InflateException in sample on Android 2.3

[kboyarshinov]

It happens only on Android 2.3. 4+ is fine.
Stacktrace:

    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.qr_readerexample/com.example.qr_readerexample.DecoderActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class com.dlazaro66.qrcodereaderview.QRCodeReaderView
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
            at android.app.ActivityThread.access$1500(ActivityThread.java:117)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:130)
            at android.app.ActivityThread.main(ActivityThread.java:3683)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:507)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class com.dlazaro66.qrcodereaderview.QRCodeReaderView
            at android.view.LayoutInflater.createView(LayoutInflater.java:518)
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
            at android.app.Activity.setContentView(Activity.java:1657)
            at com.example.qr_readerexample.DecoderActivity.onCreate(DecoderActivity.java:25)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
            at android.app.ActivityThread.access$1500(ActivityThread.java:117)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:130)
            at android.app.ActivityThread.main(ActivityThread.java:3683)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:507)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.reflect.InvocationTargetException
            at java.lang.reflect.Constructor.constructNative(Native Method)
            at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
            at android.view.LayoutInflater.createView(LayoutInflater.java:505)
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
            at android.app.Activity.setContentView(Activity.java:1657)
            at com.example.qr_readerexample.DecoderActivity.onCreate(DecoderActivity.java:25)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
            at android.app.ActivityThread.access$1500(ActivityThread.java:117)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:130)
            at android.app.ActivityThread.main(ActivityThread.java:3683)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:507)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.NullPointerException
            at com.dlazaro66.qrcodereaderview.QRCodeReaderView.init(QRCodeReaderView.java:96)
            at com.dlazaro66.qrcodereaderview.QRCodeReaderView.<init>(QRCodeReaderView.java:75)
            at java.lang.reflect.Constructor.constructNative(Native Method)
            at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
            at android.view.LayoutInflater.createView(LayoutInflater.java:505)
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
            at android.app.Activity.setContentView(Activity.java:1657)
            at com.example.qr_readerexample.DecoderActivity.onCreate(DecoderActivity.java:25)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
            at android.app.ActivityThread.access$1500(ActivityThread.java:117)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:130)
            at android.app.ActivityThread.main(ActivityThread.java:3683)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:507)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
            at dalvik.system.NativeStart.main(Native Method)

[kboyarshinov]

I've figured out what it was. I tested on Genymotion with no camera, and NPE happened in init method trying to invoke cameraNotFound method on listener. I sent a PR to fix it.

[dlazaro66]

Hey! I really appreciate your contribution. I'm going to checkout your PR and merge it