fix(toast) : position error when keyboard show in iOS

Author: 罗瑞东

ios/LRDRCTSimpleToast/LRDRCTSimpleToast.m

@@ -19,7 +19,39 @@
 @interface LRDRCTSimpleToast : NSObject <RCTBridgeModule>
 @end
 
-@implementation LRDRCTSimpleToast
+@implementation LRDRCTSimpleToast {
+    CGFloat _keyOffset;
+}
+
+- (instancetype)init {
+    if (self = [super init]) {
+        _keyOffset = 0;
+        [[NSNotificationCenter defaultCenter] addObserver:self
+                                                 selector:@selector(keyboardWasShown:)
+                                                     name:UIKeyboardDidShowNotification
+                                                   object:nil];
+        [[NSNotificationCenter defaultCenter] addObserver:self
+                                                 selector:@selector(keyboardWillHiden:)
+                                                     name:UIKeyboardWillHideNotification
+                                                   object:nil];
+    }
+    return self;
+}
+
+- (void)keyboardWasShown:(NSNotification *)notification {
+    
+    CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
+    
+    int height = MIN(keyboardSize.height,keyboardSize.width);
+    int width = MAX(keyboardSize.height,keyboardSize.width);
+    
+    _keyOffset = height;
+}
+
+- (void)keyboardWillHiden:(NSNotification *)notification {
+    _keyOffset = 0;
+}
+
 
 RCT_EXPORT_MODULE()
 
@@ -45,6 +77,7 @@ - (void)_show:(NSString *)msg duration:(NSTimeInterval)duration gravity:(NSInteg
     dispatch_async(dispatch_get_main_queue(), ^{
         UIView *root = [[[[[UIApplication sharedApplication] delegate] window] rootViewController] view];
         CGRect bound = root.bounds;
+        bound.size.height -= _keyOffset;
         if (bound.size.height > LRDRCTSimpleToastBottomOffset*2) {
             bound.origin.y += LRDRCTSimpleToastBottomOffset;
             bound.size.height -= LRDRCTSimpleToastBottomOffset*2;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-native-simple-toast",
-  "version": "0.0.4",
+  "version": "0.0.5",
   "description": "Simple Toast for react-native. In Android it's just native toast, in iOS it's https://github.com/scalessec/Toast",
   "main": "index.js",
   "scripts": {

sample/package.json

@@ -8,6 +8,6 @@
   "dependencies": {
     "react": "15.3.0",
     "react-native": "^0.34.1",
-    "react-native-simple-toast": "0.0.4"
+    "react-native-simple-toast": "0.0.5"
   }
 }