看看这部分:
runOnUiThread(new Runnable() {
我遇到了问题:
The method runOnUiThread(new Runnable(){}) is undefined for the type new Thread(){}
所以我理解runOnUiThread必须来自一个活动。但我不确定这将如何实施?它是在Preference / settings视图中的对话框
这是ChannelsDialogPreference形成的地方: pref_channels.xml
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
<com.example.tvrplayer.ChannelsDialogPreference
android:title="@string/pref_channels_dialog_title"
android:dialogMessage="@string/pref_channels_dialog_message"
android:negativeButtonText="test"/>
</PreferenceScreen>
ChannelsDialogPreference:
package com.example.tvrplayer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
public class ChannelsDialogPreference extends DialogPreference {
public static Context ctx;
// Activity activity;
public ChannelsDialogPreference(Context context, AttributeSet attrs) {
super(context, attrs);
this.ctx = context;
}
@Override
protected View onCreateDialogView() {
// Set loading spinner
// Start looking for channels
// When complete, show channels
LayoutInflater inflater = ((SettingsActivity) ctx).getLayoutInflater();
final View vw = inflater.inflate(R.layout.channel_content_view, null);
// Do this in a new Thread
Thread thread = new Thread()
{
@Override
public void run() {
try {
final JSONArray channels;
String username = null;
String linkid = null;
final String apiurl = "http://192.168.2.136:8080";
final String channelID = null;
final DatabaseHandler db = new DatabaseHandler(ctx);
List<User> users = db.getAllUsers();
for (User cn : users) {
linkid = cn.getLinkID();
username = cn.getUserName();
}
db.close();
final ArrayList< HashMap < String, String > > channelList = new ArrayList < HashMap < String, String > > ();
try {
if ( channelID != null ) {
channels = Json.getJson(apiurl + "/rest/channel/"+ linkid +"/"+ username + "/" + channelID, "GET");
Log.i("CHANNELS", channels.toString());
for (int i=0; i < channels.length(); i++) {
JSONObject json_data = channels.getJSONObject(i);
String name = json_data.getString("Name");
String channelid = json_data.getString("ChannelID");
HashMap<String, String> channelObject = new HashMap<String, String>();
// if ( json_data.getString("ParentPath") == "" ) {
channelObject.put("id", channelid);
channelObject.put("name", name);
channelList.add(channelObject);
// }
}
} else {
channels = Json.getJson(apiurl + "/rest/channel/"+ linkid +"/"+ username, "GET");
Log.i("CHANNELS", channels.toString());
for (int i=0; i < channels.length(); i++) {
JSONObject json_data = channels.getJSONObject(i);
String name = json_data.getString("Name");
String channelid = json_data.getString("ChannelID");
HashMap<String, String> channelObject = new HashMap<String, String>();
Log.i("CHANNEL LEN", ""+ json_data.getString("ParentID").length());
if ( json_data.getString("ParentID").length() < 32 ) {
channelObject.put("id", channelid);
channelObject.put("name", name);
channelList.add(channelObject);
}
}
}
runOnUiThread(new Runnable() {
public void run() {
HiddenChannelsListAdapter adapter = new HiddenChannelsListAdapter(ctx, channelList);
ListView lv = (ListView) vw.findViewById(R.id.list);
lv.setAdapter(adapter);
lv.isClickable();
lv.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3)
{
Log.i("CLICKED ON LV ITEM", "YEA");
}
});
}
});
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (Exception e) {
e.printStackTrace();
}
}
};
thread.start();
// new ChannelHandler().execute(apiurl, username, linkid, vw, ctx, channelID);
return vw;
}
@Override
protected void onDialogClosed(boolean positiveResult) {
super.onDialogClosed(positiveResult);
persistBoolean(positiveResult);
}
@Override
public void onClick (DialogInterface dialog, int which)
{
super.onClick(dialog, which);
//
Log.v("which", Integer.toString(which));
//
if(which == -1) { //Clear all
// new ChannelHandler().execute(apiurl, username, linkid, vw, ctx, channelID);
}
}
}
答案 0 :(得分:48)
像这样写 -
((Activity) context).runOnUiThread(new Runnable() {
@Override
public void run() {
//Code for the UiThread
}
});
For Fragment:
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
//Code for the UiThread
}
});
这可能会对你有帮助。
答案 1 :(得分:3)
如果您使用的是Fragments
,请添加getActivity()
这里替换:
runOnUiThread(new Runnable() {
由
getActivity().runOnUiThread(new Runnable() {
答案 2 :(得分:0)
您必须setOnClickListener
未在代码中设置
Button confirm = (Button) dialog.findViewById(R.id.btn_confirm);
confirm.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
your call to method...
}
});