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我正在創建一個應用程序，它將爲用戶提供網絡信號強度。我搜索了一下，我發現這個link，我們可以使用CellInfoGsm。但我得到安全例外：ACCESS_COARSE_LOCATION的安全例外
登錄：
Process: com.checksignal.checksignal, PID: 9732
java.lang.SecurityException: getAllCellInfo: Neither user 10122 nor current process has android.permission.ACCESS_COARSE_LOCATION.
at android.os.Parcel.readException(Parcel.java:1620)
at android.os.Parcel.readException(Parcel.java:1573)
at com.android.internal.telephony.ITelephony$Stub$Proxy.getAllCellInfo(ITelephony.java:3096)
at android.telephony.TelephonyManager.getAllCellInfo(TelephonyManager.java:2894)
at com.checksignal.checksignal.MainActivity$1.run(MainActivity.java:98)
at android.os.Handler.handleCallback(Handler.java:746)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5443)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
我在清單文件中添加所需的權限也。
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.checksignal.checksignal">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
這裏是我的MainActivity：
public class MainActivity extends AppCompatActivity {
Button _getGsmSignalStrengthButton;
TelephonyManager _telephonyManager;
ImageView _gmsStrengthImageView;
TextView _gmsStrengthTextView, _operatorName, _networkSpeed;
MyPhoneStateListener MyListener;
public static final int NETWORK_TYPE_EHRPD = 14; // Level 11
public static final int NETWORK_TYPE_EVDO_B = 12; // Level 9
public static final int NETWORK_TYPE_HSPAP = 15; // Level 13
public static final int NETWORK_TYPE_IDEN = 11; // Level 8
public static final int NETWORK_TYPE_LTE = 13; // Level 11
private Handler mHandler = new Handler();
private long mStartRX = 0;
private long mStartTX = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initializeViews();
// Get a reference to the TelephonyManager and instantiate the GsmSignalStrengthListener.
// These will be used by the Button's OnClick event handler.
MyListener = new MyPhoneStateListener();
_telephonyManager.listen(MyListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
_operatorName.setText(_telephonyManager.getNetworkOperatorName());
Toast.makeText(getApplicationContext(),checkConnectivity(),Toast.LENGTH_LONG);
Log.d("connectivity",checkConnectivity());
mStartRX = TrafficStats.getTotalRxBytes();
mStartTX = TrafficStats.getTotalTxBytes();
if (mStartRX == TrafficStats.UNSUPPORTED || mStartTX == TrafficStats.UNSUPPORTED) {
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("Uh Oh!");
alert.setMessage("Your device does not support traffic stat monitoring.");
alert.show();
} else {
mHandler.postDelayed(mRunnable, 1000);
}
}
private void initializeViews() {
_telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
_gmsStrengthTextView = (TextView) findViewById(R.id.operator_name);
_operatorName = (TextView) findViewById(R.id.op_name);
_networkSpeed = (TextView)findViewById(R.id.network_speed);
// _gmsStrengthImageView = (ImageView) findViewById(R.id.imageView1);
_getGsmSignalStrengthButton = (Button) findViewById(R.id.myButton);
}
private final Runnable mRunnable = new Runnable() {
public void run() {
TextView RX = (TextView) findViewById(R.id.RX);
TextView TX = (TextView) findViewById(R.id.TX);
long rxBytes = TrafficStats.getTotalRxBytes() - mStartRX;
double receiveKb = rxBytes/1024;
RX.setText("receive Bytes:" + Double.toString(receiveKb));
long txBytes = TrafficStats.getTotalTxBytes() - mStartTX;
double transmitKb = txBytes/1024;
TX.setText("Transmit Bytes: " + Double.toString(transmitKb));
//GET SIGNAL STRENGTH OF MOBILE NETWORK
CellInfoGsm cellinfogsm = (CellInfoGsm)_telephonyManager.getAllCellInfo().get(0);
CellSignalStrengthGsm cellSignalStrengthGsm = cellinfogsm.getCellSignalStrength();
cellSignalStrengthGsm.getDbm();
_networkSpeed.setText(cellSignalStrengthGsm.getDbm());
mHandler.postDelayed(mRunnable, 1000);
}
};
private String checkConnectivity() {
ConnectivityManager manager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = manager.getActiveNetworkInfo();
boolean isConnected = activeNetwork != null && activeNetwork.isConnectedOrConnecting();
String networkType ="";
if (isConnected) {
if (activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE) {
Toast.makeText(getApplicationContext(), "your mobile network is connected", Toast.LENGTH_LONG).show();
switch (activeNetwork.getSubtype()) {
case TelephonyManager.NETWORK_TYPE_1xRTT:
networkType = "NETWORK TYPE 1xRTT"; // ~ 50-100 kbps
break;
case TelephonyManager.NETWORK_TYPE_CDMA:
networkType = "NETWORK TYPE CDMA (3G) Speed: 2 Mbps";// ~ 14-64 kbps
break;
case TelephonyManager.NETWORK_TYPE_EDGE:
networkType = "NETWORK TYPE EDGE (2.75G) Speed: 100-120 Kbps"; // ~
// 50-100
// kbps
break;
case TelephonyManager.NETWORK_TYPE_EVDO_0:
networkType = "NETWORK TYPE EVDO_0"; // ~ 400-1000 kbps
break;
case TelephonyManager.NETWORK_TYPE_EVDO_A:
networkType = "NETWORK TYPE EVDO_A"; // ~ 600-1400 kbps
break;
case TelephonyManager.NETWORK_TYPE_GPRS:
networkType = "NETWORK TYPE GPRS (2.5G) Speed: 40-50 Kbps"; // ~ 100
// kbps
break;
case TelephonyManager.NETWORK_TYPE_HSDPA:
networkType = "NETWORK TYPE HSDPA (4G) Speed: 2-14 Mbps"; // ~ 2-14
// Mbps
break;
case TelephonyManager.NETWORK_TYPE_HSPA:
networkType = "NETWORK TYPE HSPA (4G) Speed: 0.7-1.7 Mbps"; // ~
// 700-1700
// kbps
break;
case TelephonyManager.NETWORK_TYPE_HSUPA:
networkType = "NETWORK TYPE HSUPA (3G) Speed: 1-23 Mbps"; // ~ 1-23
// Mbps
break;
case TelephonyManager.NETWORK_TYPE_UMTS:
networkType = "NETWORK TYPE UMTS (3G) Speed: 0.4-7 Mbps"; // ~ 400-7000
// kbps
// NOT AVAILABLE YET IN API LEVEL 7
break;
case MainActivity.NETWORK_TYPE_EHRPD:
networkType = "NETWORK TYPE EHRPD"; // ~ 1-2 Mbps
break;
case MainActivity.NETWORK_TYPE_EVDO_B:
networkType = "NETWORK_TYPE_EVDO_B"; // ~ 5 Mbps
break;
case MainActivity.NETWORK_TYPE_HSPAP:
networkType = "NETWORK TYPE HSPA+ (4G) Speed: 10-20 Mbps"; // ~ 10-20
// Mbps
break;
case MainActivity.NETWORK_TYPE_IDEN:
networkType = "NETWORK TYPE IDEN"; // ~25 kbps
break;
case MainActivity.NETWORK_TYPE_LTE:
networkType = "NETWORK TYPE LTE (4G) Speed: 10+ Mbps"; // ~ 10+ Mbps
break;
// Unknown
case TelephonyManager.NETWORK_TYPE_UNKNOWN:
networkType = "NETWORK TYPE UNKNOWN";
break;
default:
networkType = "";
break;
}
}
else if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI){
networkType = "You are connected to WIFI";
}
}
else{
networkType = "You are not connected to any network";
}
return networkType ;
}
@Override
protected void onPause() {
super.onPause();
_telephonyManager.listen(MyListener, PhoneStateListener.LISTEN_NONE);
}
@Override
protected void onResume() {
super.onResume();
_telephonyManager.listen(MyListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
}
public class MyPhoneStateListener extends PhoneStateListener {
@Override
public void onSignalStrengthsChanged(SignalStrength signalStrength) {
super.onSignalStrengthsChanged(signalStrength);
/*Toast.makeText(getApplicationContext(), "Go to Firstdroid!!! GSM Cinr = "
+ String.valueOf(signalStrength.getGsmSignalStrength()), Toast.LENGTH_SHORT).show();*/
}
}
}
如何解決這個安全異常，或有任何其他方式輪。
你需要問運行許可ACCESS_COARSE_LOCATION如果您運行的APK> = 23 API –
可能重複[如何在運行時檢查的權限授予？（https://stackoverflow.com/questions/30549561/how-to-check-grants-permissions-at-run-time）和bazillions類似的問題 – Selvin
[Android權限可能重複不起作用，即使我已經聲明]（https://stackoverflow.com/questions/ 32635704/android-permission-doesnt-work-even-if-i-have-declared-it） – Selvin