java.lang.RuntimeException

Unable to start activity ComponentInfo{com.example.rinzinchoephel.drivervolley/com.example.rinzinchoephel.drivervolley.Camera}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference

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  • Stack trace

    • java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.rinzinchoephel.drivervolley/com.example.rinzinchoephel.drivervolley.Camera}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2667)

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