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我寫的輔助服務,以避免USSD請求過程中AlertWindow開幕:Xamarin.Android:如何開啓無障礙服務永久
[Service(Label = "BalanceAccessibilityService", Permission = "android.permission.BIND_ACCESSIBILITY_SERVICE")]
[IntentFilter(new string[] { "android.accessibilityservice.AccessibilityService" })]
public class BalanceAccessibilityService : AccessibilityService
{
static readonly string Tag = "SmsService:" + typeof(BalanceAccessibilityService).Name;
protected override void OnServiceConnected()
{
base.OnServiceConnected();
AccessibilityServiceInfo info = new AccessibilityServiceInfo();
info.Flags = AccessibilityServiceFlags.Default;
info.PackageNames = new string[] { "com.android.phone" };
info.EventTypes = EventTypes.WindowStateChanged;
info.FeedbackType = FeedbackFlags.Generic;
SetServiceInfo(info);
}
public override void OnAccessibilityEvent(AccessibilityEvent e)
{
Log.Info(Tag, $"onAccessibilityEvent: type = {e.EventType.ToString()} package = {e.PackageName}");
AccessibilityNodeInfo info = e.Source;
if (e.EventType == EventTypes.WindowStateChanged && !e.PackageName.Equals("com.android.phone"))
return;
if (e.EventType == EventTypes.WindowContentChanged && (info == null || !info.ClassName.Equals("android.widget.TextView")))
return;
if (e.EventType == EventTypes.WindowContentChanged && TextUtils.IsEmpty(info.Text))
return;
if (Build.VERSION.SdkInt >= BuildVersionCodes.M)
PerformGlobalAction(GlobalAction.Back);
else
{
Intent intent = new Intent(Intent.ActionCloseSystemDialogs);
SendBroadcast(intent);
}
}
public override void OnInterrupt()
{
Log.Info(Tag, "OnInterrupt");
}
}
所有的工作,但問題是,當我的應用程序停止設置開關 - >輔助功能 - >服務 - > BalanceAccessibilityService關閉。因此,如果我再次啓動我的應用程序而無需再次用手切換此切換器,則我的服務無法啓動。現在,我用這樣的代碼,開關等它在MainActivity的onCreate方法:
Intent intent = new Intent(Settings.ActionAccessibilitySettings);
StartActivityForResult(intent, 0);
,但我認爲這是不正常的,因爲其他服務,如電網無污染或Android援助是足夠多的將其切換一次,他們永遠不會自行關閉。 有人可以告訴我我犯了什麼錯誤嗎?
您是否每次都使用VS啓動您的應用程序? –
@ ElvisXia-MSFT,我不確定我是否試圖用手啓動它...我現在嘗試 – Hermann
@ ElvisXia-MSFT,是的,非常感謝!問題是我使用Xamarin Studio啓動我的應用程序。 – Hermann