我正在使用本教程 http://chrisrisner.com/31-Days-of-Android--Day-16%E2%80%93Notifications 用于在通知栏中显示应用程序，但在通知栏中连续显示我的图标我想要显示或在特定时间段后发出警报。我该怎么办？
public class DaySixteenActivity extends BaseActivity {
private TextView lblTextViewOne;
private EditText editText1;
public static int notificationId = 0;
public static String MyStaticString;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Log.i("DaySixteenActivity", "onCreate Start");
lblTextViewOne = (TextView) findViewById(R.id.lblTextViewOne);
lblTextViewOne.setText(R.string.test_one);
editText1 = (EditText) findViewById(R.id.editText1);
editText1.setText(R.string.test_one);
Button button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
lblTextViewOne.setText(editText1.getText());
String notificationService = Context.NOTIFICATION_SERVICE;
NotificationManager notificationManager =
(NotificationManager) getSystemService(notificationService);
Notification notification = new
Notification(R.drawable.cherry_icon,
"Hello Notification!", System.currentTimeMillis());
Intent notificationIntent = new
Intent(getApplicationContext(), DaySixteenActivity.class);
PendingIntent contentIntent =
PendingIntent.getActivity(getApplicationContext(), 0,
notificationIntent, 0);
notification.setLatestEventInfo(getApplicationContext(),
"Notification Title",
"CherryApplication", contentIntent);
notificationManager.notify(1, notification);
}
});
Log.i("DaySixTeenActivity", "onCreate End");
}
}
public class MyApplication extends Application {
private String myApplicationString;
public String getMyApplicationString() {
return myApplicationString;
}
public void setMyApplicationString(String myApplicationString) {
this.myApplicationString = myApplicationString;
}
}
public class PassableObject implements Parcelable {
private String myStringValue;
public PassableObject() {}
public PassableObject(Parcel inParcel) {
myStringValue = inParcel.readString();
}
public int describeContents() {
return 0;
}
public abstract class BaseActivity extends Activity {
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.options_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.item1:
startActivity(new Intent(getApplicationContext(),
DaySixteenActivity.class));
//End the current activity
return true;
default:
return super.onContextItemSelected(item);
}
}
}
public void writeToParcel(Parcel outParcel, int flags) {
outParcel.writeString(myStringValue);
}
public String getMyStringValue() {
return myStringValue;
}
public void setMyStringValue(String myStringValue) {
this.myStringValue = myStringValue;
}
public static final Parcelable.Creator<PassableObject> CREATOR
= new Parcelable.Creator<PassableObject>() {
public PassableObject createFromParcel(Parcel in) {
return new PassableObject(in);
}
public PassableObject[] newArray(int size) {
return new PassableObject[size];
}
};
}