Android 通过对话框将项添加到listview
我正在使用一个自定义的listview，我想将它添加到我的listview中。但它似乎跳过了添加项目的所有代码。有人能告诉我如何调整我的代码来实现这一点吗 先谢谢你 这是我调用自定义对话框的主要活动Android 通过对话框将项添加到listview,android,Android,我正在使用一个自定义的listview，我想将它添加到我的listview中。但它似乎跳过了添加项目的所有代码。有人能告诉我如何调整我的代码来实现这一点吗 先谢谢你 这是我调用自定义对话框的主要活动 public class MainActivity extends ActionBarActivity { TextView threadId; ArrayList<MessageItem> items = new ArrayList<MessageItem>
public class MainActivity extends ActionBarActivity {
TextView threadId;
ArrayList<MessageItem> items = new ArrayList<MessageItem>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button newMessage = (Button) findViewById(R.id.new_message_button);
final Context context = this;
final ListView listView = (ListView) this.findViewById(R.id.messagingListView);
final ActivityAdapter itemAdapter = new ActivityAdapter(getApplicationContext(), this.MessageFeedData());
listView.setAdapter(itemAdapter);
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
listView.getAdapter().getItem(position);
MessageItem itemAtPos = (MessageItem) parent.getItemAtPosition(position);
Intent intent = new Intent(MainActivity.this, ConversationView.class);
intent.putExtra("threadId", String.valueOf(itemAtPos.ThreadId));
startActivity(intent);
}
});
newMessage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// custom dialog
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.write_message_layout);
dialog.setTitle("Title...");
// set the custom dialog components - text, image and button
final Button post_button = (Button) dialog.findViewById(R.id.button_post);
final EditText new_write_message = (EditText) dialog.findViewById(R.id.messge_msg);
final EditText to_message = (EditText) dialog.findViewById(R.id.to_newmsg);
post_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
items.add(new MessageItem(5458, to_message.getText().toString(), "imh", DateTime.now(), new_write_message.getText().toString()));
itemAdapter.notifyDataSetChanged();
if (v.getId() == R.id.button_post);
to_message.setText("");
new_write_message.setText("");
}
});
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(MainActivity.this, "Clicked", Toast.LENGTH_LONG)
.show();
}
});
dialog.show();
}
});
}
public ArrayList<MessageItem> MessageFeedData() {
ArrayList<MessageItem> items = new ArrayList<MessageItem>();
//recieved_item_click_actions fields
items.add(new MessageItem(1, "Bob Doe", "image", DateTime.now(), "Hello how are you?"));
items.add(new MessageItem(200, "Simon Pink", "image", DateTime.now(), "Hello what are you doing"));
return items;
}
class ActivityFeedTask extends AsyncTask<Integer, Void, Void> {
ArrayList<MessageItem> recentTracks;
@Override
protected Void doInBackground(Integer... page) {
try {
recentTracks = new ArrayList<MessageItem>();
Thread.sleep(3000);
MessageItem data = null;
for (int i = 0; i < 10; i++) {
recentTracks.add(data);
}
} catch (Exception e) {
}
return null;
}
}
public class ActivityAdapter extends ArrayAdapter<MessageItem> {
private final Context context;
private final ArrayList<MessageItem> items;
//private int currentPage = 0;
public ActivityAdapter(Context context, ArrayList<MessageItem> recentTrackArrayList) {
super(context, 0, recentTrackArrayList);
this.context = context;
this.items = recentTrackArrayList;
}
public View getView(int position, View convertView, ViewGroup parent) {
View rowView;
{
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = getLayoutInflater().inflate
(R.layout.message_list_item, parent, false);
rowView = convertView;
TextView comment2 = (TextView) rowView
.findViewById(R.id.messaging_username);
comment2.setText(items.get(position).Username);
ImageView comment3 = (ImageView) rowView
.findViewById(R.id.messaging_photo);
if (items.get(position).Image == null) {
comment3.setImageResource(R.drawable.ic_launcher);
}
TextView comment4 = (TextView) rowView
.findViewById(R.id.messaging_date);
comment4.setText(items.get(position).DateTimeStamp.toString());
TextView comment5 = (TextView) rowView
.findViewById(R.id.messaging_string);
comment5.setText(items.get(position).MessageString);
}
return convertView;
}
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<EditText
android:id="@+id/to_newmsg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="TO" />
<EditText
android:id="@+id/messge_msg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/to_newmsg"
android:text="MESSAGE" />
<Button
android:id="@+id/button_post"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/messge_msg"
android:text="Send" />
</RelativeLayout>
公共类MainActivity扩展了ActionBarActivity{
TextView线程ID；
ArrayList items=新建ArrayList（）；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
按钮newMessage=（按钮）findViewById（R.id.new\u message\u按钮）；
最终上下文=此；
最终ListView ListView=（ListView）this.findViewById（R.id.messagingListView）；
final ActivityAdapter itemAdapter=新的ActivityAdapter（getApplicationContext（），this.MessageFeedData（））；
setAdapter（itemAdapter）；
setTextFilterEnabled（true）；
setOnItemClickListener（新的AdapterView.OnItemClickListener（）{
public void onItemClick（AdapterView父级、视图、，
内部位置，长id）{
listView.getAdapter（）.getItem（位置）；
MessageItem itemAtPos=（MessageItem）parent.getItemAtPosition（position）；
意向意向=新意向（MainActivity.this、ConversationView.class）；
intent.putExtra（“threadId”，String.valueOf（itemAtPos.threadId））；
星触觉（意向）；
}
});
newMessage.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
//自定义对话框
最终对话框=新对话框（上下文）；
setContentView（R.layout.write_message_layout）；
对话框。设置标题（“标题…”）；
//设置自定义对话框组件-文本、图像和按钮
final Button post\u Button=（按钮）dialog.findviewbyd（R.id.Button\u post）；
final EditText new_write_message=（EditText）dialog.findviewbyd（R.id.messge_msg）；
final EditText to_message=（EditText）dialog.findViewById（R.id.to_newmsg）；
post_按钮.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
添加（新的MessageItem（5458，to_message.getText（）.toString（），“imh”，DateTime.now（），new_write_message.getText（）.toString（））；
itemAdapter.notifyDataSetChanged（）；
如果（v.getId（）==R.id.button\u post）；
to_message.setText（“”）；
新建写入消息。setText（“”）；
}
});
setOnItemClickListener（新的AdapterView.OnItemClickListener（）{
@凌驾
public void onItemClick（AdapterView父对象、视图、整型位置、长id）{
Toast.makeText（MainActivity.this，“单击”，Toast.LENGTH\u LONG）
.show（）；
}
});
dialog.show（）；
}
});
}
公共ArrayList MessageFeedData（）{
ArrayList items=新建ArrayList（）；
//已接收\u项目\u单击\u操作字段
添加（新消息项（1，“Bob Doe”，“image”，DateTime.now（），“你好吗？”）；
添加（新的MessageItem（200，“Simon Pink”，“image”，DateTime.now（），“Hello你在做什么”）；
退货项目；
}
类ActivityFeedTask扩展了AsyncTask{
ArrayList最近追踪；
@凌驾
受保护的Void doInBackground（整数…页）{
试一试{
recentTracks=新的ArrayList（）；
睡眠（3000）；
MessageItem数据=null；
对于（int i=0；i<10；i++）{
添加（数据）；
}
}捕获（例外e）{
}
返回null；
}
}
公共类ActivityAdapter扩展了ArrayAdapter{
私人最终语境；
私人最终ArrayList项目；
//private int currentPage=0；
公共活动适配器（上下文上下文，ArrayList recentTrackArrayList）{
super（context，0，recentTrackArrayList）；
this.context=上下文；
this.items=recentTrackArrayList；
}
公共视图getView（int位置、视图转换视图、视图组父视图）{
视图行视图；
{
LayoutFlater充气器=（LayoutFlater）上下文
.getSystemService（上下文布局\充气机\服务）；
convertView=GetLayoutFlater（）。充气
（R.layout.message\u list\u项，父项，false）；
rowView=convertView；
TextView comment2=（TextView）行视图
.findViewById（R.id.messaging_用户名）；
comment2.setText（items.get（position.Username））；
ImageView注释3=（ImageView）行视图
.findviewbyd（R.id.照片）；
if（items.get（position.Image==null）{
注释3.setImageResource（R.drawable.ic_启动器）；
}
TextView comment4=（TextView）行视图
.findViewById（R.id.U日期）；
comment4.setText（items.get（position.DateTimeStamp.toString（））；
TextView comment5=（TextView）行视图
.findViewById（R.id.messaging_字符串）；
comment5.setText（items.get（position.MessageString））；
}
返回视图；
}
}
}
public class MainActivity extends ActionBarActivity {
TextView threadId;
ArrayList<MessageItem> items = new ArrayList<MessageItem>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button newMessage = (Button) findViewById(R.id.new_message_button);
final Context context = this;
final ListView listView = (ListView) this.findViewById(R.id.messagingListView);
final ActivityAdapter itemAdapter = new ActivityAdapter(getApplicationContext(), this.MessageFeedData());
listView.setAdapter(itemAdapter);
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
listView.getAdapter().getItem(position);
MessageItem itemAtPos = (MessageItem) parent.getItemAtPosition(position);
Intent intent = new Intent(MainActivity.this, ConversationView.class);
intent.putExtra("threadId", String.valueOf(itemAtPos.ThreadId));
startActivity(intent);
}
});
newMessage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// custom dialog
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.write_message_layout);
dialog.setTitle("Title...");
// set the custom dialog components - text, image and button
final Button post_button = (Button) dialog.findViewById(R.id.button_post);
final EditText new_write_message = (EditText) dialog.findViewById(R.id.messge_msg);
final EditText to_message = (EditText) dialog.findViewById(R.id.to_newmsg);
post_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
items.add(new MessageItem(5458, to_message.getText().toString(), "imh", DateTime.now(), new_write_message.getText().toString()));
itemAdapter.notifyDataSetChanged();
if (v.getId() == R.id.button_post);
to_message.setText("");
new_write_message.setText("");
}
});
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(MainActivity.this, "Clicked", Toast.LENGTH_LONG)
.show();
}
});
dialog.show();
}
});
}
public ArrayList<MessageItem> MessageFeedData() {
ArrayList<MessageItem> items = new ArrayList<MessageItem>();
//recieved_item_click_actions fields
items.add(new MessageItem(1, "Bob Doe", "image", DateTime.now(), "Hello how are you?"));
items.add(new MessageItem(200, "Simon Pink", "image", DateTime.now(), "Hello what are you doing"));
return items;
}
class ActivityFeedTask extends AsyncTask<Integer, Void, Void> {
ArrayList<MessageItem> recentTracks;
@Override
protected Void doInBackground(Integer... page) {
try {
recentTracks = new ArrayList<MessageItem>();
Thread.sleep(3000);
MessageItem data = null;
for (int i = 0; i < 10; i++) {
recentTracks.add(data);
}
} catch (Exception e) {
}
return null;
}
}
public class ActivityAdapter extends ArrayAdapter<MessageItem> {
private final Context context;
private final ArrayList<MessageItem> items;
//private int currentPage = 0;
public ActivityAdapter(Context context, ArrayList<MessageItem> recentTrackArrayList) {
super(context, 0, recentTrackArrayList);
this.context = context;
this.items = recentTrackArrayList;
}
public View getView(int position, View convertView, ViewGroup parent) {
View rowView;
{
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = getLayoutInflater().inflate
(R.layout.message_list_item, parent, false);
rowView = convertView;
TextView comment2 = (TextView) rowView
.findViewById(R.id.messaging_username);
comment2.setText(items.get(position).Username);
ImageView comment3 = (ImageView) rowView
.findViewById(R.id.messaging_photo);
if (items.get(position).Image == null) {
comment3.setImageResource(R.drawable.ic_launcher);
}
TextView comment4 = (TextView) rowView
.findViewById(R.id.messaging_date);
comment4.setText(items.get(position).DateTimeStamp.toString());
TextView comment5 = (TextView) rowView
.findViewById(R.id.messaging_string);
comment5.setText(items.get(position).MessageString);
}
return convertView;
}
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<EditText
android:id="@+id/to_newmsg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="TO" />
<EditText
android:id="@+id/messge_msg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/to_newmsg"
android:text="MESSAGE" />
<Button
android:id="@+id/button_post"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/messge_msg"
android:text="Send" />
</RelativeLayout>
final ActivityAdapter itemAdapter = new ActivityAdapter(getApplicationContext(), this.MessageFeedData());
final ListView listView = (ListView) this.findViewById(R.id.messagingListView);
items = this.MessageFeedData());
final ActivityAdapter itemAdapter = new ActivityAdapter(getApplicationContext(), items);