我正在尝试计算在我的 WebView 中下载的数据。以下是我的 WebViewClient
WebViewClient mWebViewClient = new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
Log.e(TAG, "init onPageFinished()");
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
Log.e(TAG, "init onPageStarted()");
}
};
还要计算我正在使用的数据:
mWebView.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
long currentBytes = TrafficStats.getUidRxBytes(Process.myUid());
long totalBytes = currentBytes - previousBytes;
Log.e(TAG, "Current Bytes ==> " + totalBytes
+ " New Progress ==> " + newProgress);
}
});
以下是日志:
05-06 13:11:11.621: E/TAG(16381): init onPageStarted()
05-06 13:11:11.621: E/TAG(16381): Current Bytes ==> 0 New Progress ==> 10
05-06 13:11:12.422: E/TAG(16381): Current Bytes ==> 2736 New Progress ==> 11
05-06 13:11:12.712: E/TAG(16381): Current Bytes ==> 5743 New Progress ==> 12
05-06 13:11:13.353: E/TAG(16381): Current Bytes ==> 28084 New Progress ==> 15
05-06 13:11:13.393: E/TAG(16381): Current Bytes ==> 42576 New Progress ==> 17
05-06 13:11:14.674: E/TAG(16381): Current Bytes ==> 414446 New Progress ==> 18
05-06 13:11:15.125: E/TAG(16381): Current Bytes ==> 527120 New Progress ==> 19
05-06 13:11:15.125: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 22
05-06 13:11:15.125: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 24
05-06 13:11:15.145: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 26
05-06 13:11:15.155: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 29
05-06 13:11:15.155: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 31
05-06 13:11:15.175: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 34
05-06 13:11:16.576: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 46
05-06 13:11:17.107: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 51
05-06 13:11:17.127: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 55
05-06 13:11:17.157: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 57
05-06 13:11:17.167: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 59
05-06 13:11:17.177: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 72
05-06 13:11:17.187: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 79
05-06 13:11:17.197: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 81
05-06 13:11:17.197: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 84
05-06 13:11:17.217: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 88
05-06 13:11:17.517: E/TAG(16381): init onPageFinished()
05-06 13:11:17.517: E/TAG(16381): Current Bytes ==> 629186 New Progress ==> 100
正如我们所看到的，数据字节在一段时间后变得恒定，我想知道在这段时间内发生了什么？onPageFinished() 最终被调用，所以肯定是这样time 不用于在 WebView 上渲染数据。请赐教我这一点。提前致谢。
最佳答案
可能会发生很多事情。例如，WebView 可能会从缓存获取资源，进度可能会反射(reflect)数据负载:URL 等。
onProgressChanged API 仅用于驱动进度条，因此您从中获得的值应被视为“最佳猜测”。
关于android - 使用webview客户端计算给定url的webview下载的数据？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/61473328/