Android / Java的新手,我正在玩AddProximityAlert()。我下面有以下代码块,并不断出错。有人可以解释Eclipse在说什么,以及如何解决getBroadcast和registerReceiver出现的错误吗?
在SecondaryActivity.java文件中,我有2个广播接收器,这可能是原因吗?
SecondaryActivity.java:
public class SecondaryActivity extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {
.
.
.
lm = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
double latitude = location.getLatitude();
double longitude = location.getLongitude();
float radius = 100f;
long expiration = -1;
final String PROX_ALERT_INTENT = "com.example.test";
Intent intent = new Intent(PROX_ALERT_INTENT);
PendingIntent proximityIntent = PendingIntent.**getBroadcast**(this, 0, intent, 0);
lm.addProximityAlert(latitude, longitude, radius, expiration, proximityIntent);
IntentFilter filter = new IntentFilter(PROX_ALERT_INTENT);
**registerReceiver**(new ProximityIntentReceiver(), filter);
.
.
.
private class ProximityIntentReceiver extends BroadcastReceiver {
...
getBroadcast:类型为PendingIntent的方法getBroadcast(Context,int,Intent,int)不适用于自变量(SecondaryActivity,int,Intent,int)
registerReceiver:未为类型SecondaryActivity类型定义方法registerReceiver(SecondaryActivity.ProximityIntentReceiver,IntentFilter)
最佳答案
因为要扩展BroadcastReceiver,所以需要使用:
PendingIntent.getBroadcast(context, 0, intent, 0)
和
context.registerReceiver()
引用Context类。
另外,由于
SecondaryActivity
不是活动,因此为BroadcastReceiver SecondaryActivity
命名也有些混乱。关于java - 实现AddProximityAlert,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/13017290/