Android:通知会在Kit-Kat上更新一定次数后停止更新 [英] Android: Notification stops updating once it has updated for a certain number of times on Kit-Kat
问题描述
因此我的应用程序中有一条通知.该通知包含一些文本和图像，这些文本和图像是从我首先填充的LruCache中获取的.问题是在我的情况下，在 Kit-Kat设备(Moto E，XIomi)上，通知已停止更新(如果它已经更新了固定的次数)，比如说n(此n通常是固定的对于每个设备，则< 10).这是我的更新代码
So I have a notification in my app. The notification has some text and an image which I fetch from a LruCache which I populate at the start. The problem is that on Kit-Kat devices (Moto E, XIomi) in my case, the notification stops updating if it has already updated a fixed number of times, lets say n (this n is usually fixed for each device, and is <10). This is my code for updating
String title = CommonUtils.getTitleFromID(id, context);
Bitmap bitmap = DataProvider.getInstance(context).diskLruImageCache.getBitmap(id + "");
if (playbackPaused) {
bigView.setImageViewResource(R.id.pause, R.drawable.pause_noti);
smallView.setImageViewResource(R.id.pause1, R.drawable.pause_noti);
remoteViews.setImageViewResource(R.id.pause2, R.drawable.pause_noti);
playbackPaused = false;
Log.d(TAG, "noti-false");
}
bigView.setTextViewText(R.id.title, title + "");
bigView.setImageViewBitmap(R.id.img, bitmap);
smallView.setTextViewText(R.id.title1, title);
smallView.setImageViewBitmap(R.id.img1, bitmap);
mNotificationManager.notify(NOTIFY_ID, notification);
我尝试了一些调试和全部工作，然后发现如果我未设置位图，(只需执行
bitmap = null)，然后一切正常.
I tried with a bit of debugging and all and I found that if I do not set the bitmap, (and just do
bitmap = null) then everything works fine.
我不明白为什么会这样.由于我已经在Nexus 5(Lollipop)和其他Android 5手机上进行过测试，因此该问题仅适用于android版本，但这种情况不会发生.有人知道背后的原因是什么吗?
I don't understand why this is happening. This issue is android version specific since I already tested on Nexus 5 (Lollipop) and other Android 5 phones but there this doesn't happen. Does someone have any idea what the reason behind this might be?
我不希望有确切的情况.甚至正确方向上的一些想法也将非常有帮助.谢谢!!
I am not expecting an exact situation. Even some ideas in the right direction will be very helpful. Thanks !!
我还在为我的DiskLruCache添加代码，以防可能需要，
I am also adding the code for my DiskLruCache in case that might be needed,
public class DiskLruImageCache {
private DiskLruCache mDiskCache;
private Bitmap.CompressFormat mCompressFormat = Bitmap.CompressFormat.JPEG;
private int mCompressQuality = 70;
private static final int APP_VERSION = 1;
private static final int VALUE_COUNT = 1;
private static final String TAG = "DiskLruImageCache";
public DiskLruImageCache( Context context,String uniqueName, int diskCacheSize,
Bitmap.CompressFormat compressFormat, int quality ) {
try {
final File diskCacheDir = getDiskCacheDir(context, uniqueName );
mDiskCache = DiskLruCache.open( diskCacheDir, APP_VERSION, VALUE_COUNT, diskCacheSize );
mCompressFormat = compressFormat;
mCompressQuality = quality;
} catch (IOException e) {
e.printStackTrace();
}
}
private boolean writeBitmapToFile( Bitmap bitmap, DiskLruCache.Editor editor )
throws IOException {
OutputStream out = null;
try {
out = new BufferedOutputStream( editor.newOutputStream( 0 ), Utils.IO_BUFFER_SIZE );
return bitmap.compress( mCompressFormat, mCompressQuality, out );
} finally {
if ( out != null ) {
out.close();
}
}
}
private boolean writeUriToFile( Uri bitmap, DiskLruCache.Editor editor )
throws IOException, FileNotFoundException {
OutputStream out = null;
try {
out = new BufferedOutputStream( editor.newOutputStream( 0 ), Utils.IO_BUFFER_SIZE );
return true;
} finally {
if ( out != null ) {
out.close();
}
}
}
private File getDiskCacheDir(Context context, String uniqueName) {
// Check if media is mounted or storage is built-in, if so, try and use external cache dir
// otherwise use internal cache dir
final String cachePath =
Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()) ||
!Utils.isExternalStorageRemovable() ?
Utils.getExternalCacheDir(context).getPath() :
context.getCacheDir().getPath();
return new File(cachePath + File.separator + uniqueName);
}
public void put( String key, Bitmap data ) {
DiskLruCache.Editor editor = null;
try {
editor = mDiskCache.edit( key );
if ( editor == null ) {
return;
}
if( writeBitmapToFile( data, editor ) ) {
mDiskCache.flush();
editor.commit();
if ( BuildConfig.DEBUG ) {
Log.d( "cache_test_DISK_", "image put on disk cache " + key );
}
} else {
editor.abort();
if ( BuildConfig.DEBUG ) {
Log.d( "cache_test_DISK_", "ERROR on: image put on disk cache " + key );
}
}
} catch (IOException e) {
if ( BuildConfig.DEBUG ) {
Log.d( "cache_test_DISK_", "ERROR on: image put on disk cache " + key );
}
try {
if ( editor != null ) {
editor.abort();
}
} catch (IOException ignored) {
}
}
}
public void put( String key, Uri data ) {
DiskLruCache.Editor editor = null;
try {
editor = mDiskCache.edit( key );
if ( editor == null ) {
return;
}
if( writeUriToFile( data, editor ) ) {
mDiskCache.flush();
editor.commit();
if ( BuildConfig.DEBUG ) {
Log.d( "cache_test_DISK_", "image put on disk cache " + key );
}
} else {
editor.abort();
if ( BuildConfig.DEBUG ) {
Log.d( "cache_test_DISK_", "ERROR on: image put on disk cache " + key );
}
}
} catch (IOException e) {
if ( BuildConfig.DEBUG ) {
Log.d( "cache_test_DISK_", "ERROR on: image put on disk cache " + key );
}
try {
if ( editor != null ) {
editor.abort();
}
} catch (IOException ignored) {
}
}
}
public synchronized Bitmap getBitmap( String key ) {
Bitmap bitmap = null;
DiskLruCache.Snapshot snapshot = null;
try {
snapshot = mDiskCache.get( key );
if ( snapshot == null ) {
return null;
}
final InputStream in = snapshot.getInputStream( 0 );
if ( in != null ) {
final BufferedInputStream buffIn =
new BufferedInputStream( in, Utils.IO_BUFFER_SIZE );
bitmap = BitmapFactory.decodeStream(buffIn);
}
} catch ( IOException e ) {
e.printStackTrace();
} finally {
if ( snapshot != null ) {
snapshot.close();
}
}
if ( BuildConfig.DEBUG ) {
Log.d( "cache_test_DISK_", bitmap == null ? "" : "image read from disk " + key);
}
return bitmap;
}
public boolean containsKey( String key ) {
boolean contained = false;
DiskLruCache.Snapshot snapshot = null;
try {
snapshot = mDiskCache.get( key );
contained = snapshot != null;
} catch (IOException e) {
e.printStackTrace();
} finally {
if ( snapshot != null ) {
snapshot.close();
}
}
return contained;
}
public boolean removeKey( String key ) {
boolean removed=false;
DiskLruCache.Snapshot snapshot = null;
try {
removed = mDiskCache.remove( key );
} catch (IOException e) {
e.printStackTrace();
} finally {
if ( snapshot != null ) {
snapshot.close();
}
}
return removed;
}
public void clearCache() {
if ( BuildConfig.DEBUG ) {
Log.d("cache_test_DISK_", "disk cache CLEARED");
}
try {
mDiskCache.delete();
} catch ( IOException e ) {
e.printStackTrace();
}
}
public File getCacheFolder() {
return mDiskCache.getDirectory();
}
}
推荐答案
是否输入kitkat和更低版本的条件...在通知系统中kitkat版本更改颜色后，becoz会发出警告..我的mipmap通知img siz为96 * 96
put if condition for kitkat and lower versions ... becoz after kitkat version changes in color in notification system.. my mipmap notify img siz is 96*96
NOTIFICATION_ID= Integer.parseInt(arr_msg[7].toString());
mBuilder.setSmallIcon(R.mipmap.alert_nodification_icon)
.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.alert_nodification_icon))
.setContentTitle(notification_vehicle_no)
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(notification_msg))
.setContentText(notification_msg);}
mBuilder.setContentIntent(contentIntent);
Notification notification = mBuilder.build();
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notification.defaults |= Notification.DEFAULT_SOUND;
notification.defaults |= Notification.DEFAULT_VIBRATE;
mNotificationManager.notify(NOTIFICATION_ID,notification);
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