android常用代码(2)

try {
   Intent intent = new Intent(Intent.ACTION_CALL);
   intent.setData(Uri.parse("tel:+110"));
   startActivity(intent);
} catch (Exception e) {
   Log.e("SampleApp", "Failed to invoke call", e);
}
9、android中发送Email：

Intent i = new Intent(Intent.ACTION_SEND); 
//i.setType("text/plain"); //模拟器请使用这行
i.setType("message/rfc822") ; // 真机上使用这行
i.putExtra(Intent.EXTRA_EMAIL, new String[]{"test@gmail.com","test@163.com}); 
i.putExtra(Intent.EXTRA_SUBJECT,"subject goes here"); 
i.putExtra(Intent.EXTRA_TEXT,"body goes here"); 
startActivity(Intent.createChooser(i, "Select email application."));
10、Android中打开浏览器：

Intent viewIntent = new
    Intent("android.intent.action.VIEW",Uri.parse("http://vaiyanzi.cnblogs.com"));

startActivity(viewIntent);
11、Android 获取设备唯一标识码：

String android_id = Secure.getString(getContext().getContentResolver(), Secure.ANDROID_ID);
12、Android中获取IP地址：

public String getLocalIpAddress() {
    try {
        for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
en.hasMoreElements();) {
            NetworkInterface intf = en.nextElement();
            for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses();
enumIpAddr.hasMoreElements();) {
                InetAddress inetAddress = enumIpAddr.nextElement();
                if (!inetAddress.isLoopbackAddress()) {
                    return inetAddress.getHostAddress().toString();
                }
            }
        }
    } catch (SocketException ex) {
        Log.e(LOG_TAG, ex.toString());