文件夹页面
布局只有一个listview，可以继承listactivity，这样少写一个布局文件
tool:
代码语言：javascript复制 * @param index 箱子的索引值
* @return
* 对应的uri 或null
*/
public static Uri getUriFromIndex(int index){
switch (index) {
case 0:
return MyConstants.URI_INBOX;
case 1:
return MyConstants.URI_OUTBOX;
case 2:
return MyConstants.URI_DRAFT;
case 3:
return MyConstants.URI_SENT;
}
return null;
}FolderUI :可以用%来改变条目的颜色
代码语言：javascript复制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];
public Context ctx;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ctx = this;
listView = getListView();
adapter = new FolderListAdapter();
listView.setAdapter(adapter);
prepareData();
listView.setOnItemClickListener(this);
}
private void prepareData() {
MyQueryHandler myQueryHandler = new MyQueryHandler(getContentResolver());
for (int i = 0; i <4; i ) {
myQueryHandler.startQuery(i, null, Tools.getUriFromIndex(i), new String[]{" count(*) "}, null, null, null);
}
myQueryHandler.setOnCursorChangedListener(new MyQueryHandler.IOnCursorChangedListener() {
@Override
public void onCursorChanged(int token, Object cookie, Cursor cursor) {
//移动至第一行
cursor.moveToFirst();
// 获得短信的个数
int count = cursor.getInt(0); // 仅查询 短信的条数，仅返回一列
// 以 token 为counts的下标，存短信个数
counts[token] = count;
//刷新listView
adapter.notifyDataSetChanged();
}
});
}
private FolderListAdapter adapter;
class FolderListAdapter extends BaseAdapter{
@Override
public int getCount() {
return names.length;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
if(convertView == null){
view = View.inflate(ctx, 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]);
// 改变item的背景
if(position%2 == 0){
view.setBackgroundColor(Color.WHITE);
}else{
view.setBackgroundColor(Color.GRAY);
}
return view;
}
}
@Override
/**
* 响应listview 条目点击事件
*/
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Intent intent = new Intent(this,FolderDetail.class);
intent.putExtra("position", position);
startActivity(intent);
}
}文件夹详情页：listview的条目都带着上面的一条的，解决方法
- 每个条目判断和上一个条目是否是同一天，不是显示，是隐藏，但是会不停的判读
- 在获取日期信息的时候保存到集合，不是同一天就保存，用第二种，缺点一次性全部取出效率不高
public class FolderDetail extends Activity implements OnClickListener{
private ListView listView;
/**
* 在文件夹页面，点击listView的位置
*/
private int position;
@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);
adapter = new FolderDetailListAdapter(this, null);
listView.setAdapter(adapter);
showPositionSet = new HashSet<Integer>();
prepareData();
}
/**
* 要查询的列
*/
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 3
*/
private final int INDEX_ADDRESS = 2;
/**
* 短信日期所在列的索引值 为 4
*/
private final int INDEX_DATE = 3;
private void prepareData() {
MyQueryHandler myQueryHandler =new MyQueryHandler(getContentResolver());
myQueryHandler.startQuery(99, adapter, Tools.getUriFromIndex(position),
projection, null, null, " date desc");
myQueryHandler.setOnCursorChangedListener(new MyQueryHandler.IOnCursorChangedListener() {
@Override
public void onCursorChanged(int token, Object cookie, Cursor cursor) {
//遍历curosr 将需要显示标题的条目的位置，保存在 showPositionSet
cursor.moveToPosition(-1);// 将cursor 移动到-1 的位置，方便遍历cursor
showPositionSet.clear(); // 清空集合
long lastDay=0;
long thisDay=0;
while(cursor.moveToNext()){
thisDay=cursor.getLong(INDEX_DATE);
if(!isSameToday(lastDay, thisDay)){ // 如果二个时间表示的不是同一天
// 将当前cursor 的行数，保存至集合
showPositionSet.add(cursor.getPosition());
}
lastDay = thisDay;
}
// 刷新listView
adapter.notifyDataSetChanged();
}
});
}
/**
* @return true 如果 二人长型数字，表示的是同一天
*/
public boolean isSameToday(long lastDay,long thisDay) {
Time time = new Time();
time.set(lastDay);
int thenYear = time.year;
int thenMonth = time.month;
int thenMonthDay = time.monthDay;
time.set(thisDay);
return (thenYear == time.year)
&& (thenMonth == time.month)
&& (thenMonthDay == time.monthDay);
}
/**
* 应该显示标题的位置的集合
*/
private HashSet<Integer> showPositionSet;
private FolderDetailListAdapter adapter ;
class FolderDetailListAdapter extends CursorAdapter{
public FolderDetailListAdapter(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_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();
//TODO
//设置短信内容
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
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));
}
}
// 设置标题
if(showPositionSet.contains(cursor.getPosition())){ // 如果集合中包含此行，那么，就显示标题 ，
vh.title.setText(DateFormat.getDateFormat(context).format(when));
vh.title.setVisibility(View.VISIBLE);
}else{
// 否则，就隐藏标题
vh.title.setVisibility(View.GONE);
}
}
}
class FolderDetailViewHolder{
public TextView title;
public ImageView face;
public TextView address;
public TextView body;
public TextView date;
}
@Override
/**
* 响应新建信息的点击事件
*/
public void onClick(View v) {
Intent intent = new Intent(this,NewMessageUI.class);
startActivity(intent);
}
}
