Android WebView 进度条 [英] Android WebView progress bar

问题描述

我看过一个与此类似的问题 这里 但由于我是新手，有人可以解释如何让它在 WebView 中工作，或者至少如何设置 10 秒的延迟，以便人们知道它正在加载?

I have looked at a question similar to this here but as I am a newbie could someone explain how to get this to work in a WebView or at least how to set a 10 second time delay so people know that it's loading?

推荐答案

对于水平进度条，你首先需要定义你的进度条并将它与你的 XML 文件像这样链接，在 onCreate:

For a horizontal progress bar, you first need to define your progress bar and link it with your XML file like this, in the onCreate:

final TextView txtview = (TextView)findViewById(R.id.tV1);
final ProgressBar pbar = (ProgressBar) findViewById(R.id.pB1);

然后，您可以在 WebChromeClient 中使用 onProgressChanged 方法:

Then, you may use onProgressChanged Method in your WebChromeClient:

MyView.setWebChromeClient(new WebChromeClient() {
            public void onProgressChanged(WebView view, int progress) {
               if(progress < 100 && pbar.getVisibility() == ProgressBar.GONE){
                   pbar.setVisibility(ProgressBar.VISIBLE);
                   txtview.setVisibility(View.VISIBLE);
               }

               pbar.setProgress(progress);
               if(progress == 100) {
                   pbar.setVisibility(ProgressBar.GONE);
                   txtview.setVisibility(View.GONE);
               }
            }
        });

在那之后，在你的布局中你有这样的东西

After that, in your layout you have something like this

<TextView android:text="Loading, . . ." 
    android:textAppearance="?android:attr/textAppearanceSmall"
    android:id="@+id/tV1" android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:textColor="#000000"></TextView>

<ProgressBar android:id="@+id/pB1"
    style="?android:attr/progressBarStyleHorizontal" android:layout_width="fill_parent"
    android:layout_height="wrap_content" android:layout_centerVertical="true"
    android:padding="2dip">
</ProgressBar>

这就是我在我的应用中做到的.

This is how I did it in my app.

这篇关于Android WebView 进度条的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！