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[英]Ionic 2 - Android release build stuck on white screen after splash screen
[英]Why my android studio web view app goes blank white after splash screen in signed release and works perfect id debug?
一些它在舊設備上的工作原理,但我在 2 個新設備上嘗試了發布應用程序不起作用它在啟動屏幕后顯示一個白色的空白屏幕
並且沒有錯誤顯示請回答我
主要活動
private WebView mywebview;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mywebview = (WebView) findViewById(R.id.webview);
WebSettings webSettings = mywebview.getSettings();
mywebview.setWebViewClient(new WebViewClient());
mywebview.loadUrl("https://netixshop.com/");
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
}
public class myWebClient extends WebViewClient {
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
@Override
public void onBackPressed() {
if (mywebview.canGoBack()) {
mywebview.goBack();
}else{
super.onBackPressed();
}
}
}
這是我的清單,請檢查一下,找出導致錯誤的原因
android 清單
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<application
android:usesCleartextTraffic="true"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">
<activity android:name=".MainActivity"></activity>
<activity android:name=".splashactivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>```
可能您沒有將 Internet 權限添加到 Manifest 文件,而默認情況下它已添加到調試清單文件中。 所以你需要添加互聯網權限;
<uses-permission android:name="android.permission.INTERNET" />
如果您使用 android 8 或更高版本,您可能需要在application
標簽下添加此行以訪問非 https web url;
android:usesCleartextTraffic="true"
最后它看起來像這樣;
<?xml version="1.0" encoding="utf-8"?>
<manifest ...>
<uses-permission android:name="android.permission.INTERNET" />
<application
...
android:usesCleartextTraffic="true"
...>
...
</application>
</manifest>
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