Android代码片段

Enumeration networkInfo = NetworkInterface
.getNetworkInterfaces();
while (networkInfo.hasMoreElements())
{
NetworkInterface intf = networkInfo.nextElement();
Enumeration intfAddress = intf
.getInetAddresses();
while (intfAddress.hasMoreElements())
{
InetAddress inetAddress = intfAddress.nextElement();
if (!inetAddress.isLoopbackAddress())
{
ip = inetAddress.getHostAddress().toString();
}
}
}

Enumeration networkInfo = NetworkInterface .getNetworkInterfaces(); while (networkInfo.hasMoreElements()) { NetworkInterface intf = networkInfo.nextElement(); Enumeration intfAddress = intf .getInetAddresses(); while (intfAddress.hasMoreElements()) { InetAddress inetAddress = intfAddress.nextElement(); if (!inetAddress.isLoopbackAddress()) { ip = inetAddress.getHostAddress().toString(); } } }

屏幕分辨率及其相关属性:

DisplayMetrics dm = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
System.out.println(dm.widthPixels + " - " + dm.heightPixels);

DisplayMetrics dm = new DisplayMetrics();activity.getWindowManager().getDefaultDisplay().getMetrics(dm);System.out.println(dm.widthPixels + " - " + dm.heightPixels);

第二种方式获取DipalyMetrics对象（!= 上一种方式获取的对象 ）

DisplayMetrics dm = activity.getResources().getDisplayMetrics();

DisplayMetrics dm = activity.getResources().getDisplayMetrics();

Activity页面切换效果:

new Handler().postDelayed(new Runnable() {
@Override
public void run()
{
Intent intent = new Intent(TransitionActivity.this, DeviceActivity.class);
startActivity(intent);
finish();
//页面切换 -- 淡入淡出效果
overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
// overridePendingTransition(R.anim.zoomin, R.anim.zoomout);
}
}, 5000);