WebView 错误码整理

在使用WebView中，我们不可避免的会接触到WebView加载失败的异常处理的需求，这时候，需要我们监听失败的方法也就是onReceivedError方法：

public class CustomWebViewClient extends WebViewClient {

    @Override
    public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
        super.onReceivedError(view, request, error);
        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (error.getErrorCode() == ERROR_HOST_LOOKUP) {
                view.loadUrl("about:blank");
            }
        }
    }

    @Override
    public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
        super.onReceivedError(view, errorCode, description, failingUrl);
        if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
            if (errorCode == ERROR_HOST_LOOKUP) {
                view.loadUrl("about:blank");
            }
        }
    }
}

下面是errorCode的列举

/** Generic error */
public static final int ERROR_UNKNOWN = -1;
/** Server or proxy hostname lookup failed */
public static final int ERROR_HOST_LOOKUP = -2;
/** Unsupported authentication scheme (not basic or digest) */
public static final int ERROR_UNSUPPORTED_AUTH_SCHEME = -3;
/** User authentication failed on server */
public static final int ERROR_AUTHENTICATION = -4;
/** User authentication failed on proxy */
public static final int ERROR_PROXY_AUTHENTICATION = -5;
/** Failed to connect to the server */
public static final int ERROR_CONNECT = -6;
/** Failed to read or write to the server */
public static final int ERROR_IO = -7;
/** Connection timed out */
public static final int ERROR_TIMEOUT = -8;
/** Too many redirects */
public static final int ERROR_REDIRECT_LOOP = -9;
/** Unsupported URI scheme */
public static final int ERROR_UNSUPPORTED_SCHEME = -10;
/** Failed to perform SSL handshake */
public static final int ERROR_FAILED_SSL_HANDSHAKE = -11;
/** Malformed URL */
public static final int ERROR_BAD_URL = -12;
/** Generic file error */
public static final int ERROR_FILE = -13;
/** File not found */
public static final int ERROR_FILE_NOT_FOUND = -14;
/** Too many requests during this load */
public static final int ERROR_TOO_MANY_REQUESTS = -15;