MUI

##打开页面默认弹出键盘及返回关闭键盘 http://www.cnblogs.com/phillyx/

(function(keyboard) {
	var openSoftKeyboard = function() {
		if (mui.os.ios) {
			var webView = plus.webview.currentWebview().nativeInstanceObject();
			webView.plusCallMethod({
				"setKeyboardDisplayRequiresUserAction": false
			});
		} else {
			var Context = plus.android.importClass("android.content.Context");
			var InputMethodManager = plus.android.importClass("android.view.inputmethod.InputMethodManager");
			var main = plus.android.runtimeMainActivity();
			var imm = main.getSystemService(Context.INPUT_METHOD_SERVICE);
			imm.toggleSoftInput(0, InputMethodManager.SHOW_FORCED);
		}
	};
	var autoFocus = function(obj) {
		if (mui.os.ios) {
			setTimeout(function() {
				openSoftKeyboard();
				obj.focus();
				if (obj.tagName.toLowerCase() == 'textarea') {
					moveEnd(obj);
				}
			}, 300);
		} else {
			//安卓的获取不到焦点，暂时不自动弹出
		}
	};
	keyboard.autoFocus = autoFocus;
	/**
	 * 预加载页面返回时为隐藏，不会自动关闭输入法，可以通过blur来关闭
	 * @param {Object} isRemoveValue
	 */
	function blur(isRemoveValue) {
		var ac = document.activeElement;
		ac.blur();
		if (isRemoveValue && ac.value) {
			ac.value = '';
		}
	};
	keyboard.blur = blur;
	/**
	 * @description ios下textarea.onfocus 时，默认在字首，添加该方法移动到尾部
	 * @param {Object} obj
	 */

	function moveEnd(obj) {
		var len = obj.value.length;
		if (document.selection) {
			var sel = obj.createTextRange();
			sel.moveStart('character', len);
			sel.collapse();
			sel.select();
		} else if (typeof obj.selectionStart == 'number' && typeof obj.selectionEnd == 'number') {
			obj.selectionStart = obj.selectionEnd = len;
		}
	};
	//			mui.plusReady(function() {
	//				if (mui.os.android) {
	//					Array.prototype.forEach.call(document.querySelectorAll(".mui-input-group input[type='text']"), function(ip) {
	//						ip.setAttribute('autofocus', 'autofocus');
	//					});
	//				}
	//			});
}(window.mykeyboard = {}));