webview에서 target="_blank" 링크를 열때 webview내에서가  아닌 외부의 브라우저로 여는 방법이다.

1. onCreate에 WebView설정

WebSettings set = mWebView.getSettings();
set.setSupportMultipleWindows(true);

2. onCreateWindow Override

mWebView.setWebChromeClient(new WebChromeClient() {
    @Override
    public boolean onCreateWindow(WebView view, boolean dialog, boolean userGesture, Message resultMsg)
    {
        WebView newWebView = new WebView(MainActivity.this);
        view.addView(newWebView);
        WebView.WebViewTransport transport = (WebView.WebViewTransport) resultMsg.obj;
        transport.setWebView(newWebView);
        resultMsg.sendToTarget();
        return true;
    }
});