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アプリはAndroid Jelly Beanでうまく動作しますが、Android Mでは動作しません。時にはInvocationTargetExceptionと表示されます。Wi-Fiホットスポットを作成するアプリでエラーを見つける方法を教えてください。
OnOfHotspot.java
// toggle wifi hotspot on or off
public static boolean configApState(Context context, boolean apState) {
WifiManager wifimanager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
wifimanager.setWifiEnabled(false);
try {
if (apState) {
WifiConfiguration netConfig = new WifiConfiguration();
netConfig.SSID = hotspotName;
netConfig.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
Method method = WifiManager.class.getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);
method.invoke(wifimanager, netConfig, apState);
Toast.makeText(context, "WiFi Hotspot \'" + config.SSID + "\' is Created!", Toast.LENGTH_SHORT).show();
return true;
} else {
Method method = WifiManager.class.getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);
method.invoke(wifimanager, config, false);
Toast.makeText(context, "WiFi Hotspot \'" + config.SSID + "\' is Disabled!", Toast.LENGTH_SHORT).show();
return true;
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
public static WifiConfiguration getApConfiguration(Context context) {
WifiConfiguration config = null;
WifiManager wifimanager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
Method[] methods = WifiManager.class.getDeclaredMethods();
for (Method m : methods) {
if (m.getName().equals("getWifiApConfiguration")) {
try {
config = (WifiConfiguration) m.invoke(wifimanager);
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
Log.d("Testing", e.getCause().toString());
}
}
}
OnOfHotspot.config = config;
return config;
}
MainActivity.java
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.enableWifiHotSpotId:
try {
if (!((editText.getText().toString()).equals(""))) {
OnOfHotspot.hotspotName = editText.getText().toString();
OnOfHotspot.getApConfiguration(this);
OnOfHotspot.configApState(this, true);
}else {
Toast.makeText(getApplicationContext(),"Please Specify Hotspot name!",Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
e.printStackTrace();
}
break;
case R.id.disableWifiHotspotId:
try {
OnOfHotspot.getApConfiguration(this);
OnOfHotspot.configApState(this, false);
} catch (Exception e) {
e.printStackTrace();
}
break;
}
}
権限
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS"/>
Logcat
07-09 14:04:23.869 29724-29724/com.juggernaut.hotspot W/System.err:java.lang.reflect.InvocationTargetException
07-09 14:04:23.874 432-3097/? D/APM-AudioPolicyManager: startOutput()--
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at java.lang.reflect.Method.invoke(Native Method)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at com.juggernaut.hotspot.OnOfHotspot.configApState(OnOfHotspot.java:47)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at com.juggernaut.hotspot.MainActivity.onClick(MainActivity.java:48)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at android.view.View.performClick(View.java:5233)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at android.view.View$PerformClick.run(View.java:21209)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at android.os.Handler.handleCallback(Handler.java:739)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at android.os.Handler.dispatchMessage(Handler.java:95)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at android.os.Looper.loop(Looper.java:152)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5497)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at java.lang.reflect.Method.invoke(Native Method)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
07-09 14:04:23.879 29724-29724/com.juggernaut.hotspot W/System.err: Caused by: java.lang.SecurityException: com.juggernaut.hotspot was not granted this
permission: android.permission.WRITE_SETTINGS.
07-9 14:04:23.883 29724-29724/com.juggernaut.hotspot W/System.err: at android.os.Parcel.readException(Parcel.java:1620)
07-09 14:04:23.883 29724-29724/com.juggernaut.hotspot W/System.err: at android.os.Parcel.readException(Parcel.java:1573)
07-09 14:04:23.883 29724-29724/com.juggernaut.hotspot W/System.err: at android.net.wifi.IWifiManager$Stub$Proxy.setWifiApEnabled(IWifiManager.java:1511)
07-09 14:04:23.883 29724-29724/com.juggernaut.hotspot W/System.err: at android.net.wifi.WifiManager.setWifiApEnabled(WifiManager.java:1590)
07-09 14:04:23.883 29724-29724/com.juggernaut.hotspot W/System.err: ... 12 more
Githubのlink
ソリューション：私はちょうどWRITE_SETTING 許可を取得するため、このメソッドを追加する必要があります。
public void writePermission() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { if (!Settings.System.canWrite(getApplicationContext())) { Intent intent = new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS, Uri.parse("package:" + getPackageName())); startActivityForResult(intent, 200); } } }アンドロイドバージョン23では、あなたは、実行時に要求権限を持っている上のonClickそして
他の人の変更を元に戻しないでください。 –
さて、私はしません。おかげで –