我的Android应用程序在下载解析通知时挂起，图像在使用应用时准确无误。现在我知道可以启动一项服务，但我想避免这样做。我应该怎么做，以便我的应用程序不会挂起。
ParseReceiver.java
public class ParseReceiver extends ParsePushBroadcastReceiver{
Bundle AnalyticsBundle;
String title = "";
String message = "";
String action_id = "";
String action_type = "";
String imageUrl = "";
String notType = "";
TripHomePage tripPageHome;
@Override
public void onPushReceive(final Context context, Intent intent) {
AnalyticsBundle=intent.getExtras();
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
try {
JSONObject json = new JSONObject(intent.getExtras().getString("com.parse.Data"));
try {
if (json.has("aps")) {
json = json.getJSONObject("aps");
}
} catch (Exception e) {
}
if (json.has("title")) {
title = json.getString("title").toString();
}
if (json.has("message")) {
message = json.getString("message").toString();
}
if (json.has("action_type")) {
action_type = json.getString("action_type").toString();
}
if (json.has("action_id")) {
action_id = json.getString("action_id").toString();
}
if (json.has("url_image")) {
imageUrl = json.getString("url_image").toString();
}
if (json.has("notification_type")) {
notType = json.getString("notification_type").toString();
}
Boolean check=pref2.getBoolean("keyfornotification",true);
if(check==true)
{
generateNotification(notType, title, message, action_id, action_type, imageUrl, context);
}
else if(check==false)
{
if(action_type.equals("UpdateApp"))
{
generateNotification(notType, title, message, action_id, action_type, imageUrl, context);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
public void generateNotification(String notType,String title, String message, String action_id, String action_type,String imageUrl,Context context){
try {
if (notType.equals("normalt") || notType.equalsIgnoreCase("NormalText")) {
showtext(title, message, action_type, action_id, context);
}
if (notType.equals("bigi") || notType.equalsIgnoreCase("Bigimage")) {
bigPicture(title, message, imageUrl, action_type, action_id, context);
}
if (notType.equals("overlay") || notType.equalsIgnoreCase("Overlay")) {
bigOverlay(title, message, imageUrl, action_type, action_id, context);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void showtext(String title, String message, String actionType, String actionId, Context context) {
Bitmap tripotoLogo = BitmapFactory.decodeResource(context.getResources(), R.drawable.med);
PendingIntent contentIntent = PendingIntent.getActivities(context,
(int) (Math.random() * 100), getIntent(actionType, actionId, context),
PendingIntent.FLAG_UPDATE_CURRENT);
Notification notif;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
notif = new NotificationCompat.Builder(context)
.setContentTitle(title)
.setContentText(message)
.setSmallIcon(R.drawable.tripotoblack).setColor(Color.BLACK)
.setLargeIcon(tripotoLogo).setContentIntent(contentIntent)
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(message))
.build();
} else {
notif = new NotificationCompat.Builder(context)
.setContentTitle(title)
.setContentText(message)
.setSmallIcon(R.drawable.smalli)
.setLargeIcon(tripotoLogo).setContentIntent(contentIntent)
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(message))
.build();
}
notif.flags |= Notification.FLAG_AUTO_CANCEL;
// Play default notification sound
notif.defaults |= Notification.DEFAULT_SOUND;
NotificationManager notificationManager = (NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE);
notificationManager.notify(0, notif);
}
public void bigPicture(String title, String message, String url, String actionType, String actionId, Context context) {
Bitmap tripImage = null;
InputStream in = null;
try {
in = new URL(url).openStream();
tripImage = BitmapFactory.decodeStream(in);
} catch (IOException e) {
e.printStackTrace();
}
Bitmap largeicon = BitmapFactory.decodeResource(context.getResources(), R.drawable.smalli);
PendingIntent contentIntent = PendingIntent.getActivities(context,
(int) (Math.random() * 100), getIntent(actionType, actionId, context),
PendingIntent.FLAG_UPDATE_CURRENT);
Notification n;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
n = new NotificationCompat.Builder(context)
.setContentTitle(title)
.setContentText(message).setContentIntent(contentIntent)
.setStyle(new NotificationCompat.BigPictureStyle()
.bigPicture(tripImage).setBigContentTitle(title).setSummaryText(message)).setTicker(title).setSmallIcon(R.drawable.tripotoblack).setColor(Color.BLACK)
.setLargeIcon(largeicon)
.build();
} else {
n = new NotificationCompat.Builder(context)
.setContentTitle(title)
.setContentText(message).setContentIntent(contentIntent)
.setStyle(new NotificationCompat.BigPictureStyle()
.bigPicture(tripImage).setBigContentTitle(title).setSummaryText(message)).setTicker(title).setSmallIcon(R.drawable.smalli)
.setLargeIcon(largeicon)
.build();
}
n.flags |= Notification.FLAG_AUTO_CANCEL;
// Play default notification sound
n.defaults |= Notification.DEFAULT_SOUND;
NotificationManager notificationManager =
(NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE);
notificationManager.notify(0, n);
}
public void bigOverlay(String title, String message, String url, String actionType, String actionId, Context context) {
Bitmap tripImage = null;
InputStream in = null;
try {
in = new URL(url).openStream();
tripImage = BitmapFactory.decodeStream(in);
} catch (IOException e) {
e.printStackTrace();
}
NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE);
RemoteViews contentView = new RemoteViews(context.getPackageName(), R.layout.bigo);
contentView.setImageViewBitmap(R.id.imageView, tripImage);
contentView.setTextViewText(R.id.textView, title);
contentView.setTextViewText(R.id.textView2, message);
Bitmap largei = BitmapFactory.decodeResource(context.getResources(), R.drawable.med);
PendingIntent contentIntent = PendingIntent.getActivities(context,
(int) (Math.random() * 100), getIntent(actionType, actionId, context),
PendingIntent.FLAG_UPDATE_CURRENT);
Notification notification;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
notification = new NotificationCompat.Builder(context).setContentInfo("Tripoto:")
.setSmallIcon(R.drawable.tripotoblack).setContentText(message).setContentTitle(title).setColor(Color.BLACK)
.setTicker(title).setLargeIcon(largei).setContentIntent(contentIntent)
.setContentIntent(contentIntent).setPriority(2).setStyle(new NotificationCompat.BigPictureStyle()
.setBigContentTitle(title).setSummaryText(message))
.build();
} else {
notification = new NotificationCompat.Builder(context).setContentInfo("Tripoto:")
.setSmallIcon(R.drawable.smalli).setContentText(message).setContentTitle(title)
.setTicker(title).setLargeIcon(largei).setContentIntent(contentIntent)
.setContentIntent(contentIntent).setPriority(2).setStyle(new NotificationCompat.BigPictureStyle()
.setBigContentTitle(title).setSummaryText(message))
.build();
}
notification.bigContentView = contentView;
notification.flags |= Notification.FLAG_AUTO_CANCEL;
// Play default notification sound
notification.defaults |= Notification.DEFAULT_SOUND;
mNotificationManager.notify(0, notification);
}
//==========bind intent for specific class=====
private Intent[] getIntent(String type, String id, Context context){
Intent[] list = new Intent[2];
switch (type) {
case Constants.UpdateApp:
/**
* first intent will open play store for
* update and second one will open the home page
*/
try {
Intent viewIntent = new Intent("android.intent.action.VIEW",
Uri.parse("https://play.google.com/store/apps/details?id=com.tripoto"));
Intent mIntent = new Intent(context, HomePageSlidingTab.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
mIntent.putExtra(Constants.isCalledFromParse, true);
mIntent.putExtra(Constants.ParseAnalytics, AnalyticsBundle);
list[0] = mIntent;
list[1] = viewIntent;
}catch(Exception e) {}
break;
case Constants.trips:
case Constants.trip:
/**
* first intent will open trip page for
* update and second one will open the home page
*/
Intent notificationIntent = new Intent(context, TripHomePage.class);
notificationIntent.putExtra(Constants.ClickedTripIdKey, id);
notificationIntent.putExtra(Constants.ParseAnalytics, AnalyticsBundle);
notificationIntent.putExtra(Constants.isCalledFromParse, true);
Intent mIntent = new Intent(context, HomePageSlidingTab.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
list[0] = mIntent;
list[1] = notificationIntent;
break;
case Constants.users:
case Constants.user:
/**
* first intent will open profile page for
* update and second one will open the home page
*/
notificationIntent = new Intent(context, ProfileHomePage.class);
notificationIntent.putExtra(Constants.ClickedUserIdKey, id);
notificationIntent.putExtra(Constants.ParseAnalytics, AnalyticsBundle);
notificationIntent.putExtra(Constants.isCalledFromParse, true);
Intent mIntent1 = new Intent(context, HomePageSlidingTab.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
list[0] = mIntent1;
list[1] = notificationIntent;
break;
case Constants.blog:
/**
* first intent will open blog page for
* update and second one will open the home page
*/
notificationIntent = new Intent(context, BlogDetail.class);
notificationIntent.putExtra(Constants.ClickedBlogId, id);
notificationIntent.putExtra(Constants.ParseAnalytics, AnalyticsBundle);
notificationIntent.putExtra(Constants.isCalledFromParse, true);
Intent mIntent2 = new Intent(context, HomePageSlidingTab.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
list[0] = mIntent2;
list[1] = notificationIntent;
break;
case Constants.stash:
/**
* first intent will open stash page for
* update and second one will open the home page
*/
notificationIntent = new Intent(context, InStashTrips.class);
notificationIntent.putExtra(Constants.ClickedTripkeyword, id);
notificationIntent.putExtra(Constants.ParseAnalytics, AnalyticsBundle);
notificationIntent.putExtra(Constants.isCalledFromParse, true);
Intent mIntent3 = new Intent(context, HomePageSlidingTab.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
list[0] = mIntent3;
list[1] = notificationIntent;
break;
case Constants.publish_my_trip:
/**
* first intent will open create trip page for
* update and second one will open the home page
**/
//======I've to use a blank intent coz of its size======:D
notificationIntent = new Intent();
Intent mIntent4 = new Intent(context, HomePageSlidingTab.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
mIntent4.putExtra(Constants.isCalledFromParse, true);
mIntent4.putExtra(Constants.ParseAnalytics, AnalyticsBundle);
mIntent4.putExtra(Constants.isCalledForCreateTrip, true);
list[0] = mIntent4;
list[1] = notificationIntent;
break;
}
return list;
}
}
答案 0 :(得分：0)
您正在抱怨，因为您的应用已挂起，但您正在这样做：
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
故意阻止Android告诉您正在执行可能导致App UI挂起的操作！
在任何情况下，看起来你可以在一个单独的线程中运行代码（我无法看到任何UI更新，所以应该没问题）。你可以试试一个简单的runnable：
@Override
public void onPushReceive(final Context context, final Intent intent) {
new Thread(new Runnable() {
@Override
public void run() {
// do real onPushReceive stuff here
}
}).start();
}
甚至是一个简单的IntentService（他们真的不那么难用）：
@Override
public void onPushReceive(final Context context, final Intent intent) {
Intent serviceIntent = new Intent(context, com.example.MyNotificationService.class);
serviceIntent.putExtra('com.example.mypushintent', intent)
context.startService(serviceIntent);
}
// In MyNotificationService.java
public class MyNotificationService extends IntentService {
@Override
public void onHandleIntent(Intent serviceIntent) {
Intent pushIntent = (Intent)serviceIntent.getParcelableExtra('com.example.mypushintent');
// do stuff here
}
}
在任何情况下，最好尽量减少直接在BroadcastReceivers中完成的工作，并将任何重负荷的东西卸载到线程或服务中。