顯示通知
public void showNotification(String message) { NotificationManager mNM= (NotificationManager) this.getSystemService(NOTIFICATION_SERVICE); Uri soundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); NotificationCompat.Builder customerRebateBuilder = new NotificationCompat.Builder(this,"my message") .setSmallIcon(R.mipmap.ic_launcher) .setContentTitle("Title") .setContentText(message) .setSound(soundUri) .setAutoCancel(true); Intent intent = new Intent(getApplicationContext(),MainActivity.class);//點通知 開啟APP if(intent != null){ PendingIntent customerRebatePendingIntent = PendingIntent.getActivity(getApplicationContext(), 0, intent, PendingIntent.FLAG_ONE_SHOT); customerRebateBuilder.setContentIntent(customerRebatePendingIntent); } mNM.notify(notifyId++, customerRebateBuilder.build()); }


範例
public class MainActivity extends AppCompatActivity { int notifyId=0; private Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = findViewById(R.id.showMessage); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { showNotification("Hi "+notifyId); } }); } public void showNotification(String message) { NotificationManager mNM= (NotificationManager) this.getSystemService(NOTIFICATION_SERVICE); Uri soundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); NotificationCompat.Builder customerRebateBuilder = new NotificationCompat.Builder(this,"my message") .setSmallIcon(R.mipmap.ic_launcher) .setContentTitle("Title") .setContentText(message) .setSound(soundUri) .setAutoCancel(true); Intent intent = new Intent(getApplicationContext(),MainActivity.class);//點通知 開啟APP if(intent != null){ PendingIntent customerRebatePendingIntent = PendingIntent.getActivity(getApplicationContext(), 0, intent, PendingIntent.FLAG_ONE_SHOT); customerRebateBuilder.setContentIntent(customerRebatePendingIntent); } mNM.notify(notifyId++, customerRebateBuilder.build()); } }

條件判斷 你就自己寫巴

恩....看不太懂耶... 請問可以說一下哪個地方是幹嘛的嗎? 麻煩了

沒事了 我用出來了@@

我模擬器是會跳通知的 不過手機不會跳? 你知道原因嗎?

痾...程式碼 貼出來看一夏...
會不會是你手機本身 關閉所有通知了?

我只打了
public void showNotification(String message) { NotificationManager mNM= (NotificationManager) this.getSystemService(NOTIFICATION_SERVICE); Uri soundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); NotificationCompat.Builder customerRebateBuilder = new NotificationCompat.Builder(this,"my message") .setSmallIcon(R.mipmap.ic_launcher) .setContentTitle("Title") .setContentText(message) .setSound(soundUri) .setAutoCancel(true); Intent intent = new Intent(getApplicationContext(),MainActivity.class);//點通知 開啟APP if(intent != null){ PendingIntent customerRebatePendingIntent = PendingIntent.getActivity(getApplicationContext(), 0, intent, PendingIntent.FLAG_ONE_SHOT); customerRebateBuilder.setContentIntent(customerRebatePendingIntent); } mNM.notify(notifyId++, customerRebateBuilder.build()); }
然後在主程式打
showNotification("Hi "+notifyId);

我用模擬器是開了APP 就會跳通知
不過我用在手機上就不會有通知
是要開權限嗎?

手機在run的時候 會有產生錯誤訊息 能貼出來?

SORRY 我又換了一台手機後 可以用了 Z3可以用 不過XZP就不能顯示

我打在try裡的 showNotification("AA"+FF); 不知為何不會顯示

所以我把他打在run showNotification("BB"+FF); 不過打在這裡 FF 是NULL 是因為他更新了，所以值空了嗎?
那有辦法拿到我FF的值嗎? 我把 Double FF ; 打在最上面一樣也是空值




private void cc(){ OkHttpClient client = new OkHttpClient(); Request request = new Request.Builder() .url("http://200.1.1.135/api.php?data=123") .build(); client.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { Log.e("error",Log.getStackTraceString(e)); } @Override public void onResponse(Call call,final Response response) throws IOException { runOnUiThread(new Runnable() { @Override public void run() { try { String jasonText = response.body().string(); // response 會是錯誤的 Log.i("datar",jasonText); getLocation(); tv.setText(jasonText); //String AA = new JSONArray(jasonText).getJSONObject(0).getString("AA"); Double AA = new JSONArray(jasonText).getJSONObject(0).getDouble("AA"); // String BB = new JSONArray(jasonText).getJSONObject(0).getString("BB"); Double BB = new JSONArray(jasonText).getJSONObject(0).getDouble("BB"); // String CC ; tv.setText("垃圾車經度 : "+AA); tv5.setText("垃圾車緯度 : "+BB); Double CC ; Double DD ; Double EE ; Double FF ; CC = (AA-longi)*(AA-longi) ; DD = (BB-latti) *(BB-latti) ; EE = CC+DD ; Math.sqrt(EE); FF = Math.sqrt(EE)*111000.1; tv1.setText(FF+"公尺"); tv3.setText(Html.fromHtml("GOOGLE地圖觀看 : "+"https://maps.google.com/maps?saddr="+BB+","+AA+"&daddr=+"+22.998583+","+120.24695)); showNotification("AA "+FF); // 打在這裡 連通知都不會跳 } catch (Exception e){ e.printStackTrace(); } showNotification("BB "+FF); // 打在這裡 FF 是空值 } }); } }); }

把FF宣告成全域變數就可以了
通知不會跳　是有錯誤　可以看一下是甚麼錯？

設成全域變數後 可以用了 感謝