我有WebView,我希望在WebView中加载页面,在ActionBar中显示进度。该应用程序正在使用AppCompat Android库和应用程序的目标,并且编译SDK版本为21.只是WebView正常运行。
我认为方法setSupportProgress(int progress)
中存在问题。
我的代码如下。
的活动:
public class AuthActivity extends ActionBarActivity {
private boolean isConfirmationRequired = false;
private Utils utils = new Utils();
@SuppressLint("SetJavaScriptEnabled")
@Override
protected void onCreate(Bundle savedInstanceState) {
supportRequestWindowFeature(Window.FEATURE_PROGRESS);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_auth);
final String authUrl = "some url";
final WebView authWebView = (WebView) findViewById(R.id.auth_web_view);
authWebView.getSettings().setJavaScriptEnabled(true);
authWebView.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int newProgress) {
setTitle(R.string.loading);
setSupportProgress(newProgress * 100);
if (newProgress == 100)
setTitle(R.string.sign_in);
}
});
authWebView.setWebViewClient(new WebViewClient() {
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
if (!url.equals(authUrl))
isConfirmationRequired = true;
}
@Override
public boolean shouldOverrideUrlLoading(WebView webView, String url) {
boolean hasUserBrokenAuth = url.equals("some url") ||
url.equals("some url");
boolean isUserAuthorized = url.startsWith("some url" +
"access_token=");
if (hasUserBrokenAuth) {
if (isConfirmationRequired)
utils.showConfirmDialog(AuthActivity.this);
else
finish();
} else {
utils.webViewLoadUrlIfInternetIsConnected(AuthActivity.this, authWebView, url);
if (isUserAuthorized)
saveAuthData(url);
}
return true;
}
});
utils.webViewLoadUrlIfInternetIsConnected(this, authWebView, authUrl);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (isConfirmationRequired) {
utils.showConfirmDialog(this);
}
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
if (isConfirmationRequired) {
utils.showConfirmDialog(this);
return true;
} else {
return super.onOptionsItemSelected(item);
}
}
private void saveAuthData(String url) {
String accessToken = utils.extractPattern(url, "access_token=(.*?)&");
String userId = utils.extractPattern(url, "user_id=(\\d*)");
}
utils.webViewLoadUrlIfInternetIsConnected:
public void webViewLoadUrlIfInternetIsConnected(final Context context, final WebView webView,
final String url) {
if (isInternetConnected(context)) {
webView.loadUrl(url);
} else {
showSnackbarInternetDisconnected(context, new ActionClickListener() {
@Override
public void onActionClicked(Snackbar snackbar) {
snackbar.dismiss();
webViewLoadUrlIfInternetIsConnected(context, webView, url);
}
});
}
}
答案 0 :(得分:3)
AppCompat不支持尽可能显示进度视图,因此您可以从代码中删除以下内容:
supportRequestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setSupportProgressBarIndeterminateVisibility(...);
有可能使用新工具栏,我今天自己尝试了,但它使所有人复杂化。我结束的解决方案是设置一个更多的菜单项,引用一个引用一个drawbale的布局:
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto" >
<item
android:id="@+id/menu_progress"
android:visible="false"
app:showAsAction="always"
app:actionLayout="@layout/progress_indeterminate"
tools:ignore="AlwaysShowAction,UnusedAttribute"/>
然后布局如下:
<?xml version="1.0" encoding="utf-8"?>
<ProgressBar xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/toolbar_progress_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:indeterminateDrawable="@drawable/custom_progress_wheel" />
可绘制如下(您可以根据需要自定义):
<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="0"
android:pivotX="50%"
android:pivotY="50%"
android:toDegrees="720" >
<shape
android:innerRadiusRatio="3"
android:shape="ring"
android:thicknessRatio="12"
android:useLevel="false" >
<gradient
android:centerColor="#FFFFFF"
android:centerY="0.50"
android:endColor="#FFFFFF"
android:startColor="#000000"
android:type="sweep"
android:useLevel="false" />
</shape>
</rotate>
然后在onCreateOptionsMenu中使用以下命令初始化menuItem:
mProgressMenu = menu.findItem(R.id.menu_progress);
并且使用setVisibility,您可以在活动的任何位置查看菜单的可见性。
答案 1 :(得分:0)
您应尝试使用setSupportProgressBarVisibility(boolean)更新Visibility
ProgressBar
,如下所示:
// set Visibility to TRUE
setSupportProgressBarVisibility(true);
然后,在onProgressChanged
中,当进度结束时禁用其Visibility
:
@Override
public void onProgressChanged(WebView view, int newProgress) {
setTitle(R.string.loading);
setSupportProgress(newProgress * 100);
if (newProgress == 100) {
// set it to FALSE
setSupportProgressBarVisibility(false);
setTitle(R.string.sign_in);
}
//...
}
更新:
另一种解决方案可能是使用添加到Progress View
的自定义AppCompat
。
您必须充气包含水平ProgressBar的自定义视图,获取 ActionBar 容器 ViewGroup和添加自定义视图到容器:
/** Inflate a custom view **/
View ab_progressView = getLayoutInflater().inflate(R.layout.ab_progressbar, null)
/** Get the ActionBar container **/
ViewGroup ab_container = (ViewGroup) findViewById(R.id.action_bar_container);
/** Add the custom view **/
ab_container.addView(ab_progressView);
如果
ab_container
返回NullPointerException
,您只需创建一个新的Runnable
即可在并行线程中获取其ID。
您必须在ActionBar底部设置此新视图:
/** Create layout parameters **/
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
/** Set the gravity **/
params.gravity = Gravity.BOTTOM;
/** Set these params to your view **/
ab_progressView.setLayoutParams(params);
然后更新进度:
/** Get the progress bar **/
final ProgressBar progressBar = (ProgressBar) ab_progressView.findViewById(R.id.progress);
@Override
public void onProgressChanged(WebView view, int newProgress) {
/** Update the progress **/
progressBar.setProgress(newProgress * 100);
}
当进度结束时,只需删除自定义视图:
/** Remove the custom view added **/
ab_container.removeView(ab_progressView);
我没有测试过这个解决方案,但它应该有效..