下面的代码是接收器类
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Log.e("the time is right","yay!");
Intent i = new Intent(context.getApplicationContext() , AlarmServie.class);
context.startService(i);
}
}
以下代码是我的服务类
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;
import android.util.Log;
public class AlarmServie extends Service {
@Nullable
@Override
public IBinder onBind(Intent intent) {
Log.e("hello","hi" );
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
Log.e("onCreate:","came" );
/* NotificationManager notifyman = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Intent main_activity = new Intent(this.getApplicationContext(), MainActivity.class);
PendingIntent o = PendingIntent.getActivity(this, 0, main_activity, 0);
/*Notification noti = new Notification.Builder(this)
.setContentTitle("Reminder to Pill")
.setContentText("Click for info")
.setAutoCancel(true)
.setContentIntent(o)v
.build();*/
NotificationManager nm = (NotificationManager) this.getSystemService(NOTIFICATION_SERVICE);
Intent in = new Intent(this.getApplicationContext(), MainActivity.class);
PendingIntent pending = PendingIntent.getActivity(this, 0, in, 0);
NotificationCompat.Builder mBuilder =new NotificationCompat.Builder(AlarmServie.this);
mBuilder.setContentTitle("Pill Reminder");
mBuilder.setContentText("CLick here to View");
//mBuilder.setSound(sound);
TaskStackBuilder ts=TaskStackBuilder.create(this);
ts.addParentStack(MainActivity.class);
nm.notify(9999,mBuilder.build());
return START_STICKY;
}}
以下代码是我的清单
<uses-permission android:name="android.permission.VIBRATE"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver
android:name=".AlarmReceiver"
android:enabled="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
<activity android:name=".Set">
</activity><!-- ATTENTION: This was auto-generated to add Google Play services to your project for
App Indexing. See https://g.co/AppIndexing/AndroidStudio for more information. -->
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<service
android:name=".AlarmServie"
android:enabled="true"/>
</application>
</manifest>
我使用了一个文本框和一个计时器按钮来获取用户的文本和时间，并将其保存在数据库中。当db和系统时间匹配通知的时间必须到来但是它没有来，任何人都可以说为什么会发生这种情况。明确解释这是通过使用代码
详细解释而发生的这是我的主要活动
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import com.google.android.gms.common.api.GoogleApiClient;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
public class MainActivity extends AppCompatActivity {
Sqlitedb dbobj1;
int gh;
AlarmManager am;
Calendar c;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
@Override
protected void onCreate(Bundle savedInstanceState) {
dbobj1 = new Sqlitedb(MainActivity.this);
gh = (int) dbobj1.number();
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Calendar c = Calendar.getInstance();
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(MainActivity.this, Set.class);
startActivity(intent);
}
});
Intent my_intent = new Intent(MainActivity.this, AlarmServie.class);
am = (AlarmManager) getSystemService(ALARM_SERVICE);
Date dt = new Date();
int hour=dt.getHours();
int min=dt.getMinutes();
PendingIntent pi = PendingIntent.getBroadcast(MainActivity.this, 0, my_intent, PendingIntent.FLAG_UPDATE_CURRENT);
Cursor t = dbobj1.recenttime(hour,min);
t.moveToFirst();
c.set(Calendar.HOUR_OF_DAY, t.getInt(0));
c.set(Calendar.MINUTE, t.getInt(1));
am.set(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), pi);
populate();
}
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
//client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
//oncreate ends here
class customAdabter extends ArrayAdapter<setget> {
Context _context;
List<setget> _li;
public customAdabter(Context con, int layout, List<setget> li) {
super(con, layout, li);
_context = con;
_li = li;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
gh++;
LayoutInflater layu = (LayoutInflater) _context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = layu.inflate(R.layout.item, null);
TextView txt = (TextView) v.findViewById(R.id.item_textview1);
TextView txt1 = (TextView) v.findViewById(R.id.item_textview2);
Button btt = (Button) v.findViewById(R.id.item_button1);
btt.setId(gh);
btt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int r = v.getId();
dbobj1.deleteRow(r);
populate();
}
});
setget dataobj = _li.get(position);
txt.setText(dataobj.getPn());
txt1.setText(dataobj.getPt());
return v;
}
}
public void populate() {
List<setget> li = new ArrayList<setget>();
for (int i = 1; i <= dbobj1.number(); i++) {
setget obj = new setget();
Cursor c = dbobj1.getRow(i);
String name = c.getString(c.getColumnIndex("pillname"));
String time = c.getString(c.getColumnIndex("pilltime"));
obj.setPn(name);
obj.setPt(time);
c.close();
li.add(obj);
}
ListView lv = (ListView) findViewById(R.id.listview);
customAdabter customobj = new customAdabter(MainActivity.this, R.layout.item, li);
lv.setAdapter(customobj);
}
}
这是logcat
09-19 11:30:32.267 19426-19426/com.example.ashwin.pillreminder11 D/ActivityThread: BDC-Calling onReceive: intent=Intent { flg=0x114 cmp=com.example.ashwin.pillreminder11/.AlarmReceiver (has extras) }, receiver=com.example.ashwin.pillreminder11.AlarmReceiver@d5ea50b
09-19 11:30:32.267 19426-19426/com.example.ashwin.pillreminder11 E/the time is right: yay!
09-19 11:30:32.268 19426-19426/com.example.ashwin.pillreminder11 D/ActivityThread: BDC-RECEIVER handled : 0 / ReceiverData{intent=Intent { flg=0x114 cmp=com.example.ashwin.pillreminder11/.AlarmReceiver (has extras) } packageName=com.example.ashwin.pillreminder11 resultCode=0 resultData=null resultExtras=null}
答案 0 :(得分：0)
<receiver
android:name=".AlarmReceiver"
android:enabled="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
将其更改为
<receiver
android:name=".AlarmReceiver"
android:enabled="true">
</receiver>
并使用不同的广播接收器接收BOOT_COMPLETED广播并重置所有警报。