webchromeclient = new SelfWebChromeClient( progressBar); webView.setWebChromeClient(webchromeclient);SelfWebChromeClient继承自WebChromeClient :
class SelfWebChromeClient extends WebChromeClient {}
@Override
public void onReceivedTitle(WebView view, String title) {
titleText.setText(title);
}此方法返回了页面的title，你可以在此方法体内展示此title信息。需要继承并实现WebChromeClient的onProgressChanged方法
@Override
public void onProgressChanged(WebView view, int newProgress) {
// 当WebView进度改变时更新窗口进
if (progressbar.getVisibility() != View.VISIBLE&&newProgress != 100) {
progressbar.setVisibility(View.VISIBLE);
}
progressbar.setProgress(newProgress);
super.onProgressChanged(view, newProgress);
}
此方法返回了页面加载的进度newProgress。
alert("大家好");这时候需要如何来处理呢？WebChromeClient提供了回调方法onJsAlert,继承并实现此方法，在此方法体中做你想做的事，例如： @Override
public boolean onJsAlert(WebView view, String url, String message,
final JsResult result) {
// 构建一个Builder来显示网页中的alert对话框
Builder builder = new Builder(TestWebActivity.this);
builder.setTitle("alert对话框");
builder.setMessage(message);
builder.setPositiveButton(android.R.string.ok,
new AlertDialog.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
result.confirm();
}
});
builder.setCancelable(false);
builder.create();
builder.show();
return true;
}
还有诸如onJsConfirm之类的方法同理。
private View customView;
class SelfWebChromeClient extends WebChromeClient {
private Bitmap defaltvideo;
private ProgressBar progressbar;
private CustomViewCallback myCallback = null;
public SelfWebChromeClient( ProgressBar progressbar) {
super();
this.progressbar = progressbar;
}
@Override
public void onShowCustomView(View view, CustomViewCallback callback) {
if (myCallback != null) {
myCallback.onCustomViewHidden();
myCallback = null;
return;
}
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
ViewGroup parent = (ViewGroup) webView.getParent();
parent.removeView(webView);
parent.addView(view);
webviewFrame.addView(webView);
customView = view;
myCallback = callback;
}
public void onHideCustomView() {
if (customView != null) {
if (myCallback != null) {
myCallback.onCustomViewHidden();
myCallback = null;
}
try {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
ViewParent pat = customView.getParent();
ViewGroup parent = (ViewGroup) pat;
parent.removeView(customView);
webviewFrame.removeAllViews();
parent.addView(webView);
customView = null;
} catch (Exception e) {
e.printStackTrace();
}
}
}
// 视频加载添加默认图标
@Override
public Bitmap getDefaultVideoPoster() {
System.out.println("getDefaultVideoPoster-->>");
if (defaltvideo == null) {
defaltvideo = BitmapFactory.decodeResource(getResources(),
R.drawable.ic_launcher);
}
return defaltvideo;
}
// 视频加载时进程loading
@Override
public View getVideoLoadingProgressView() {
System.out.println("getVideoLoadingProgressView-->>");
ProgressBar progressbar = new ProgressBar(TestWebActivity.this, null,
android.R.attr.progressBarStyleHorizontal);
progressbar.setLayoutParams(new AbsoluteLayout.LayoutParams(
LayoutParams.FILL_PARENT, 3, 0, 0));
return progressbar;
}
} @Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (customView != null) {
webchromeclient.onHideCustomView();
return true;
} else {
if (webView.canGoBack()) {
webView.goBack();
return true;
} else {
finish();
}
}
}
return false;
}@Override
protected void onResume() {
// LogActs.i("onResume-->>");
try {
webView.getClass().getMethod("onResume")
.invoke(webView, (Object[]) null);
} catch (Exception e) {
e.printStackTrace();
}
super.onResume();
}
@Override
protected void onStop() {
try {
webView.getClass().getMethod("onPause")
.invoke(webView, (Object[]) null);
} catch (Exception e) {
e.printStackTrace();
}
// webView.loadUrl("about:blank");
super.onStop();
}
android WebView（五）WebChromeClient
原文地址：http://blog.csdn.net/w2865673691/article/details/44982985
