Posts in 2021

• Android OkHttp change User-Agent header

  April 18, 2021 in Android

  Android OkHttp addHeader(“User-Agent”) does not work troubleshooting.

  Symptom Use OkHttpClient.Builder() to add User-Agent header. val okHttpClient = OkHttpClient.Builder() .addNetworkInterceptor { chain -> val requestBuilder = chain.request().newBuilder() .addHeader("User-Agent", userAgent) With this code, …

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• Various ways to load PDF in Android webview

  Last Update: December 08, 2021 in Android

  Android webview can not load PDF file by default. Luckily, there are various ways to how to load PDF file in Android webview, like use google service, pdf.js etc.

  Android webview can not load PDF file by default. :( Luckily, there are various ways to how to load PDF file in Android webview. Open Intent with startActivity If your requirement does not need use embedded webview to show PDF, you can just use …

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• Weird Android junit test failure java.lang.NoClassDefFoundError: android/content/Context

  April 15, 2021 in Android

  Symptom Have a Android project run junit test fine, suddenly it failed to run unit test with following error: xxxxTest initializationError java.lang.NoClassDefFoundError: android/content/Context at java.lang.Class.getDeclaredMethods0(Native Method) …

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