我的代码有问题,我希望得到一些帮助.我是第一次使用这段代码:
new DefaultHttpClient().execute(new HttpGet(linkk)).getEntity().writeTo(
new FileOutputStream(f));
它在Android 2.3上运行得很好但在4.0上却没有.经过一些研究,我听说使用AndroidHttpClient更好,这样它就可以在4.0和3.1上运行.问题是我不知道我是否正确修改了我的代码,而且互联网上没有太多关于AndroidhttpClient的例子.
这是我调整后的代码:
AndroidHttpClient client = AndroidHttpClient.newInstance("Android");
HttpGet request = new HttpGet(linkk);
HttpResponse response = client.execute(request); //here is where the exception is thrown
response.getEntity().writeTo(new FileOutputStream(f));
这是logcat显示的内容:
01-03 01:32:11.950: W/dalvikvm(17991): threadid=1: thread exiting with uncaught exception (group=0x40a2e1f8)
01-03 01:32:11.986: E/AndroidRuntime(17991): FATAL EXCEPTION: main
01-03 01:32:11.986: E/AndroidRuntime(17991): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.lacra.fbirthdays/com.lacra.fbirthdays.ListV}: android.os.NetworkOnMainThreadException
01-03 01:32:11.986: E/AndroidRuntime(17991): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
01-03 01:32:11.986: E/AndroidRuntime(17991): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
01-03 01:32:11.986: E/AndroidRuntime(17991): at android.app.ActivityThread.access$600(ActivityThread.java:123)
01-03 01:32:11.986: E/AndroidRuntime(17991): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
01-03 01:32:11.986: …我正在尝试开发一个发送一些广播消息的应用程序,并从其他Android设备接收一些答案.我在从其他设备接收UDP消息时遇到一些麻烦.我应该提一下,这段代码适用于Gingerbread,但是在JellyBean上它不再起作用了,我不知道可能是什么问题.
这是我发送广播消息的地方(我知道其他设备在端口5000上侦听):
private void sendUDPMessage(String msg) {
try {
DatagramSocket clientSocket = new DatagramSocket();
clientSocket.setBroadcast(true);
InetAddress address = InetAddress.getByName(Utils.getBroadcastAddress());
byte[] sendData;
sendData = msg.getBytes();
DatagramPacket sendPacket = new DatagramPacket(sendData,
sendData.length, address, 5000);
clientSocket.send(sendPacket);
clientSocket.close();
} catch (Exception e) {
e.printStackTrace();
}
}
这是我收到它的地方:
private void start_UDP()
{
try {
serverSocketUDP = new DatagramSocket(5000);
}
catch (Exception e) {
Log.i(LOGTAG, "Exception opening DatagramSocket UDP");
}
final byte[] receiveData = new byte[1024];
while(runningUDP) {
Log.d(LOGTAG, "Waiting for Broadcast request in ServerUDP.");
final …我在找到解决问题的方法时遇到了麻烦.我想在我的Android日历中添加多个事件,但我不知道如何.我给了这个代码:
Calendar cal = Calendar.getInstance();
Intent intent = new Intent(Intent.ACTION_EDIT);
intent.setType("vnd.android.cursor.item/event");
intent.putExtra("beginTime", cal.getTimeInMillis());
intent.putExtra("allDay", true);
intent.putExtra("rrule", "FREQ=YEARLY");
intent.putExtra("endTime", cal.getTimeInMillis()+60*60*1000);
intent.putExtra("title", "A Test Event from android app"+String.valueOf(i));
startActivity(intent);
但它只是将我发送到我的日历,让我编辑并手动插入我的活动.我想自动插入事件,而无需转到我的日历应用程序.而且,我只能使用此代码添加一个事件.这不是我想要的.我有2个String数组,一个包含日期,另一个包含事件的名称.有谁知道有没有办法做到这一点？我一直在寻找解决方案很长一段时间没有找到解决方案.如果有人帮助过我,我将不胜感激.谢谢!
我已经解决了这个问题!非常感谢你!但现在我有另一个我无法解决的问题.我有这个代码:
ContentValues cv = new ContentValues();
cv.put("calendar_id", calIds[0]);
cv.put("title", title);
//cv.put("dtstart", dtstart );
//cv.put("dtend", dtend);
cv.put("rrule", "FREQ=MONTHLY");
cv.put("description", comment );
Calendar start = Calendar.getInstance();
start.set(2012, 0, 2, 8, 0, 0);
Calendar end = Calendar.getInstance();
end.set(2012, 0, 2, 9, 0, 0);
long startTime = start.getTimeInMillis();
long endTime = end.getTimeInMillis();
cv.put("dtstart", startTime);
cv.put("dtend", endTime); …