我正在开发一个对所有 webView 使用相同活动的应用程序,因为唯一需要更改的是它正在加载的 url。我有一个加载对话框弹出,否则它只是白页。问题是,除了我从主活动启动网页活动时,加载对话框适用于每个实例。这是主要活动的启动代码。不同的按钮会改变意图。
编辑:不起作用,我的意思是它加载了网页,但没有弹出对话框,它只是坐在白屏上,就好像我根本没有 shouldOverrideUrlLoading 一样。它甚至不打印我放在那里的调试。它肯定在使用我的新 webClient,因为它没有默认的任何功能。所以基本上, shouldOverrideUrlLoading 没有被调用(但 onPageFinished 是)
编辑 2:我忘了,logcat 也从标签 webViewGlue 输出 nativeDestroy View
Intent i = null;
// check which button was pressed, and then create the new intent
if (v == btnParticipants) {
i = new Intent(this, DetailedList.class);
i.putExtra("choice", Constants.SPONSOR_PAGE);
} else if (v == btnDirectionMap) {
i = new Intent(this, DirectionMapActivity.class);
} else if (v == btnEventMap) {
i = new Intent(this, EventMapActivity.class);
} else if (v == btnSchedule) {
i = new Intent(this, DetailedList.class);
i.putExtra("choice", Constants.ATTRACTION_PAGE);
} else if (v == btnSavedSchedule) {
i = new Intent(this, DetailedList.class);
i.putExtra("choice", Constants.MY_ATTRACTIONS);
} else if (v == btnRegistration) {
i = new Intent(this, Webpage.class);
i.putExtra("url", RetrievalEngine.getInstance().mainEvent.eventWebsite);
} else if (v == btnQR) {
} else if (v == btnFacebook) {
} else if (v == btnTwitter) {
i = new Intent(this, TwitterActivity.class);
} else if (v == btnWebsite) {
} else if (v == btnAbout) {
i = new Intent(this, AboutScreen.class);
}
// if a new intent was created, start it
if (i != null) {
startActivity(i);
}
该代码不起作用,但这个代码起作用,它来自一个关于页面,其中 v 是一个视图(在这种情况下是按钮):
if (v == btnWebsite){
Intent i = new Intent(this, Webpage.class);
i.putExtra("url", url);
startActivity(i);
}
两者都在做完全相同的事情,所以我不知道为什么它不起作用。
另外,这是网页活动:
WebView webView;
static ProgressDialog mProgressDialog;
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
this.finish();
return super.onKeyUp(keyCode, event);
}
public void onFinish(){
webView.destroy();
}
@SuppressLint("SetJavaScriptEnabled")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.web);
mProgressDialog = new ProgressDialog(this);
webView = (WebView) findViewById(R.id.webView);
Button backBtn = (Button) findViewById(R.id.backButton);
final TextView lbl = (TextView)findViewById(R.id.webPageDesc);
lbl.setText("Loading...");
backBtn.setText("Back");
backBtn.setOnClickListener(new OnClickListener(){
public void onClick(View viewArg) {
WebView view = (WebView) findViewById(R.id.webView);
if (view.canGoBack()) {
view.goBack();
}
}
});
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
lbl.setText("Loading...");
mProgressDialog.setTitle("Loading");
try{
mProgressDialog.show();
}catch(Exception e){}
mProgressDialog.setMessage("Loading " + url);
return false;
}
@Override
public void onPageFinished(WebView view, String url) {
mProgressDialog.dismiss();
if(view.getTitle().length() > 33){
lbl.setText(view.getTitle().substring(0, 30) + "...");
}else{
lbl.setText(view.getTitle());
}
view.setVisibility(View.VISIBLE);
super.onPageFinished(view, url);
}
});
Bundle extras = getIntent().getExtras();
if (extras != null) {
String url = extras.getString("url");
webView.loadUrl(url);
}
}