我正在使用ListView
和CursorAdapter
来显示一些信息。根据信息类型,行是不同的,但实际上有些项目是正确的,有些是左侧的。
这是我的活动
package ;
import android.annotation.SuppressLint;
import android.app.ActionBar;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.BaseColumns;
import android.provider.ContactsContract;
import android.provider.ContactsContract.PhoneLookup;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.telephony.PhoneNumberUtils;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.QuickContactBadge;
public class ConversationActivity extends BaseActivity implements
OnClickListener, LoaderManager.LoaderCallbacks<Cursor> {
private static final String TAG = ConversationActivity.class
.getSimpleName();
Cursor cursor; // 1
ListView conversationList; // 2
Button sendButton;
EditText newMessageText;
QuickContactBadge badge;
static String ID;
ConversationReceiver conversationReceiver = new ConversationReceiver();
private static final int LOADER_ID = 0x02;
private ConversationAdapter adapter;
@SuppressLint("NewApi")
@Override
protected void onStart() {
super.onStart();
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
}
}
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.conversation);
getSupportLoaderManager().initLoader(LOADER_ID, null, this);
// Die Views suchen
conversationList = (ListView) findViewById(R.id.ConversationList);
sendButton = (Button) findViewById(R.id.Conv_buttonSendMessage);
newMessageText = (EditText) findViewById(R.id.Conv_newMessageText);
Intent intent = getIntent();
ID = intent.getStringExtra("ID");
sendButton.setOnClickListener(this);
try {
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
Log.d(TAG, "Erstelle ActionBar fuer ID: " + ID);
String[] projection = new String[] {
ContactsContract.PhoneLookup.DISPLAY_NAME,
ContactsContract.PhoneLookup.PHOTO_THUMBNAIL_URI };
ContentResolver resolver = getContentResolver();
String[] br_projection = new String[] { BaseColumns._ID,
"conv_type", "address", "Profile_ID" };
Cursor ConvCursor = resolver
.query(Uri
.parse("content://.../conversations"),
br_projection, BaseColumns._ID + " = ?",
new String[] { ID }, null);
ActionBar actionBar = getActionBar();
if (ConvCursor.moveToFirst()) {
String number = "";
number = ConvCursor.getString(ConvCursor
.getColumnIndexOrThrow("address"));
Log.v(TAG, "Nummer: " + number);
Uri contactUri = Uri.withAppendedPath(
PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number));
Cursor contactCursor = getContentResolver().query(
contactUri, projection, null, null, null);
Log.v(TAG, "contactCursor.moveToFirst");
if (contactCursor.moveToFirst()) {
// Get values from contacts database:
String ContactName = contactCursor
.getString(contactCursor
.getColumnIndex(ContactsContract.PhoneLookup.DISPLAY_NAME));
String ContactThumbnailString = contactCursor
.getString(contactCursor
.getColumnIndex(ContactsContract.PhoneLookup.PHOTO_THUMBNAIL_URI));
ImageView logo = (ImageView) findViewById(android.R.id.home);
if (ContactThumbnailString != null) {
Uri ContactThumbnailURI = Uri
.parse(ContactThumbnailString);
logo.setImageURI(ContactThumbnailURI);
}
actionBar.setTitle(ContactName);
} else {
actionBar.setTitle(R.string.ContactNoName);
}
actionBar
.setSubtitle(PhoneNumberUtils.formatNumber(number));
}
}
} catch (Exception e) {
Log.e(TAG, "ConvAct Header Info ", e);
}
adapter = new ConversationAdapter(this, cursor);
conversationList.setAdapter(adapter);
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
protected void onResume() {
super.onResume();
Log.d(TAG, "onResume");
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(conversationReceiver);
}
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
String[] projection = new String[] { BaseColumns._ID, "item_type",
"send", "serverid", "direction", "date", "content", "sender",
"Conv_ID" };
Intent intent = getIntent();
return new CursorLoader(
this,
Uri.parse("content://.../items"),
projection, "Conv_ID = ?", new String[] { intent
.getStringExtra("ID") }, "date ASC");
}
@SuppressLint("NewApi")
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
adapter.swapCursor(cursor);
}
@SuppressLint("NewApi")
public void onLoaderReset(Loader<Cursor> cursorLoader) {
adapter.swapCursor(null);
}
// Wird bei Klicks auf den Button aufgerufen //
public void onClick(View v) {
Log.d(TAG, "Neues Item fuer ID: "+ID);
ContentResolver resolver = getContentResolver();
Cursor convCursor = resolver
.query(Uri
.parse("content://.../conversations/"
+ ID), new String[] { "address" }, null, null,
null);
convCursor.moveToFirst();
ContentValues values = new ContentValues();
values.clear();
values.put("item_type", "tm");
values.put("direction", "out");
values.put("send", "0");
values.put("date", String.valueOf(System.currentTimeMillis()));
values.put("content", newMessageText.getText().toString());
values.put("sender",
convCursor.getString(convCursor.getColumnIndex("address")));
values.put("Conv_ID", ID);
resolver.insert(Uri
.parse("content://.../items"),
values);
newMessageText.setText("");
}
}
以下是我CursorAdapter
package ;
import android.annotation.SuppressLint;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.provider.ContactsContract;
import android.provider.ContactsContract.PhoneLookup;
import android.text.format.DateUtils;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import android.widget.QuickContactBadge;
import android.widget.TextView;
public class ConversationAdapter extends CursorAdapter {
private static final String TAG = ConversationAdapter.class.getSimpleName();
@SuppressWarnings("deprecation")
public ConversationAdapter(Context context, Cursor c) {
super(context, c);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
LayoutInflater inflater = LayoutInflater.from(context);
String item_direction = cursor.getString(cursor
.getColumnIndexOrThrow("direction"));
View v = null;
if (item_direction.equals("out")) {
v = inflater.inflate(R.layout.conversationrow_out, parent, false);
} else if (item_direction.equals("in")) {
v = inflater.inflate(R.layout.conversationrow_in, parent, false);
}
bindView(v, context, cursor);
return v;
}
@SuppressLint({ "InlinedApi", "NewApi" })
@Override
public void bindView(View row, Context context, Cursor cursor) {
String item_type = cursor.getString(cursor
.getColumnIndexOrThrow("item_type"));
Log.v(TAG, item_type);
Cursor contactCursor = null;
try {
TextView ConversationText = (TextView) row
.findViewById(R.id.ConversationText);
Log.v(TAG, "message selected");
// Definition
String[] projection;
String number, textContent = "";
Uri ThumbnailURI = null;
String ThumbnailString;
QuickContactBadge ConversationBadge = null;
Log.d(TAG,
"Nachricht mit Inhalt: "
+ cursor.getString(cursor
.getColumnIndexOrThrow("content"))
+ " in Richtung: "
+ cursor.getString(cursor
.getColumnIndexOrThrow("direction")));
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
projection = new String[] {
ContactsContract.PhoneLookup.DISPLAY_NAME,
ContactsContract.PhoneLookup.PHOTO_THUMBNAIL_URI };
ConversationBadge = (QuickContactBadge) row
.findViewById(R.id.ConversationBadge);
} else {
projection = new String[] { ContactsContract.PhoneLookup.DISPLAY_NAME };
}
Log.v(TAG, "Lese nun Nutzerdaten");
number = cursor.getString(cursor.getColumnIndexOrThrow("sender"));
Uri contactUri = Uri.withAppendedPath(
PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number));
Log.v(TAG, "Nutzerdaten-Query");
contactCursor = context.getContentResolver().query(contactUri,
projection, null, null, null);
if (contactCursor.moveToFirst()) {
String name = contactCursor
.getString(contactCursor
.getColumnIndex(ContactsContract.PhoneLookup.DISPLAY_NAME));
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
ConversationBadge.assignContactFromPhone(number, true);
ThumbnailString = contactCursor
.getString(contactCursor
.getColumnIndex(ContactsContract.PhoneLookup.PHOTO_THUMBNAIL_URI));
if (cursor.getString(
cursor.getColumnIndexOrThrow("direction")).equals(
"in")
&& ThumbnailString != null) {
ThumbnailURI = Uri.parse(ThumbnailString);
ConversationBadge.setImageURI(ThumbnailURI);
} else {
ConversationBadge.setImageToDefault();
}
}
// textContent = name+": ";
} else {
// textContent = number+": ";
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
ConversationBadge.setImageToDefault();
}
}
if (item_type.equals("tm")) {
textContent += (cursor.getString(cursor
.getColumnIndexOrThrow("content")));
}
ConversationText.setText(textContent);
TextView ConversationTime = (TextView) row
.findViewById(R.id.ConversationTime);
long timestamp = cursor.getLong(cursor.getColumnIndex("date"));
ConversationTime.setText(DateUtils
.getRelativeTimeSpanString(timestamp));
} catch (Exception e) {
Log.e(TAG, "bindView ", e);
} finally {
contactCursor.close();
}
}
}
当我打开Activity时,一切看起来都很好。插入消息显示左调整,外发调整右调整(基本)。当我有新消息时,我调用上面的代码来重新查询并更新列表。新项目的内容现在出现在我喜欢的bvottom上,但最后一项的布局似乎是最后一项。此新项目的布局显示在顶部。
我想发布图片,但我没有声望点。 :(
由于