Android獲取WIFI 的ssid 方法適配Android9.0

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蝸牛魔方-Android獲取WIFI SSID方法，適配9.0
demo 地址：JavaExtensionUtilsForAndroid

廢話不多說了直接上程式碼

首先在Androidmanifast 中新增許可權

 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
 

## 獲取SSID 的方法如下

/**
     * 獲取SSID
     * @param activity 上下文
     * @return  WIFI 的SSID
     */
    public String getWIFISSID(Activity activity) {
         String ssid="unknown id";

        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.O||Build.VERSION.SDK_INT==Build.VERSION_CODES.P) {

            WifiManager mWifiManager = (WifiManager) activity.getApplicationContext().getSystemService(Context.WIFI_SERVICE);

            assert mWifiManager != null;
            WifiInfo info = mWifiManager.getConnectionInfo();

            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
                return info.getSSID();
            } else {
                return info.getSSID().replace("\"", "");
            }
        } else if (Build.VERSION.SDK_INT==Build.VERSION_CODES.O_MR1){

            ConnectivityManager connManager = (ConnectivityManager) activity.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
            assert connManager != null;
            NetworkInfo networkInfo = connManager.getActiveNetworkInfo();
            if (networkInfo.isConnected()) {
                if (networkInfo.getExtraInfo()!=null){
                    return networkInfo.getExtraInfo().replace("\"","");
                }
            }
        }
        return ssid;
    }
 

MainActivity方法。佈局檔案太簡單了 。不貼程式碼了

public class MainActivity extends AppCompatActivity {
    private PermissionHelper permissionHelper;

    TextView mTvSSID;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);
         mTvSSID = findViewById(R.id.tvSSID);

        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        permissionHelper = new PermissionHelper(this);
        getWifiSSid();
    }

    private void getWifiSSid() {
        permissionHelper.check(Manifest.permission.ACCESS_FINE_LOCATION).onSuccess(this::onSuccess).onDenied(this::onDenied).onNeverAskAgain(this::onNeverAskAgain).run();
    }
    private void onSuccess() {

        mTvSSID.setText(DeviceUtil.INSTANCE.getWIFISSID(this));
    }

    private void onDenied() {
        ToastUtil.INSTANCE.show(this, "許可權被拒絕，9.0系統無法獲取SSID");
    }

    private void onNeverAskAgain() {
        ToastUtil.INSTANCE.show(this, "許可權被拒絕，9.0系統無法獲取SSID,下次不會在詢問了");
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        permissionHelper.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }
}
 

Android8.1獲取方法

需要在Androidmanifast.xml檔案中新增如下許可權

  <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
  <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>

    ConnectivityManager connManager = (ConnectivityManager) activity.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
            assert connManager != null;
            NetworkInfo networkInfo = connManager.getActiveNetworkInfo();
            if (networkInfo.isConnected()) {
                if (networkInfo.getExtraInfo()!=null){
                    return networkInfo.getExtraInfo().replace("\"","");
                }
            }

9.0 以後需要申請執行時許可權

在Androidmanifast.xml檔案中新增

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>

許可權申請框架

在model 中的gradle中加入以下依賴。

  implementation 'ru.alexbykov:nopermission:1.1.2'