我在嘗試更新我的compileSdkVersion和TargetSdkversion大於22後出現此錯誤。好像我在執行doInBackground方法中的任何GUI任務,但我是無法弄清楚。我會非常感謝解決方案。致命異常:java.lang.SecurityException:需要ACCESS_COARSE_LOCATION或ACCESS_FINE_LOCATION權限
這是我的堆棧跟蹤:類WlanInfoAdapter.java:72
E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
Process: xy.abc.xyz.xy, PID: 15246
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:309)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.SecurityException: Need ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION permission to get scan results
at android.os.Parcel.readException(Parcel.java:1599)
at android.os.Parcel.readException(Parcel.java:1552)
at android.net.wifi.IWifiManager$Stub$Proxy.getScanResults(IWifiManager.java:1066) at android.net.wifi.WifiManager.getScanResults(WifiManager.java:1311)
at xy.abc.xyz.xy.config.WlanInfoAdapter.getNewItems(WlanInfoAdapter.java:72)
at xy.abc.xyz.xy.android.data.ChangeableArrayAdapter$1.doInBackground(ChangeableArrayAdapter.java:78)
at xy.abc.xyz.xy.android.data.ChangeableArrayAdapter$1.doInBackground(ChangeableArrayAdapter.java:74)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
方法是在這裏:低於changeableArrayAdapter.java類示值誤差
@Override
protected List<WlanInfo> getNewItems() {
WifiManager wifiManager = (WifiManager) getContext().getSystemService(Context.WIFI_SERVICE);
List<ScanResult> scanResults = wifiManager.getScanResults();
List<WlanInfo> infoList = new ArrayList<>(scanResults.size());
WifiInfo connectionInfo = wifiManager.getConnectionInfo();
try {
List<WifiConfiguration> configuredNetworks = wifiManager.getConfiguredNetworks();
Map<String, WifiConfiguration> configuredNetworkIds = new HashMap<>();
for (WifiConfiguration configuredNetwork : configuredNetworks) {
if (configuredNetwork.SSID != null) {
configuredNetworkIds.put(WlanInfo.cleanSSID(configuredNetwork.SSID), configuredNetwork);
} else {
wifiManager.removeNetwork(configuredNetwork.networkId);
}
}
for (ScanResult scanResult : scanResults) {
WlanInfo wlanInfo = new WlanInfo(scanResult);
WifiConfiguration configuration = configuredNetworkIds.get(wlanInfo.getSSID());
wlanInfo.setConfiguration(configuration);
wlanInfo.setIsActive(configuration != null && configuration.networkId == connectionInfo.getNetworkId());
if (showUnknown || wlanInfo.isConfigured() || wlanInfo.isOpen()) {
infoList.add(wlanInfo);
}
}
}
catch (Exception e) { e.printStackTrace(); return null; }
return infoList;
}
法中給出。它在那裏getNewItems()方法被調用: ChangeableArrayAdapter.java:78 ChangeableArrayAdapter.java:74
public void triggerRefresh() {
AsyncTask<Void, Void, List<T>> asyncTask = new AsyncTask<Void, Void, List<T>>() {
@Override
protected List<T> doInBackground(Void... objects) {
return getNewItems();
//return null;
}
粗略位置的運行時權限感謝您的完整解釋。我想知道如果我應該使LOCATION_PERMISSION_REQUEST_CODE最終staic變量並將其值設置爲1? – LanguageMaster
@LanguageMaster是的,這正是它是什麼 –
你是偉大的曼。你讓我今天一整天都感覺很好。非常感謝..工作 – LanguageMaster