我刚开始开发一个android应用程序,它有一个web视图。我希望从特定时间开始每15分钟重新加载webview,如果我理解正确,我需要使用AlarmManager来完成此操作。但我真的不知道如何使用AlarmManager,所以有人可以帮我解决这个问题?也许小例子或什么?在特殊时间重新加载webview
谢谢!
另外,仅供参考我已看过文件。
UPDATE 所以我想在这里实现AlarmManager ..不要以为它的工作... 这里是我的活动文件...
public class MainActivity extends Activity {
// to make our alarm manager
AlarmManager alarmManager;
WebView myWebView;
private PendingIntent pendingIntent;
Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
this.context = this;
//initialize alarm manager
//alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
// create instance of a calendar
//Calendar calendar = Calendar.getInstance();
// create an intent to Alarm Receiver class
Intent alarmIntent = new Intent(this.context, AlarmReceiver.class);
pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, alarmIntent, 0);
myWebView = (WebView) findViewById(R.id.webview);
myWebView.setWebViewClient(new WebViewClient());
myWebView.loadUrl("<some url goes in here>");
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
reloadWebView();
}
private void reloadWebView(){
AlarmManager alarmManger = (AlarmManager)getSystemService(ALARM_SERVICE);
int interval = 1000*60*15;
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 4);
calendar.set(Calendar.MINUTE,0);
alarmManger.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), interval, pendingIntent);
}
}
和这里的AlarmReceiver 类公共类AlarmReceiver扩展广播接收器{
WebView myWebView;
@Override
public void onReceive(Context context, Intent intent) {
myWebView.reload();
Toast.makeText(context, "I'm running", Toast.LENGTH_SHORT).show();
}
}
谁能告诉我什么,我做错了......? 谢谢!
http://stacktips.com/tutorials/android/repeat-alarm-example注册-in-android –