这是一个令人头疼的问题......（至少对我而言）我有一个联系人列表，其中显示了我的 Db 中的联系人列表。当用户点击其中一个联系人时，就会出现一个编辑活动。这一切都按照目前的布局完美运行，但我需要让编辑活动在名字之前显示姓氏条目。考虑到所有字段都应该具有一对一的关系，我继续在编辑活动中将姓氏的 editText(XML) 移动到名字的上方，认为这应该由 EditText 的 id 引用。这样做之后，程序现在在姓氏字段中显示名字，反之亦然。我试过在模拟器上擦除用户数据，没有区别。我已经意识到这可能是其中之一 UH-DUH！输入问题，但如果有人能指出对我来说显而易见的问题，将不胜感激。显示的所有代码都处于 now-working 状态：
我已经删除了一些与我的问题无关的块。感谢任何为我看这个的人！肯
XML:
<EditText
android:id="@+id/contact_edit_first_name"
android:inputType="textPersonName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="@string/contact_edit_first_name"
android:imeOptions="actionNext"
android:background="@color/warn" >
</EditText>
<EditText
android:id="@+id/contact_edit_last_name"
android:inputType="textPersonName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="top"
android:hint="@string/contact_edit_last_name"
android:imeOptions="actionNext"
android:background="@color/warn" >
</EditText>
这是显示 listView 行的联系人活动，并调用 createContact 发送添加、编辑或删除行的意图。
public class ContactsActivity extends ListActivity implements
LoaderManager.LoaderCallbacks<Cursor> {
private SimpleCursorAdapter adapter;
/** Called when the activity is first created. */
@Override
public void onCreate //DO THE ON CREATE STUFF -removed
fillData();
registerForContextMenu(getListView());
Button add_contact = (Button) findViewById(R.id.add_contact_button);
add_contact.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
createContact();
}
});
}
// Create the options menu to INSERT from the XML file
// removed - not relevant
// return true for the menu to be displayed
}
// When the insert menu item is selected, call CreateContact
//Removed
createContact();
return true;
}
return super.onOptionsItemSelected(item);
}
private void createContact() {
Intent i = new Intent(this, ContactEditActivity.class);
startActivity(i);
}
//The onListItemClick sends a URI which flags the contactEditActivity
//that this is an edit rather than a new insert.
@Override
protected void onResume() {
super.onResume();
//Starts a new or restarts an existing Loader in this manager
getLoaderManager().restartLoader(0, null, this);
}
//The fillData method binds the simpleCursorAadapter to the listView.
private void fillData() {
//The desired columns to be bound:
String[] from = new String[] { ContactsDB.COLUMN_LAST_NAME, ContactsDB.COLUMN_FIRST_NAME };
//The XML views that the data will be bound to:
int[] to = new int[] {R.id.label2, R.id.label};
// The creation of a loader using the initLoader method call.
getLoaderManager().initLoader(0, null, this);
adapter = new SimpleCursorAdapter(this, R.layout.contact_row, null, from,
to, 0);
setListAdapter(adapter);
}
// Sort the names by last name, then by first name
String orderBy = ContactsDB.COLUMN_LAST_NAME + " COLLATE NOCASE ASC"
+ "," + ContactsDB.COLUMN_FIRST_NAME + " COLLATE NOCASE ASC" ;
// Creates a new loader after the initLoader () call
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
//ETC
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
adapter.swapCursor(data); //Call requires Min API 11
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
// swap the cursor adapter
}
最后，这是联系人编辑代码，这可能是我悲痛的根源……也许不是。可能是保存状态没有映射到ID？
@Override
protected void onCreate(Bundle bundle) {
super.onCreate(bundle);
setContentView(R.layout.activity_contact_edit);
Log.i(TAG, "INSIDE ONCREATE");
mCategory = (Spinner) findViewById(R.id.category);
mLastName = (EditText) findViewById(R.id.contact_edit_last_name);
mFirstName = (EditText) findViewById(R.id.contact_edit_first_name);
mHomePhone = (EditText) findViewById(R.id.contact_edit_home_phone);
mCellPhone = (EditText) findViewById(R.id.contact_edit_cell_phone);
//****************ECT. ETC.
//DECLARE THE BUTTONS AND SET THE DELETE ENABLED FALSE - REMOVED - NOT PERTINANT
Bundle extras = getIntent().getExtras();
// Check if the URI is from a new instance or a saved record
}
// Set the save button to check the required fields, save the contact and finish
saveButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
if (TextUtils.isEmpty(mLastName.getText().toString()) ||
TextUtils.isEmpty(mFirstName.getText().toString())) {
makeToast();
} else {
setResult(RESULT_OK);
finish();
}
}
});
// Set the delete button to delete the contact and finish - REMOVED - NOT PERTINANT
private void fillData(Uri uri) {
// QUERY PARAMETER projection - A list of which columns to return.
// Passing null will return all columns, which is inefficient (but used now!)
// null, null and null are: selection, selection args, and sort order for specific items
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
if (cursor != null) {
cursor.moveToFirst();
String category = cursor.getString(cursor
.getColumnIndexOrThrow(ContactsDB.COLUMN_CATEGORY));
for (int i = 0; i < mCategory.getCount(); i++) {
String s = (String) mCategory.getItemAtPosition(i);
Log.i("CATEGORY", s); ////////////////////////////////////////////
if (s.equalsIgnoreCase(category)) {
mCategory.setSelection(i);
}
};
mLastName.setText(cursor.getString(cursor
.getColumnIndexOrThrow(ContactsDB.COLUMN_LAST_NAME)));
mFirstName.setText(cursor.getString(cursor
.getColumnIndexOrThrow(ContactsDB.COLUMN_FIRST_NAME)));
mHomePhone.setText(cursor.getString(cursor
.getColumnIndexOrThrow(ContactsDB.COLUMN_PHONE_NUMBER)));
mCellPhone.setText(cursor.getString(cursor
.getColumnIndexOrThrow(ContactsDB.COLUMN_CELL_NUMBER)));
mWorkPhone.setText(cursor.getString(cursor
.getColumnIndexOrThrow(ContactsDB.COLUMN_WORK_NUMBER)));
mFax.setText(cursor.getString(cursor
//****************ECT. ETC.
//close the cursor
}
}
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
saveState();
outState.putParcelable(whateverContentProvider.CONTENT_ITEM_TYPE, contactUri);
}
@Override
protected void onPause() {
super.onPause();
saveState();
}
private void saveState() {
String category = (String) mCategory.getSelectedItem();
String someLAST = mLastName.getText().toString().valueOf(findViewById(R.id.contact_edit_last_name));
String lastName = mLastName.getText().toString();
String firstName = mFirstName.getText().toString();
String someFIRST = mFirstName.getText().toString().valueOf(findViewById(R.id.contact_edit_first_name));
String homePhone = mHomePhone.getText().toString();
String somePhone = mHomePhone.getText().toString().valueOf(findViewById(R.id.contact_edit_home_phone));
String cellPhone = mCellPhone.getText().toString();
String workPhone = mWorkPhone.getText().toString();
//****************ECT. ETC.
//Some logging I used to show that the first name field still came up first
//after changing the order of the editTexts.
Log.i("LAST NAME", lastName);
Log.i("SOME LAST", someLAST);
Log.i("FIRST NAME", firstName);
Log.i("SOME FIRST", someFIRST);
Log.i("Home Phone", homePhone);
Log.i("SOME PHONE", somePhone);
// Save if first name and last name are entered
// The program will save only last name when a user presses back button with text in last name
if (lastName.length() == 0 || firstName.length() == 0) {
return;
}
// ContentValues class is used to store a set of values that the contentResolver can process.
ContentValues values = new ContentValues();
values.put(ContactsDB.COLUMN_CATEGORY, category);
values.put(ContactsDB.COLUMN_LAST_NAME, lastName);//ANNIE
values.put(ContactsDB.COLUMN_FIRST_NAME, firstName);
values.put(ContactsDB.COLUMN_PHONE_NUMBER, homePhone);
//****************ECT. ETC.
if (contactUri == null) {
// Create a new contact
contactUri = getContentResolver().insert(whateverContentProvider.CONTENT_URI, values);
} else {
// Update an existing contact
getContentResolver().update(contactUri, values, null, null);
}
}
//MAKE A TOAST DOWN HERE - REMOVED - NOT PERTINANT
}