diff --git a/Leanote/controller/note/NoteViewController.m b/Leanote/controller/note/NoteViewController.m
index ce60bc1..5368932 100644
--- a/Leanote/controller/note/NoteViewController.m
+++ b/Leanote/controller/note/NoteViewController.m
@@ -539,7 +539,7 @@ BOOL hiddenBar = NO;
 	}
 	
 	// 得到当前的url
-	int count = [realUrls count];
+	NSUInteger count = [realUrls count];
 	if(count < 1) {
 		return;
 	}
diff --git a/Leanote/service/SyncService.m b/Leanote/service/SyncService.m
index 86bf306..035d8f5 100644
--- a/Leanote/service/SyncService.m
+++ b/Leanote/service/SyncService.m
@@ -92,7 +92,7 @@ BOOL inSyncing = NO;
 // 同步笔记本
 - (void) syncNotebook:(NSNumber *)afterUsn callback:(void (^)(BOOL))callback
 {
-	NSNumber *maxEntry = [NSNumber numberWithInt:maxEntryInt];
+	NSNumber *maxEntry = [NSNumber numberWithUnsignedInteger:maxEntryInt];
 	[ApiService getSyncNotebooks:afterUsn maxEntry:maxEntry success:^(NSArray * notebookObjs) {
 		if(self.canceled) {
 			return;
@@ -100,7 +100,7 @@ BOOL inSyncing = NO;
 		[self syncNotebookToLocal:notebookObjs];
 		
 		// 如果一样, 表示很可能还有笔记本, 得到最大的usn, 递归调用之
-		int count = [notebookObjs count];
+		NSUInteger count = [notebookObjs count];
 		if (count == maxEntryInt) {
 			NSNumber *maxUsn = notebookObjs[count-1][@"Usn"];
 			[self syncNotebook:maxUsn callback:callback];
@@ -186,7 +186,7 @@ BOOL inSyncing = NO;
 // 同步笔记
 - (void) syncNote:(NSNumber *)afterUsn callback:(void (^)(BOOL))callback
 {
-	NSNumber *maxEntry = [NSNumber numberWithInt:maxEntryInt];
+	NSNumber *maxEntry = [NSNumber numberWithUnsignedInteger:maxEntryInt];
 	[ApiService getSyncNotes:afterUsn maxEntry:maxEntry success:^(NSArray * noteObjs) {
 		if(self.canceled) {
 			return;
@@ -194,7 +194,7 @@ BOOL inSyncing = NO;
 		[self syncNoteToLocal:noteObjs];
 		
 		// 如果一样, 表示很可能还有笔记本, 得到最大的usn, 递归调用之
-		int count = [noteObjs count];
+		NSUInteger count = [noteObjs count];
 		if (count == maxEntryInt) {
 			NSNumber *maxUsn = noteObjs[count-1][@"Usn"];
 			[self syncNote:maxUsn callback:callback];
@@ -244,7 +244,7 @@ BOOL inSyncing = NO;
 // 同步标签
 - (void) syncTag:(NSNumber *)afterUsn callback:(void (^)(BOOL))callback
 {
-	NSNumber *maxEntry = [NSNumber numberWithInt:maxEntryInt];
+	NSNumber *maxEntry = [NSNumber numberWithUnsignedInteger:maxEntryInt];
 	[ApiService getSyncTags:afterUsn maxEntry:maxEntry success:^(NSArray * tagObjs) {
 		if(self.canceled) {
 			return;
@@ -252,7 +252,7 @@ BOOL inSyncing = NO;
 		[self syncTagToLocal:tagObjs];
 		
 		// 如果一样, 表示很可能还有Tag, 得到最大的usn, 递归调用之
-		int count = [tagObjs count];
+		NSUInteger count = [tagObjs count];
 		if (count == maxEntryInt) {
 			NSNumber *maxUsn = tagObjs[count-1][@"Usn"];
 			[self syncTag:maxUsn callback:callback];
diff --git a/Leanote/util/LeaURLRequest.m b/Leanote/util/LeaURLRequest.m
index 00e3a36..6178a9e 100755
--- a/Leanote/util/LeaURLRequest.m
+++ b/Leanote/util/LeaURLRequest.m
@@ -39,7 +39,7 @@
     request.HTTPBody = [requestBody dataUsingEncoding:NSUTF8StringEncoding];
     
     // Auth Headers
-    [request setValue:[NSString stringWithFormat:@"%d", requestBody.length] forHTTPHeaderField:@"Content-Length"];
+    [request setValue:[NSString stringWithFormat:@"%lu", requestBody.length] forHTTPHeaderField:@"Content-Length"];
     [request addValue:@"*/*" forHTTPHeaderField:@"Accept"];
     
     // Bearer Token
diff --git a/Leanote/view/LeaImageSliderViewController.h b/Leanote/view/LeaImageSliderViewController.h
index 8dce168..045fb9d 100644
--- a/Leanote/view/LeaImageSliderViewController.h
+++ b/Leanote/view/LeaImageSliderViewController.h
@@ -16,6 +16,6 @@
 
 @property (strong, nonatomic) NSArray *urlArr;
 @property (strong, nonatomic) NSString *curUrl;
-@property int curIndex;
+@property NSUInteger curIndex;
 
 @end
\ No newline at end of file
diff --git a/Leanote/view/LeaImageSliderViewController.m b/Leanote/view/LeaImageSliderViewController.m
index c2ea98d..4885584 100644
--- a/Leanote/view/LeaImageSliderViewController.m
+++ b/Leanote/view/LeaImageSliderViewController.m
@@ -20,7 +20,7 @@
 
 @property (nonatomic, strong) UIButton *saveBtn;
 
-@property int count;
+@property NSUInteger count;
 @property (strong, nonatomic) NSMutableArray *views;
 @end
 
@@ -222,7 +222,7 @@
 }
 -(void)setIndexLabel
 {
-	_label.text = [NSString stringWithFormat:@"%i/%i", self.curIndex + 1, self.count];
+	_label.text = [NSString stringWithFormat:@"%lu/%lu", self.curIndex + 1, self.count];
 }
 
 @end