[英]Android Webview loading dialog not being dismissed
我使用以下代碼
class CustomWebViewClient extends WebViewClient {
Context context;
ProgressDialog pd = null;
public CustomWebViewClient (Context c){
context = c;
}
public void onPageFinished(WebView view, String url){
pd.dismiss();
}
public boolean shouldOverrideUrlLoading(final WebView view, final String url) {
pd = ProgressDialog.show(context, "", "pageload. Please wait...", true);
view.loadUrl(url);
return true;
}
}
當我單擊WebView中的鏈接時,會出現對話框並開始加載頁面,但是當頁面加載完畢后,對話框仍然在屏幕上。 顯然代碼很簡單,但我無法弄清楚這一點。 此外,我想我應該補充一點,被點擊的鏈接有一些重定向,但我不確定這是否與原因有關。
我怎么能這樣做?
Steven&Sander,嘗試在Handler中解除進度對話框
像這樣的東西:
class pdHandler extends Handler {
@Override
public void handleMessage(Message msg) {
if(pd != null)
{
pd.dismiss();
pd = null;
}
}
然后在onPageFinished中調用您的處理程序:
public void onPageFinshed(WebView view, String url){
pdHandler.sendEmptyMessage(0);
}
你完成了!
您錯過了@Override
注釋。
這是正確的代碼:
class CustomWebViewClient extends WebViewClient {
Context context;
ProgressDialog pd = null;
public CustomWebViewClient(Context c){
context = c;
}
@Override
public void onPageFinished(WebView view, String url){
if (pd != null && pd.isShowing())
{
pd.dismiss();
}
}
@Override
public boolean shouldOverrideUrlLoading(final WebView view, final String url) {
pd = ProgressDialog.show(context, "", "pageload. Please wait...", true);
view.loadUrl(url);
return true;
}
}
此代碼有效,但在初始加載時不會出現進度對話框。 如果需要,請將此代碼添加到類的構造函數中:
pd = ProgressDialog.show(context, "", "pageload. Please wait...", true);
public class WebDialog extends Dialog
{
static final int BLUE = 0xFF6D84B4;
static final float[] DIMENSIONS_DIFF_LANDSCAPE =
{ 20, 60 };
static final float[] DIMENSIONS_DIFF_PORTRAIT =
{ 40, 60 };
static final FrameLayout.LayoutParams FILL = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
static final int MARGIN = 4;
static final int PADDING = 2;
static final String DISPLAY_STRING = "touch";
private String mUrl;
// private DialogListener mListener;
private ProgressDialog mSpinner;
private WebView mWebView;
private LinearLayout mContent;
private TextView mTitle;
public WebDialog(Context context, String url)
{
super(context);
mUrl = url;
}
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
mSpinner = new ProgressDialog(getContext());
mSpinner.requestWindowFeature(Window.FEATURE_NO_TITLE);
mSpinner.setMessage("Loading...");
mContent = new LinearLayout(getContext());
mContent.setOrientation(LinearLayout.VERTICAL);
setUpTitle();
setUpWebView();
Display display = getWindow().getWindowManager().getDefaultDisplay();
final float scale = getContext().getResources().getDisplayMetrics().density;
int orientation = getContext().getResources().getConfiguration().orientation;
float[] dimensions = (orientation == Configuration.ORIENTATION_LANDSCAPE) ? DIMENSIONS_DIFF_LANDSCAPE : DIMENSIONS_DIFF_PORTRAIT;
addContentView(mContent, new LinearLayout.LayoutParams(display.getWidth() - ((int) (dimensions[0] * scale + 0.5f)), display.getHeight() - ((int) (dimensions[1] * scale + 0.5f))));
}
private void setUpTitle()
{
requestWindowFeature(Window.FEATURE_NO_TITLE);
Drawable icon = getContext().getResources().getDrawable(R.drawable.ic_launcher);
mTitle = new TextView(getContext());
mTitle.setText("Website");
mTitle.setTextColor(Color.WHITE);
mTitle.setTypeface(Typeface.DEFAULT_BOLD);
mTitle.setBackgroundColor(BLUE);
mTitle.setPadding(MARGIN + PADDING, MARGIN, MARGIN, MARGIN);
// mTitle.setCompoundDrawablePadding(MARGIN + PADDING);
// mTitle.setCompoundDrawablesWithIntrinsicBounds(icon, null, null, null);
mContent.addView(mTitle);
}
private void setUpWebView()
{
mWebView = new WebView(getContext());
mWebView.setVerticalScrollBarEnabled(false);
mWebView.setHorizontalScrollBarEnabled(false);
mWebView.setWebViewClient(new WebDialog.DialogWebViewClient());
mWebView.getSettings().setJavaScriptEnabled(true);
System.out.println(" mURL = "+mUrl);
mWebView.loadUrl(mUrl);
mWebView.setLayoutParams(FILL);
mContent.addView(mWebView);
}
private class DialogWebViewClient extends WebViewClient
{
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
view.loadUrl(url);
return true;
}
@Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl)
{
super.onReceivedError(view, errorCode, description, failingUrl);
WebDialog.this.dismiss();
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon)
{
super.onPageStarted(view, url, favicon);
mSpinner.show();
}
@Override
public void onPageFinished(WebView view, String url)
{
super.onPageFinished(view, url);
String title = mWebView.getTitle();
if (title != null && title.length() > 0)
{
mTitle.setText(title);
}
mSpinner.dismiss();
}
}
}
這確實有效,你拼寫錯了,你寫了“onPageFinshed”
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