怎么解决安卓4.4.1和4.4.2 webview 不支持

mWebView.setWebChromeClient(new WebChromeClient() {
// 关键代码，以下函数是没有API文档的，所以在Eclipse中会报错，如果添加了@Override关键字在这里的话。
// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
MainActivity.this.startActivityForResult(
Intent.createChooser(i, "File Chooser"),
FILECHOOSER_RESULTCODE);
}

// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg,
String acceptType) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
MainActivity.this.startActivityForResult(
Intent.createChooser(i, "File Chooser"),
FILECHOOSER_RESULTCODE);
}

// For Android 4.1
public void openFileChooser(ValueCallback uploadMsg,
String acceptType, String capture) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
MainActivity.this.startActivityForResult(
Intent.createChooser(i, "File Chooser"),
MainActivity.FILECHOOSER_RESULTCODE);
}

});