我想知道为什么我的列表视图在点击＆＃34;更多＆＃34;后不显示我的卡路里燃烧历史记录。
BurnDatabaseHelper.java：
public class BurnDatabaseHelper extends SQLiteOpenHelper {
// Calories Burned
public static final String KEY_CALORIES_BURN_ID = "_id";
public static final String KEY_CALORIES_OUT_DATE = "calories_out_date";
public static final String KEY_CALORIES_HOW_LONG = "calories_how_long";
public static final String KEY_PACE = "pace";
public static final String KEY_CALORIES_BURN = "calories_burn";
public static final String KEY_CALORIES_BURN_QUICK = "calories_burn_quick";
private static final String DATABASE_NAME = "leazy_calIntake.db";
private static final String TABLE_CALORIES_BURN = "burn";
private static final int DATABASE_VERSION = 1;
public BurnDatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL(" DROP TABLE IF EXISTS " + TABLE_CALORIES_BURN);
onCreate(db);
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
String DATABASE_CREATE_CALORIES_BURN = "CREATE TABLE "
+ TABLE_CALORIES_BURN + " (" //
+ KEY_CALORIES_BURN_ID + " integer primary key autoincrement,"//
+ KEY_CALORIES_OUT_DATE + " long"//
+ KEY_CALORIES_HOW_LONG + " integer,"//
+ KEY_PACE + " integer,"//
+ KEY_CALORIES_BURN + " integer," //
+ KEY_CALORIES_BURN_QUICK + " integer" //
+ " );";
db.execSQL(DATABASE_CREATE_CALORIES_BURN);
}
public void insertBurnedCalories(BurnedCalData burnData) {
ContentValues values = new ContentValues();
values.put(KEY_CALORIES_OUT_DATE, burnData.getCalOutDate());
Log.d("dbBurn", "date burn " + burnData.getCalOutDate());
values.put(KEY_CALORIES_HOW_LONG, burnData.getHowLong());
Log.d("dbBurn", "db how long= " + burnData.getHowLong());
values.put(KEY_PACE, burnData.getPace());
Log.d("dbBurn", "db pace= " + burnData.getPace());
values.put(KEY_CALORIES_BURN, burnData.getCaloriesBurn());
Log.d("dbBurn", "db BURNed calories= " + burnData.getCaloriesBurn());
values.put(KEY_CALORIES_BURN_QUICK, burnData.getCaloriesQuickBurn());
Log.d("dbBurn", "db quick BURNed calories= " + burnData.getCaloriesQuickBurn());
SQLiteDatabase db = this.getWritableDatabase();
db.insert(TABLE_CALORIES_BURN, null, values);
db.close();
}
public Cursor getAllBurnCaloriesDatas() {
// List<Data> historyDataList= new ArrayList<Data>();
String selectQuery = "SELECT * FROM " + TABLE_CALORIES_BURN;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
String[] columnName = cursor.getColumnNames();
for (String string : columnName) {
Log.i("column", string);
}
return cursor;
}
}
在这里，我想请求帮助的第二个问题是我的Activity调用了MoreBurnFragment.java：
MoreBurnActivity.java：
public class MoreBurnActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.frame);
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(false);
if (savedInstanceState == null) {
MoreBurnFragment moreburnfragment = new MoreBurnFragment();
Bundle extra = getIntent().getExtras();
moreburnfragment.setArguments(extra);
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction().add(
R.id.fragment_container, moreburnfragment);
ft.commit();
}
}
}
MoreBurnFragment.java：
public class MoreBurnFragment extends Fragment{
private MoreBurnAdapter adapter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View v = inflater.inflate(R.layout.fragment_more_burn, container, false);
((ActionBarActivity)getActivity()).getSupportActionBar();
ListView mListView = (ListView) v.findViewById(R.id.listView_more_burn);
BurnDatabaseHelper db = new BurnDatabaseHelper(getActivity());
Cursor cursor = db.getAllBurnCaloriesDatas();
if (cursor != null) {
// adapter context
adapter = new MoreBurnAdapter(getActivity(), cursor);
}
//
mListView.setAdapter(adapter);
return v;
}
}
最后我的适配器，MoreBurnAdapter.java：
public class MoreBurnAdapter extends CursorAdapter {
public MoreBurnAdapter(Context context, Cursor cursor) {
super(context, cursor, true);
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
// TODO Auto-generated method stub
long date = cursor.getLong(cursor.getColumnIndexOrThrow(BurnDatabaseHelper.KEY_CALORIES_OUT_DATE));
Log.d("burnMore","date="+ date);
int duration = cursor.getInt(cursor.getColumnIndexOrThrow(BurnDatabaseHelper.KEY_CALORIES_HOW_LONG));
int pace = cursor.getInt(cursor.getColumnIndexOrThrow(BurnDatabaseHelper.KEY_PACE));
int calBurn = cursor.getInt(cursor.getColumnIndexOrThrow(BurnDatabaseHelper.KEY_CALORIES_BURN));
int quickBurn = cursor.getInt(cursor.getColumnIndexOrThrow(BurnDatabaseHelper.KEY_CALORIES_BURN_QUICK));
int total = calBurn + quickBurn;
ViewHolder history_holder = (ViewHolder) view.getTag();
Calendar rightNow = Calendar.getInstance();//returns a calendar, is an object/instance created with a Calendar class
rightNow.setTimeInMillis(date); //accessing rightNow class, set it to date(long).
SimpleDateFormat format = new SimpleDateFormat("d/MM/yyyy h:mm a", Locale.getDefault());
String calBurnDate = format.format(rightNow.getTime());//return a date in string
history_holder.datetime.setText(String.valueOf(calBurnDate));
history_holder.duration.setText("Walking Duration : "+duration);
history_holder.pace.setText("Pace: "+pace);
history_holder.burn.setText("Calories burned: "+calBurn);
history_holder.quick_burn.setText("Quick Burned: "+quickBurn);
history_holder.total.setText("Total: "+total);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = LayoutInflater.from(mContext);
View view = inflater.inflate(R.layout.cal_out_history_row, parent, false);
ViewHolder holder = new ViewHolder();
holder.datetime = (TextView) view.findViewById(R.id.textView_datetime);
holder.duration = (TextView) view.findViewById(R.id.textView_walkhowlong);
holder.pace = (TextView) view.findViewById(R.id.textView_pace);
holder.burn = (TextView) view.findViewById(R.id.textView_burn);
holder.quick_burn = (TextView) view.findViewById(R.id.textView_quick_burn);
holder.total = (TextView) view.findViewById(R.id.textView_totalburn);
return view;
}
private class ViewHolder {
TextView datetime, duration, pace, burn, quick_burn, total ;
}
}
请帮忙。数据未显示，未显示列表视图。百万提前感谢。