feat:iOS support toast gravity

demo/src/ModalDemo.ts

@@ -14,7 +14,7 @@ class ModalDemo extends Panel {
                 textAlignment: Gravity.Center,
                 height: 50,
             }),
-            label('toast'),
+            label('toast on bottom'),
             label('Click me').apply({
                 width: 200,
                 height: 50,
@@ -26,6 +26,31 @@ class ModalDemo extends Panel {
                     modal(context).toast('This is a toast.')
                 }
             } as IText),
+            label('toast on top'),
+            label('Click me').apply({
+                width: 200,
+                height: 50,
+                bgColor: colors[0],
+                textSize: 30,
+                textColor: Color.WHITE,
+                layoutConfig: layoutConfig().exactly(),
+                onClick: () => {
+                    modal(context).toast('This is a toast.', Gravity.Top)
+                }
+            } as IText),
+
+            label('toast on center'),
+            label('Click me').apply({
+                width: 200,
+                height: 50,
+                bgColor: colors[0],
+                textSize: 30,
+                textColor: Color.WHITE,
+                layoutConfig: layoutConfig().exactly(),
+                onClick: () => {
+                    modal(context).toast('This is a toast.', Gravity.Center)
+                }
+            } as IText),
         ]).apply({
             layoutConfig: layoutConfig().atmost().h(LayoutSpec.WRAP_CONTENT),
             gravity: Gravity.Center,

iOS/Pod/Classes/Plugin/DoricModalPlugin.m

@@ -20,6 +20,7 @@
 //  Created by pengfei.zhou on 2019/7/29.
 //
 
+#import <Doric/Doric.h>
 #import "DoricModalPlugin.h"
 #import "DoricUtil.h"
 
@@ -27,7 +28,11 @@ @implementation DoricModalPlugin
 
 - (void)toast:(NSDictionary *)dic withPromise:(DoricPromise *)promise {
     dispatch_async(dispatch_get_main_queue(), ^{
-        showToast(dic[@"msg"]);
+        __block DoricGravity gravity = BOTTOM;
+        [dic[@"gravity"] also:^(NSNumber *it) {
+            gravity = (DoricGravity) [it integerValue];
+        }];
+        showToast(dic[@"msg"], gravity);
     });
 }
 

iOS/Pod/Classes/Util/DoricUtil.h

@@ -21,6 +21,7 @@
 //
 
 #import <Foundation/Foundation.h>
+#import "DoricLayouts.h"
 
 void DoricLog(NSString *_Nonnull format, ...);
 
@@ -36,7 +37,4 @@ NSBundle *_Nonnull DoricBundle(void);
 #define DC_UNLOCK(lock) dispatch_semaphore_signal(lock);
 #endif
 
-void showToastInView(NSString *_Nonnull text, UIView *_Nonnull superView);
-
-
-void showToast(NSString *_Nonnull text);
+void showToast(NSString *_Nonnull text, DoricGravity gravity);

iOS/Pod/Classes/Util/DoricUtil.m

@@ -48,10 +48,8 @@ void DoricLog(NSString *_Nonnull format, ...) {
 }
 
 
-void showToastInView(NSString *text, UIView *superView) {
-    if (!superView) {
-        return;
-    }
+void showToast(NSString *text, DoricGravity gravity) {
+    UIView *superView = [UIApplication sharedApplication].windows.lastObject;
     UILabel *label = [[UILabel alloc] init];
     label.font = [UIFont systemFontOfSize:20.f];
     label.text = text;
@@ -63,15 +61,17 @@ void showToastInView(NSString *text, UIView *superView) {
     label.width += 30;
     label.height += 10;
     label.layer.cornerRadius = label.height / 2;
-    label.bottom = superView.height - 20;
     label.centerX = superView.width / 2;
+    if ((gravity & BOTTOM) == BOTTOM) {
+        label.bottom = superView.height - 20;
+    } else if ((gravity & TOP) == TOP) {
+        label.top = 108;
+    } else {
+        label.centerY = (superView.height - 88) / 2;
+    }
+
     [superView addSubview:label];
     dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t) (2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
         [label removeFromSuperview];
     });
 }
-
-
-void showToast(NSString *text) {
-    showToastInView(text, [UIApplication sharedApplication].windows.lastObject);
-}