context) {
if (dbutils == null) {
dbutils = new DBUtils(context);
}
return dbutils;
}
// 增加群组
public void createNewGroup(String name) {
SQLiteDatabase db = helper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("group_name", name);
db.insert(MySqliteHelper.TAB_GROUPS, "_id", values);
// 设置为null，cursor中有一个观察者监听
// 1.内容处理者发送通知
context.getContentResolver().notifyChange(uri, null);
}
// 查询所有群组
public Cursor getAllgroup() {
SQLiteDatabase db = helper.getReadableDatabase();
Cursor cursor = db.query(MySqliteHelper.TAB_GROUPS, null, null, null,
null, null, null);
// 2.cursor接收
cursor.setNotificationUri(context.getContentResolver(), uri);// 设置一个数据改变接收通知，接收这个uri的通知
return cursor;
}
// 根据id删除该群组
public void deleteGroupBy_id(int _id) {
SQLiteDatabase db = helper.getWritableDatabase();
db.delete(MySqliteHelper.TAB_GROUPS, " _id = " + _id, null);
// 1.内容处理者发送通知
context.getContentResolver().notifyChange(uri, null);
}
// 根据id 和 名字 更新群组
public void updateGroupNameBy_id(int _id, String name) {
SQLiteDatabase db = helper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("group_name", name);
db.update(MySqliteHelper.TAB_GROUPS, values, " _id = ?", new String[]{_id+""});
// 1.内容处理者发送通知
context.getContentResolver().notifyChange(uri, null);
}
//将会话id和群组id插入到数据库中
public void insertThradIdAndGroupId(int threadId, int groupId) {
SQLiteDatabase db = helper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("thread_id", threadId);
values.put("group_id", groupId);
db.insert(MySqliteHelper.TAB_THREAD_GROUPS, null, values);
}
//通过群组id查找该群组中所有的会话id
public Cursor getAllThreadIdByGroupId(int groupId) {
SQLiteDatabase db = helper.getReadableDatabase();
Cursor cursor = db.query(MySqliteHelper.TAB_THREAD_GROUPS, null, " group_id = "+groupId, null, null, null, null);
return cursor;
}
}③增加群组.更新群组和进入显示该群组的会话消息
public class GroupUi extends ListActivity implements OnItemLongClickListener,
OnItemClickListener {
private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
listView = getListView();
adapter = new GropListAdapter(this, null);
listView.setAdapter(adapter);
listView.setOnItemLongClickListener(this);
listView.setOnItemClickListener(this);
prepare();
}
private void prepare() {
DBUtils dbu = DBUtils.getInstance(GroupUi.this);
// 查询所有群组
Cursor cursor = dbu.getAllgroup();
// 将cursor改变为这个cursor
adapter.changeCursor(cursor);
}
class GropListAdapter extends CursorAdapter {
public GropListAdapter(Context context, Cursor c) {
super(context, c);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View view = View.inflate(context, R.layout.list_item_group, null);
TextView name = (TextView) view.findViewById(R.id.tv_name_group);
view.setTag(name);
return view;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
//获取群组名字
TextView name = (TextView) view.getTag();
name.setText(cursor.getString(cursor.getColumnIndex("group_name")));
}
}
public boolean onCreateOptionsMenu(Menu menu) {
// 将 资料ID对应的文件转换为 菜单条目 ，并添加至 menu 中
getMenuInflater().inflate(R.menu.activity_group, menu);
return true;
}
@Override
/**
* 1.响应菜单的点击事件
*/
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_new_group:
showCreateGroupDialog();
break;
}
return true;
}
private AlertDialog dialog;
private GropListAdapter adapter;
//2.创建群组的Dialog
private void showCreateGroupDialog() {
AlertDialog.Builder adb = new AlertDialog.Builder(this);
dialog = adb.create();
View view = View.inflate(this, R.layout.dialog_new_group, null);
final EditText etInputName = (EditText) view
.findViewById(R.id.et_input_new_group);
Button btnOk = (Button) view.findViewById(R.id.btn_ok);
btnOk.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String name = etInputName.getText().toString();
if (TextUtils.isEmpty(name)) {
Toast.makeText(GroupUi.this, "请输入群组名称", 0).show();
return;
}
// 3.将群组名称保存至数据库
DBUtils dbu = DBUtils.getInstance(GroupUi.this);
dbu.createNewGroup(name);
dialog.dismiss();
}
});
dialog.setView(view, 0, 0, 0, 0);// 左上右下的边距
dialog.show();
}
//点击item，根据群组id获取到该群组的会话id 再通过会话id去查找所有的会话消息
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Cursor cursor = adapter.getCursor();
cursor.moveToPosition(position);
int groupId = cursor.getInt(0);//群组的id
//通过群组的id获取到该群组中的所有会话id
DBUtils dbUtils = DBUtils.getInstance(this);
Cursor cursor2 = dbUtils.getAllThreadIdByGroupId(groupId);
if(cursor2.getCount()==0){
Toast.makeText(this, "该群组没有人，快增加点人气吧！！", Toast.LENGTH_SHORT).show();
}else{
// 如果有人的话，希望能过cursor2 拼凑出如： thread_id in (1,2);
String subSql = convertCursor2Str(cursor2);
Intent intent = new Intent(this,ConversationUi.class);
intent.putExtra("subSql", subSql);
startActivity(intent);
}
}
private String convertCursor2Str(Cursor cursor2) {
cursor2.moveToPosition(-1);
StringBuilder sb=new StringBuilder(" thread_id in ( ");
while(cursor2.moveToNext()){
int threadId = cursor2.getInt(cursor2.getColumnIndex("thread_id"));
sb.append(threadId+","); // thread_id in (1,
}
sb.replace(sb.lastIndexOf(","), sb.length(), ")");
return sb.toString();
}
// listVIew的长按事件
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view,
int position, long id) {
showEditGroupDialog(position);
return true;
}
private void showEditGroupDialog(final int position) {
AlertDialog.Builder adb = new AlertDialog.Builder(this);
String items[] = new String[] { "编辑", "删除" };
adb.setItems(items, new DialogInterface.OnClickListener() {
@Override
/**
* which 是点击的条目的位置
*/
public void onClick(DialogInterface dialog, int which) {
if (which == 0) { // “编辑”
showUpdateGroupDialog(position);
} else { // 删除
showConfirmDeleteDialog(position);
}
}
});
adb.show();
}
// 更新群组对话框
protected void showUpdateGroupDialog(final int position) {
AlertDialog.Builder adb = new AlertDialog.Builder(this);
dialog = adb.create();
View view = View.inflate(this, R.layout.dialog_new_group, null);
TextView title = (TextView) view.findViewById(R.id.tv_title_dialog);
title.setText("更新群组名称");
final EditText etInputName = (EditText) view
.findViewById(R.id.et_input_new_group);
Button btnOk = (Button) view.findViewById(R.id.btn_ok);
btnOk.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String name = etInputName.getText().toString();
if (TextUtils.isEmpty(name)) {
Toast.makeText(GroupUi.this, "请输入群组名称", 0).show();
return;
}
DBUtils dbu = DBUtils.getInstance(GroupUi.this);
// 将群组名称更新保存至数据库
Cursor cursor = adapter.getCursor();
cursor.moveToPosition(position);//确认一下
int _id = cursor.getInt(0);
dbu.updateGroupNameBy_id(_id,name);
dialog.dismiss();
}
});
dialog.setView(view, 0, 0, 0, 0);// 左上右下的边距
dialog.show();
}
//确认删除对话框
protected void showConfirmDeleteDialog(final int position) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("删除群组");
builder.setMessage("确定要删除这个群组吗");
builder.setNegativeButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Cursor cursor = adapter.getCursor();
cursor.moveToPosition(position);
int _id = cursor.getInt(0);//获得第0列的值，就是_id(总共两列。_id和group_name
DBUtils dbUtils = DBUtils.getInstance(GroupUi.this);
dbUtils.deleteGroupBy_id(_id);
}
});
builder.setPositiveButton("取消", null);
builder.show();
}
}④.长按ConversationUi中的item添加该信息到群组中
/**
* 响应listView条目的长按事件 保存该短信到群组中
*/
public boolean onItemLongClick(AdapterView<?> parent, View view,
int position, long id) {
if(isEditState){
// 如果是编辑状态，直接退出
return true;
}
//弹出群组
showSelectGroupDialog(position);
return true;
}
private void showSelectGroupDialog(final int position) {
final DBUtils dbu = DBUtils.getInstance(ConversationUi.this);
Cursor cursor = dbu.getAllgroup();//获得所有群组的cursor对象
String groupNames[] = new String[cursor.getCount()];
final int groupIds[] = new int[cursor.getCount()];
while(cursor.moveToNext()){
int groupId = cursor.getInt(0); // 获得群组ID
String groupName = cursor.getString(1); // 获得群组名称
//保存id和群组名字到数组中
groupNames[cursor.getPosition()] = groupName;
groupIds[cursor.getPosition()] = groupId;
}
cursor.close();
AlertDialog.Builder builder = new AlertDialog.Builder(ConversationUi.this);
builder.setTitle("选择群组");
builder.setItems(groupNames, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 点击的群组的ID = groupIds[which ]
int groupId = groupIds[which];
Cursor cursor2 = myadapter.getCursor();
cursor2.moveToPosition(position);
//获得会话id
int threadId = cursor2.getInt(MyConstants.INDEX_THREAD_ID);
//将会话id和群组id保存进 （群组和会话的关系表中)
dbu.insertThradIdAndGroupId(threadId,groupId);
}
});
builder.show();
}
⑤.点击群组,重新进入conversationUi,根据查询条件查询会话
//点击item，根据群组id获取到该群组的会话id 再通过会话id去查找所有的会话消息
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Cursor cursor = adapter.getCursor();
cursor.moveToPosition(position);
int groupId = cursor.getInt(0);//群组的id
//通过群组的id获取到该群组中的所有会话id
DBUtils dbUtils = DBUtils.getInstance(this);
Cursor cursor2 = dbUtils.getAllThreadIdByGroupId(groupId);
if(cursor2.getCount()==0){
Toast.makeText(this, "该群组没有人，快增加点人气吧！！", Toast.LENGTH_SHORT).show();
}else{
// 如果有人的话，希望能过cursor2 拼凑出如： thread_id in (1,2);
String subSql = convertCursor2Str(cursor2);
Intent intent = new Intent(this,ConversationUi.class);
intent.putExtra("subSql", subSql);
startActivity(intent);
}
}
private String convertCursor2Str(Cursor cursor2) {
cursor2.moveToPosition(-1);
StringBuilder sb=new StringBuilder(" thread_id in ( ");
while(cursor2.moveToNext()){
int threadId = cursor2.getInt(cursor2.getColumnIndex("thread_id"));
sb.append(threadId+","); // thread_id in (1,
}
sb.replace(sb.lastIndexOf(","), sb.length(), ")");
return sb.toString();
}//7.点击item，根据群组id获取到该群组的会话id 再通过会话id去查找所有的会话消息
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Cursor cursor = adapter.getCursor();
cursor.moveToPosition(position);
int groupId = cursor.getInt(0);//群组的id
//通过群组的id获取到该群组中的所有会话id
DBUtils dbUtils = DBUtils.getInstance(this);
Cursor cursor2 = dbUtils.getAllThreadIdByGroupId(groupId);
if(cursor2.getCount()==0){
Toast.makeText(this, "该群组没有人，快增加点人气吧！！", Toast.LENGTH_SHORT).show();
}else{
// 如果有人的话，希望能过cursor2 拼凑出如： thread_id in (1,2);
String subSql = convertCursor2Str(cursor2);
Intent intent = new Intent(this,ConversationUi.class);
intent.putExtra("subSql", subSql);
startActivity(intent);
}
}
<span style="white-space:pre"> </span>//根据查询条件查询<pre name="code" class="java"> String where = getIntent().getStringExtra("subSql");
// 123是编号 myadapter是一个对象
handler.startQuery(123, myadapter, MyConstants.URI_CONVERSATION,
MyConstants.projection, where, null, "date desc");4.搜索框的使用
①.设置xml文件
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/search_title"
android:hint="@string/search_hint" >
</searchable>②.设置SearchActivity
<activity
android:name="com.example.message.SearchActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.SEARCH" />//这是一个发送的消息
</intent-filter>
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchable" />
</activity>③.设置该搜索框放在哪里
(放在ConversationUi页面中）
<activity
android:name="com.example.message.ConversationUi"
android:label="@string/app_name" >
<meta-data android:name="android.app.default_searchable"
android:value="com.example.message.SearchActivity" />
</activity>当查询完之后就会跳到该SearchActivity中
④.配置SearchActivity
public class SearchActivity extends ListActivity {
private ListView listView;
private SearchListAdapter adapter;
private String[] projection = { "_id", "address", "body", "date" };
private final int INDEX_ADDRESS = 1;
private final int INDEX_BODY = 2;
private final int INDEX_DATE = 3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
listView = getListView();
// 通过intent 获得，在搜索框中输入的内容 ，系统固定格式
Intent intent = getIntent();
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
String query = intent.getStringExtra(SearchManager.QUERY);
System.out.println("query::" + query);
adapter = new SearchListAdapter(this, null);
listView.setAdapter(adapter);
doMySearch(query);
}
}
private void doMySearch(String query) {
MyQueryHandler myQueryHandler = new MyQueryHandler(getContentResolver());
//查询sms表中和框中内容匹配的信息内容
myQueryHandler.startQuery(99, adapter, MyConstants.URI_ALL, projection,
" body like '%" + query + "%'", null, "date desc");
}
class SearchListAdapter extends CursorAdapter {
public SearchListAdapter(Context context, Cursor c) {
super(context, c);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup arg2) {
View view = View.inflate(context, R.layout.list_item_search, null);
ViewHolder vh = new ViewHolder();
vh.face = (ImageView) view.findViewById(R.id.iv_face_list_item);
vh.address = (TextView) view
.findViewById(R.id.tv_address_list_item);
vh.body = (TextView) view.findViewById(R.id.tv_body_list_item);
vh.date = (TextView) view.findViewById(R.id.tv_date_list_item);
view.setTag(vh);
return view;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
ViewHolder vh = (ViewHolder) view.getTag();
//
vh.body.setText(cursor.getString(INDEX_BODY));
String dateStr = DateFormat.getDateFormat(context).format(
cursor.getLong(INDEX_DATE));
vh.date.setText(dateStr);
String number = cursor.getString(INDEX_ADDRESS);
String name = Tools.findNameByNumber(context, number);
if (name == null) {
vh.address.setText(number);
} else {
vh.address.setText(name);
}
int id = Tools.findIDByNumber(context, number);
if (id == -1) {
vh.face.setBackgroundResource(R.drawable.ic_unknow_contact_picture);
} else {
Bitmap bitmap = Tools.getFaceById(context, "" + id);
if (bitmap == null) {
vh.face.setBackgroundResource(R.drawable.ic_contact_picture);
} else {
vh.face.setBackgroundDrawable(new BitmapDrawable(bitmap));
}
}
}
}
class ViewHolder {
public ImageView face;
public TextView address;
public TextView body;
public TextView date;
}
}⑤.添加一个建议,当打字的时候,下面会有一个建议的下拉框
①.改变xml.增加权限和搜索匹配
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/search_title"
android:hint="@string/search_hint"
android:searchSuggestAuthority="com.example.message.provider.MySearchprovider"
android:searchSuggestSelection=" ?">
</searchable>②.设置一个搜索提供者
public class MySearchprovider extends SearchRecentSuggestionsProvider {
//权限设置
public final static String AUTHORITY = "com.example.message.provider.MySearchprovider";
//匹配模式 为数据库查询和两行数据
public final static int MODE = DATABASE_MODE_QUERIES | DATABASE_MODE_2LINES;
//换成系统可以知道的别名
private String[] mprojection = { "_id as " + BaseColumns._ID,
"address as " + SearchManager.SUGGEST_COLUMN_TEXT_1,
"body as " + SearchManager.SUGGEST_COLUMN_TEXT_2,
"body as " + SearchManager.SUGGEST_COLUMN_QUERY };//告诉系统这是我要查询的东西
//构造函数
public MySearchprovider() {
setupSuggestions(AUTHORITY, MODE);
}
//查询语句执行完之后,就会跳到SearchActivity
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
String query = selectionArgs[0];
System.out.println("qurey::" + query);// 就是输入框中的内容
Cursor cursor = getContext().getContentResolver().query(
MyConstants.URI_ALL, mprojection,
" body like '%" + query + "%'", null, null);
return cursor;
}
}
③.配置manifest文件
<provider android:name="com.example.message.provider.MySearchprovider"
android:authorities="com.example.message.provider.MySearchprovider" >
</provider>
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