我正在尝试从通知栏中读取传入的WhatsApp消息。
我使用以下代码来执行此操作,
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public class MyAccessibilityService extends AccessibilityService {
private final AccessibilityServiceInfo info = new AccessibilityServiceInfo();
private static final String TAG = "MyAccessibilityService";
public static TextView title;
public static TextView inbox;
public static TextView text;
@Override
protected void onServiceConnected()
{
Log.d("onServiceConnected", "ServiceConnected");
try
{
AccessibilityServiceInfo info = new AccessibilityServiceInfo();
info.eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED;
info.packageNames = new String[]
{"com.whatsapp"};
info.feedbackType = AccessibilityServiceInfo.FEEDBACK_ALL_MASK;
info.notificationTimeout = 100;
setServiceInfo(info);
}
catch(Exception e)
{
Log.d("ERRORonServiceConnected", e.toString());
}
}
@Override
public void onAccessibilityEvent(AccessibilityEvent event)
{
try
{
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
Parcelable data = event.getParcelableData();
if(data != null)
{
Notification notification = (Notification) data;
RemoteViews remoteView = notification.contentView;
ViewGroup localView = (ViewGroup) inflater.inflate(remoteView.getLayoutId(), null);
remoteView.reapply(getApplicationContext(), localView);
Resources resources = null;
PackageManager pkm = getPackageManager();
try
{
resources = pkm.getResourcesForApplication("com.whatsapp");
}
catch (PackageManager.NameNotFoundException e)
{
e.printStackTrace();
}
if (resources == null)
return;
int TITLE = resources.getIdentifier("android:id/title", null, null);
int INBOX = resources.getIdentifier("android:id/big_text", null, null);
int TEXT = resources.getIdentifier("android:id/text", null, null);
String packagename = String.valueOf(event.getPackageName());
title = (TextView) localView.findViewById(TITLE);
inbox = (TextView) localView.findViewById(INBOX);
text = (TextView) localView.findViewById(TEXT);
Log.d("NOTIFICATION Package : ", packagename);
Log.d("NOTIFICATION Title : ", title.getText().toString());
Log.d("got x messages : ", text.getText().toString());
Log.d("NOTIFICATION inbox : ", inbox.getText().toString());
}
}
catch(Exception e)
{
Log.e("onAccessibilityEvent", e.toString());
}
}
}
收到WhatsApp消息时,它会在日志中显示以下错误
E/onAccessibilityEvent﹕ java.lang.NullPointerException: Attempt to invoke virtual method 'int android.widget.RemoteViews.getLayoutId()'on a null object reference
注意: 我没有添加任何特定权限。 请帮我解决错误。我对此特别陌生。
答案 0 :(得分:0)
试试这个,下面的代码适合我 -
<?xml version="1.0" encoding="utf-8"?>
<accessibility-service
xmlns:android="http://schemas.android.com/apk/res/android"
android:accessibilityEventTypes="typeNotificationStateChanged"
android:accessibilityFeedbackType="feedbackSpoken"
android:notificationTimeout="100" />
希望它会对你有所帮助。
在你的res文件夹中创建一个名为xml的文件夹 - 在其中创建一个名为“accessibilityservice”的xml并粘贴到代码下面 -
<service
android:name=".YourServiceClassName"
android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE"
>
<intent-filter>
<action
android:name="android.accessibilityservice.AccessibilityService" />
</intent-filter>
<meta-data
android:name="android.accessibilityservice"
android:resource="@xml/accessibilityservice" />
</service>
和内部清单将您的服务标签更新为以下代码 -
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