dialog progressdialog alertdialog 焦点等

1. 后台settitle 卡主无响应
   修改系统源码

    private boolean focus = true;    private CharSequence mTitle = null;    @Override    public void setTitle(CharSequence title) {        mTitle = title;        if(focus){            super.setTitle(title);        }    }    @Override    public void onWindowFocusChanged(boolean hasFocus) {        focus = hasFocus;        if(mTitle != null){            setTitle(mTitle);        }    }

1. progressdialog. setprogress 偶现不起作用

   先show 再 set ， 顺序不要反了，会引起问题，比如显示上次的设置值