我們會發現，越來越多的手機軟體，都會使用「通知 Notification」這項功能，主要用來提醒新訊息、公告或是提示訊息等...
如圖片所示：
寫法其實很簡單，我們寫一個測試程式利用輸入文字送出通知訊息。
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width= "match_parent"
android:layout_height= "match_parent"
android:paddingBottom= "@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight= "@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id= "@+id/textView1"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop= "20dp"
android:text= "@string/input"
android:textSize= "20sp" />
<Button
android:id= "@+id/button1"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_alignBaseline="@+id/textView1"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text= "@string/send"
android:textSize= "16sp" />
<EditText
android:id= "@+id/editText1"
android:layout_width= "wrap_content"
android:layout_height= "wrap_content"
android:layout_alignBaseline="@+id/textView1"
android:layout_toLeftOf= "@id/button1"
android:layout_toRightOf= "@+id/textView1"
android:ems= "10"
android:hint= ""
android:inputType= "text"
android:textSize= "16sp" >
<requestFocus />
</EditText >
</RelativeLayout>
public class MainActivity extends Activity {
private Button btnSend;
private EditText etMessage;
private int i = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout. activity_main);
btnSend = (Button) findViewById(R.id. button1);
etMessage = (EditText) findViewById(R.id. editText1);
btnSend.setOnClickListener( new View.OnClickListener() {
@Override
public void onClick(View view) {
sendNotification( etMessage.getText().toString());
etMessage.setText( "");
}
});
}
public void sendNotificationOld(String message) {
// -- 舊的寫法
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE );
Notification notification = new Notification(R.drawable. ic_launcher,
message, System. currentTimeMillis());
PendingIntent contentIndent = PendingIntent.getActivity(
MainActivity. this, 0, new Intent(MainActivity.this,
MainActivity. class), PendingIntent.FLAG_UPDATE_CURRENT );
notification. setLatestEventInfo(MainActivity. this, "Notification " + i,
message, contentIndent) ; // 加i是為了顯示多條Notification
notificationManager.notify( i, notification);
i++;
// --
}
@SuppressWarnings("deprecation")
public void sendNotification(String message) {
try {
// -- 新的寫法
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE );
Builder builder = new Notification.Builder(MainActivity.this );
PendingIntent contentIndent = PendingIntent.getActivity(
MainActivity. this, 0, new Intent(MainActivity.this,
MainActivity. class),
PendingIntent. FLAG_UPDATE_CURRENT);
builder.setContentIntent(contentIndent)
.setSmallIcon(R.drawable. ic_launcher)
// 設置狀態列裡面的圖示（小圖示）
.setLargeIcon(
BitmapFactory. decodeResource(this.getResources(),
R.drawable. icon)) // 下拉下拉清單裡面的圖示（大圖示）
.setTicker(message) // 設置狀態列的顯示的資訊
.setWhen(System. currentTimeMillis())// 設置時間發生時間
.setAutoCancel( false) // 設置可以清除
.setContentTitle( "Notification " + i) // 設置下拉清單裡的標題
.setContentText(message); // 設置上下文內容
Notification notification = builder.getNotification();
// notification.defaults |= Notification.DEFAULT_SOUND;
notification. sound = Uri
. parse("file:///sdcard/Notifications/hangout_ringtone.m4a");
notification. sound = Uri. withAppendedPath(
Audio.Media. INTERNAL_CONTENT_URI, "6");
notification. sound = Uri.parse("android.resource://"
+ getPackageName() + "/" + R.raw.koko);
// 後面的設定會蓋掉前面的
// 振動
notification. defaults |= Notification.DEFAULT_VIBRATE ; // 某些手機不支援 請加
// try catch
// 閃光燈
notification. defaults |= Notification.DEFAULT_LIGHTS; // 測試沒反應
// 加i是為了顯示多條Notification
notificationManager.notify(1, notification);
i++;
// --
} catch (Exception e) {
}
}
}
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE );
Notification notification = new Notification(R.drawable. ic_launcher ,
message, System. currentTimeMillis());
PendingIntent contentIndent = PendingIntent.getActivity(
MainActivity. this, 0, new Intent(MainActivity.this ,
MainActivity. class), PendingIntent.FLAG_UPDATE_CURRENT );
notification. setLatestEventInfo(MainActivity. this , "Notification " + i,
message, contentIndent) ;
notificationManager.notify( i, notification);
i++;
新的寫法
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE );
Builder builder = new Notification.Builder(MainActivity.this );
PendingIntent contentIndent = PendingIntent.getActivity(
MainActivity. this, 0, new Intent(MainActivity.this , MainActivity. class),
PendingIntent. FLAG_UPDATE_CURRENT);
builder.setContentIntent(contentIndent)
.setSmallIcon(R.drawable. ic_launcher)
// 設置狀態列裡面的圖示（小圖示）
.setLargeIcon(BitmapFactory. decodeResource( this.getResources(),
R.drawable. icon)) // 通知清單裡面的圖示（大圖示）
.setTicker(message) // 設置狀態列的顯示的資訊
.setWhen(System. currentTimeMillis()) // 設置發生時間
.setContentTitle( "Notification " + i) // 設置通知清單裡的標題
.setContentText(message); // 設置內容
Notification notification = builder.getNotification();
notificationManager.notify(1, notification);
i++;
設置通知音效的部份，有幾種寫法：
1 設定為手機的預設鈴聲
notification.defaults |= Notification.DEFAULT_SOUND;
notification. sound = Uri. parse("file:///sdcard/Notifications/hangout_ringtone.m4a");
notification. sound = Uri. withAppendedPath(Audio.Media. INTERNAL_CONTENT_URI, "6");
notification. sound = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.ring);
程式範例附件下載
沒有留言:
張貼留言