使用无障碍服务获取通知图标 [英] Get notification icon using an accessibility service
问题描述
有没有办法获取系统通知的图标?我可以通过无障碍服务获得通知包裹.我什至可以从中获取图标的 id,但我被困在那里.我不知道如何使用 id 来获取实际位图以便我可以显示它,因为它不是来自我的 apk.
Is there any way to get icons of system notifications? I can get a notification parcel with Accessibility service. I can even get the id of the icon from it, but I am stuck there. I have no idea how to use the id to get the actual bitmap so I can display it, because it is not from my apk.
这是我目前的代码:
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
Log.d("onAccessibilityEvent");
if (event.getEventType() == AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED) {
if (event.getParcelableData() instanceof Notification) {
Notification notification = (Notification) event.getParcelableData();
Log.d("ticker: " + notification.tickerText);
Log.d("icon: " + notification.icon);
Log.d("largeIcon: " + notification.largeIcon);
}
Log.d("notification: " + event.getText());
}
}
尝试使用此 ID 会导致
trying to use this id results in
android.content.res.Resources$NotFoundException:资源 ID #0x7f0200ad
android.content.res.Resources$NotFoundException: Resource ID #0x7f0200ad
推荐答案
所以我设法通过在 RemoteViews 中搜索第一个 ImageView 来实现这一点
So I managed to accomplish this by searching for the first ImageView in the RemoteViews
extractImage(notification.contentView);
...
private void extractImage(RemoteViews views) {
LinearLayout ll = new LinearLayout(getApplicationContext());
View view = views.apply(getApplicationContext(), ll);
drawable = searchForBitmap(view);
Log.d("Drawable: " + drawable);
}
private Drawable searchForBitmap(View view) {
if (view instanceof ImageView) {
return ((ImageView) view).getDrawable();
}
if (view instanceof ViewGroup) {
ViewGroup viewGroup = (ViewGroup) view;
for (int i = 0; i < viewGroup.getChildCount(); i++) {
Drawable result = searchForBitmap(viewGroup.getChildAt(i));
if (result != null) {
return result;
}
}
}
return null;
}
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