iphone下视角滚动

public/javascripts/wechat/directives/iphone_recognize.js

@@ -12,15 +12,48 @@ app.directive('iphoneRecognize',["$timeout",function(timer){
                    element.css({"position":"relative","padding":"1px 0"});
                    $(".post-wrapper").css("marginBottom","0");
                    $("#all_homework_reply").css("marginBottom","0");
-                   window.scrollTo(0,contentHeight);
+//                   window.scrollTo(0,contentHeight);
                }
                if (/ipad|iphone|mac/i.test(navigator.userAgent)){
+                   //开始编辑输入框的时候，软键盘出现，执行此事件
+                   -(void)textFieldDidBeginEditing:(UITextField *)textlab
+                   {
+                       //获取当前输入框的位置信息
+                       CGRect frame = textlab.frame;
+                       //获取键盘底部位置与键盘最高点之间的距离，键盘高度256
+                       int offset = frame.origin.y + frame.size.height - (self.view.frame.size.height - 256.0);
+                       //设置视图上升的时间
+                       NSTimeInterval animaTime = 0.30f;
+                       //字符串随意也行...
+                       [UIView beginAnimations:@"ResizeForKeyboard" context:nil];
+                       //添加视图上的上升时间0.3f
+                       [UIView setAnimationDuration:animaTime];
+
+                       //将视图的Y坐标向上移动offset个单位，以使下面腾出地方用于软键盘的显示
+                       if(offset > 0)
+                           self.view.frame = CGRectMake(0.0f, -offset, self.view.frame.size.width, self.view.frame.size.height);
+                       //提交动画
+                       [UIView commitAnimations];
+                   }
+                   //当用户按下return键或者按回车键，keyboard消失
+                   -(BOOL)textFieldShouldReturn:(UITextField *)textField
+                   {
+                       //收回键盘第一响应者意思...
+                       [textField resignFirstResponder];
+                       return YES;
+                   }
+
+//输入框编辑完成以后，将视图恢复到原始状态
+                   -(void)textFieldDidEndEditing:(UITextField *)textField
+                   {
+                       self.view.frame =CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
+                   }
                    $("#postInput1").bind('focus',function(){
                        toBottom();
                    });
-                   $("#postInput1,#replyBlock").bind("click",function(){
-                       toBottom();
-                   });
+//                   $("#postInput1,#replyBlock").bind("click",function(){
+//                       toBottom();
+//                   });
                    $("#postInput1").bind('blur',function(){
                        element.css("position","fixed");
                        $(".post-wrapper").css("marginBottom","10px");