Android 7.0+上的WebView不会呈现页面 [英] WebView on Android 7.0+ doesn't render page
问题描述
我有带许可证的WebView屏幕。一切正常,直到用户通知我在Android 7+设备上没有任何显示为止。
I have WebView screen with license. And everything worked perfectly until users notified me that nothing shows on Android 7+ devices.
public class DefaultWebActivity extends AppCompatActivity {
WebView mWebView;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.default_web);
mWebView = (WebView) findViewById(R.id.web_view);
mWebView.setWebChromeClient(new WebChromeClient());
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setWebViewClient(new WebViewClient() {
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Log.w("WebActivity", "Error loading page " + description);
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
return true;
}
});
mWebView.loadUrl("https://google.com/");
}
@Override
protected void onPause() {
super.onPause();
mWebView.onPause();
}
@Override
protected void onResume() {
super.onResume();
mWebView.onResume();
}
}
我可以看到它加载了某些内容(google URL出现在shouldOverrideUrlLoading方法中),但是什么也没显示。 没有错误日志出现。
I can see that it loads something(google url appears in shouldOverrideUrlLoading method) but it shows nothing. No error logs appear.
此代码在< 7.0 android版本设备上完美运行。
我已经了解到Android 7+使用Chrome渲染屏幕,但是我没有发现必须添加的内容来解决问题。
This code perfectly works on <7.0 android version devices. I have read that Android 7+ uses Chrome to render screen but I didn't fount what I have to add to fix issue.
在此先感谢您!
推荐答案
来自Android文档
From Android doc
这是Android N之前的版本
This is pre Android N
@Deprecated
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
这是因为Android N
This is since Android N
- @return如果主机应用程序要退出当前WebView
- ,则为true处理网址本身,否则返回false。
@Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
return true;
}
此方法来自Android N,因此,只有此问题在Android N中。
返回false,您应该解决问题。
This method is from Android N , so for this reason you have this issue only in Android N. Returning false you should solve your problem.
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