wrap_content 表示当前元素的高度只要能刚好包含里面的内容 requestWindowFeature(window.feature_no_title);隐藏标题栏 但是要写在setContentView()之前 findViewById()方法获取布局文件中定义的元素 Intent intent =new Intent(Intent.ACTION_VIEW); intent.setData(Uri.parse()); action为intent.ACTION_VIEW 这是一个安卓系统内置动作 intent.ACTION_DIAL 拨号内置动作(data部分要指定协议为tel) Uri.parse()将网址解析成uri对象 再调用setdata()将uri对象传递过去 day 2016/7/24
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