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                                            zhoufucheng

final TextFieldBoxes textFieldBoxes = findViewById(R.id.tfb_line) return null object

final TextFieldBoxes textFieldBoxes = findViewById(R.id.tfb_line); --------- beginning of crash E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.administrator.banner, PID: 8069 java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.administrator.banner/com.example.administrator.banner.TaskEditActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback...