5+ App强制禁用软键盘（调用原生代码）

        document.addEventListener("plusready", function(){  
            var runtimeActivity = plus.android.runtimeMainActivity();  
            var w = runtimeActivity.getWindow();  
            plus.android.importClass(w);  
            var params=w.getAttributes();  
            plus.android.importClass(params);  
            var WindowManager = plus.android.importClass('android.view.WindowManager');  
            plus.android.invoke(w,"addFlags",WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);  
            params.windowSoftInputMode = WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;  
        }, false);

原理是调用window.addFlags FLAG_ALT_FOCUSABLE_IM