我想从ContentObserver的onChange()方法中激活一个intent.我正在尝试在发送SMS时运行服务,因此ContentObserver,但
Eclipse给我错误,因为它无法解析“上下文”.下面是我的课程代码.
public class SmsObserver extends ContentObserver {
public SmsObserver(Handler handler) {
super(handler);
// TODO Auto-generated constructor stub
}
@Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
// On outgoing SMS,do this
Intent update = new Intent(context,UpdateService.class);
PendingIntent pendingIntent = PendingIntent.getService(context,update,0);
try {
pendingIntent.send();
} catch (CanceledException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
解决方法
您是否有某些原因在创建实例时无法将应用程序上下文传递给SmsObserver？
public class SmsObserver extends ContentObserver {
private Context context;
public SmsObserver(Handler handler,Context context) {
super(handler);
this.context = context;
}
}
调用类：
new SmsObserver(handler,getApplicationContext())
