我正在尝试在我的主要活动中获取 WebView 的当前 URL,并将其显示为自定义 DialogPreference 中的用户的 TextView。我现在的困难是每次我调用它时,它都会返回一个空值。
这是我的自定义 DialogPreference 代码:
public class CustomAlertPreference extends DialogPreference {
String currentURL = "HARDCODED TEST";
public CustomAlertPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setDialogLayoutResource(R.layout.custom_alert_preference);
setPositiveButtonText(android.R.string.ok);
setNegativeButtonText(android.R.string.cancel);
}
@Override
protected void onBindDialogView(View view) {
LayoutInflater layoutInflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view2 = layoutInflater.inflate(R.layout.activity_main, null);
WebView webview = (WebView)view2.findViewById(R.id.shopFloorView);
currentURL = webview.getUrl();
TextView txview = (TextView) view.findViewById(R.id.URLCurrent);
txview.setText(currentURL);
}
@Override
public void onClick(DialogInterface dialog, int which) {
if (which == DialogInterface.BUTTON_POSITIVE) {
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(getContext());
SharedPreferences.Editor editor = settings.edit();
editor.putString("prefWMl", currentURL);
editor.commit();
Toast toast = Toast.makeText(getContext(), "URL changed to " + currentURL, Toast.LENGTH_SHORT);
toast.show();
}
}
我做错了什么导致 WebView 返回 null 吗?我绝对让页面完全加载,所以不是这样。
在此先感谢,-约翰