适配iOS6

TZImagePickerController/TZImagePickerController/TZImagePickerController.h

@@ -233,6 +233,7 @@
 
 @interface NSString (TzExtension)
 - (BOOL)tz_containsString:(NSString *)string;
+- (CGSize)tz_calculateSizeWithAttributes:(NSDictionary *)attributes maxSize:(CGSize)maxSize;
 @end
 
 

TZImagePickerController/TZImagePickerController/TZImagePickerController.m

@@ -62,7 +62,9 @@
 
 - (void)setNaviBgColor:(UIColor *)naviBgColor {
     _naviBgColor = naviBgColor;
+    if (iOS7Later) {
         self.navigationBar.barTintColor = naviBgColor;
+    }
 }
 
 - (void)setNaviTitleColor:(UIColor *)naviTitleColor {
@@ -708,6 +710,19 @@
     }
 }
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+- (CGSize)tz_calculateSizeWithAttributes:(NSDictionary *)attributes maxSize:(CGSize)maxSize {
+    CGSize size;
+    if (iOS7Later) {
+        size = [self boundingRectWithSize:maxSize options:NSStringDrawingUsesFontLeading attributes:attributes context:nil].size;
+    } else {
+        size = [self sizeWithFont:attributes[NSFontAttributeName] constrainedToSize:maxSize];
+    }
+    return size;
+}
+#pragma clang diagnostic pop
+
 @end
 
 

TZImagePickerController/TZImagePickerController/TZPhotoPickerController.m

@@ -54,7 +54,9 @@ static CGFloat itemMargin = 5;
         _imagePickerVc = [[UIImagePickerController alloc] init];
         _imagePickerVc.delegate = self;
         // set appearance / 改变相册选择页的导航栏外观
+        if (iOS7Later) {
             _imagePickerVc.navigationBar.barTintColor = self.navigationController.navigationBar.barTintColor;
+        }
         _imagePickerVc.navigationBar.tintColor = self.navigationController.navigationBar.tintColor;
         UIBarButtonItem *tzBarItem, *BarItem;
         if (iOS9Later) {
@@ -294,14 +296,14 @@ static CGFloat itemMargin = 5;
         toolBarTop = self.view.tz_height - toolBarHeight - navigationHeight;
     }
     _bottomToolBar.frame = CGRectMake(0, toolBarTop, self.view.tz_width, toolBarHeight);
-    CGFloat previewWidth = [tzImagePickerVc.previewBtnTitleStr boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX) options:NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:16]} context:nil].size.width + 2;
+    CGFloat previewWidth = [tzImagePickerVc.previewBtnTitleStr tz_calculateSizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:16]} maxSize:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX)].width + 2;
     if (!tzImagePickerVc.allowPreview) {
         previewWidth = 0.0;
     }
     _previewButton.frame = CGRectMake(10, 3, previewWidth, 44);
     _previewButton.tz_width = !tzImagePickerVc.showSelectBtn ? 0 : previewWidth;
     if (tzImagePickerVc.allowPickingOriginalPhoto) {
-        CGFloat fullImageWidth = [tzImagePickerVc.fullImageBtnTitleStr boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX) options:NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:13]} context:nil].size.width;
+        CGFloat fullImageWidth = [tzImagePickerVc.fullImageBtnTitleStr tz_calculateSizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:13]} maxSize:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX)].width;
         _originalPhotoButton.frame = CGRectMake(CGRectGetMaxX(_previewButton.frame), 0, fullImageWidth + 56, 50);
         _originalPhotoLabel.frame = CGRectMake(fullImageWidth + 46, 0, 80, 50);
     }

TZImagePickerController/TZImagePickerController/TZPhotoPreviewController.m

@@ -241,7 +241,7 @@
     CGFloat toolBarTop = self.view.tz_height - toolBarHeight;
     _toolBar.frame = CGRectMake(0, toolBarTop, self.view.tz_width, toolBarHeight);
     if (_tzImagePickerVc.allowPickingOriginalPhoto) {
-        CGFloat fullImageWidth = [_tzImagePickerVc.fullImageBtnTitleStr boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX) options:NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:13]} context:nil].size.width;
+        CGFloat fullImageWidth = [_tzImagePickerVc.fullImageBtnTitleStr tz_calculateSizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:13]} maxSize:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX)].width;
         _originalPhotoButton.frame = CGRectMake(0, 0, fullImageWidth + 56, 44);
         _originalPhotoLabel.frame = CGRectMake(fullImageWidth + 42, 0, 80, 44);
     }

TZImagePickerController/ViewController.m

@@ -57,7 +57,9 @@
         _imagePickerVc = [[UIImagePickerController alloc] init];
         _imagePickerVc.delegate = self;
         // set appearance / 改变相册选择页的导航栏外观
+        if (iOS7Later) {
             _imagePickerVc.navigationBar.barTintColor = self.navigationController.navigationBar.barTintColor;
+        }
         _imagePickerVc.navigationBar.tintColor = self.navigationController.navigationBar.tintColor;
         UIBarButtonItem *tzBarItem, *BarItem;
         if (iOS9Later) {
@@ -236,7 +238,9 @@
     
     // 2. Set the appearance
     // 2. 在这里设置imagePickerVc的外观
+    // if (iOS7Later) {
         // imagePickerVc.navigationBar.barTintColor = [UIColor greenColor];
+    // }
     // imagePickerVc.oKButtonTitleColorDisabled = [UIColor lightGrayColor];
     // imagePickerVc.oKButtonTitleColorNormal = [UIColor greenColor];
     // imagePickerVc.navigationBar.translucent = NO;