我创建了一个自定义通知，用于从给定 URL 下载 mp3 文件。现在我需要知道如何将
pausecancel这是自定义通知的部分代码：
if (!downloadUrl.toString().isEmpty()) {
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(downloadUrl));
request.setMimeType("audio/MP3");
request.setTitle(vMeta.getTitle());
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_HIDDEN);
request.setDestinationInExternalPublicDir(storage, vMeta.getTitle() + extension);
final DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
final long id = manager.enqueue(request);
registerReceiver(new DownloadReceiver(id, storage, vMeta.getTitle() + extension),
new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
mBuilder = new NotificationCompat.Builder(getApplicationContext());
Intent intent = new Intent();
PendingIntent pendingIntent = PendingIntent.getActivity(getApplicationContext(), 0, intent, 0);
mBuilder.setContentIntent(pendingIntent);
mBuilder.setSmallIcon(R.drawable.ic_music_video_white_24dp);
mBuilder.setContentTitle("Downloading");
mBuilder.setContentText(vMeta.getTitle());
mBuilder.setOngoing(false);
//mBuilder.addAction();
mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
new Thread(new Runnable() {
@Override
public void run() {
boolean downloading = true;
while (downloading) {
DownloadManager.Query q = new DownloadManager.Query();
q.setFilterById(id);
Cursor cursor = manager.query(q);
cursor.moveToFirst();
if (cursor != null && cursor.moveToFirst()) {
bytes_downloaded = cursor.getInt(cursor
.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
bytes_total = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
dl_progress = (int)((bytes_downloaded * 100 l) / bytes_total);
}
mNotificationManager.notify(001, mBuilder.build());
if (cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) == DownloadManager.STATUS_SUCCESSFUL) {
downloading = false;
mBuilder.setContentTitle("Download complete")
.setOngoing(false)
.setAutoCancel(true)
.setProgress(100, 100, false);
mNotificationManager.notify(001, mBuilder.build());
}
runOnUiThread(new Runnable() {
@Override
public void run() {
mBuilder.setContentTitle("Downloading: " + dl_progress + "%");
mBuilder.setProgress(100, dl_progress, false);
mNotificationManager.notify(001, mBuilder.build());
}
});
cursor.close();
}
}
}).start();
}
public class DownloadReceiver extends BroadcastReceiver {
private long id;
private String dirType;
private String subPath;
public DownloadReceiver(long id, String dirType, String subPath) {
this.id = id;
this.dirType = dirType;
this.subPath = subPath;
}
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1) == id) {
MainActivity.this.unregisterReceiver(this);
File oldFile = new File(Environment.getExternalStoragePublicDirectory(dirType), subPath);
String newSubPath = subPath.substring(0, subPath.lastIndexOf('.')) + "|MEGA" + ".mp3";
File newFile = new File(Environment.getExternalStoragePublicDirectory(dirType), newSubPath);
Boolean result = oldFile.renameTo(newFile);
Toast.makeText(context, "Download " + (result ? "succeeded" : "failed"), Toast.LENGTH_SHORT).show();
}
}
}
您需要使用媒体控制将特定操作设置为通知，您可以添加具有相对挂起意图的特定操作
.addAction(R.drawable.ic_prev, "Previous", prevPendingIntent)
.addAction(R.drawable.ic_pause, "Pause", pausePendingIntent)
.addAction(R.drawable.ic_next, "Next", nextPendingIntent)
您还需要使用以下代码设置媒体样式
.setStyle(MediaNotificationCompat.MediaStyle()
.setShowActionsInCompactView(1 /* #1: pause button \*/)
.setMediaSession(mMediaSession.getSessionToken()))
您还可以查看此链接以获取更多说明。
参考一个简单的例子，一切都在代码中：
public class MainActivity extends AppCompatActivity {
private DownloadReceiver downloadReceiver = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
findViewById(R.id.button1).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// notifyFirst();
notifySecondNotification();
}
});
}
private void init() {
downloadReceiver = new DownloadReceiver();
IntentFilter intentFilter = new IntentFilter(DownloadReceiver.ACTION_1);
intentFilter.addAction(DownloadReceiver.ACTION_2);
registerReceiver(downloadReceiver, intentFilter);
}
private void notifySecondNotification() {
Intent button1I = new Intent(DownloadReceiver.ACTION_1);
PendingIntent button1PI = PendingIntent.getBroadcast(this, 0, button1I, 0);
Intent button2I = new Intent(DownloadReceiver.ACTION_2);
PendingIntent button2PI = PendingIntent.getBroadcast(this, 0, button2I, 0);
/*
* use RemoteViews to custom notification layout
* R.layout.notification
*/
RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.notification);
/*
* bind click event
*/
remoteViews.setOnClickPendingIntent(R.id.notificationButton1, button1PI);
remoteViews.setOnClickPendingIntent(R.id.notificatinoButton2, button2PI);
Notification notification = new NotificationCompat.Builder(this)
.setTicker("tttttttttt")
.setContentTitle("setContentTitle")
.setContentText("setContentText")
.setSmallIcon(android.R.drawable.ic_menu_report_image)
/**
* set remoteViews
*/
.setContent(remoteViews)
.build();
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(0, notification);
}
@Override
public void onDestroy() {
super.onDestroy();
unregisterReceiver(downloadReceiver);
}
}
您的下载接收器示例：
public class DownloadReceiver extends BroadcastReceiver {
public static final String ACTION_1 = "Press11111";
public static final String ACTION_2 = "Press22222";
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
assert action != null;
String toastStr = "you touch";
if (action.equals(ACTION_1)) {
//download......
Toast.makeText(context, toastStr + "1111111", Toast.LENGTH_SHORT).show();
} else if (action.equals(ACTION_2)) {
//cancle download......
Toast.makeText(context, toastStr + "2222222", Toast.LENGTH_SHORT).show();
}
}
}
通知.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/notificationLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFAADD"
android:orientation="horizontal" >
<Button
android:id="@+id/notificationButton1"
android:layout_width="100dp"
android:layout_height="100dp"
android:background="@drawable/abdroid" />
<Button
android:id="@+id/notificatinoButton2"
android:layout_width="100dp"
android:layout_height="100dp"
android:background="@drawable/abdroid"/>
</LinearLayout>