attempt toget length of null array 尝试去找空数组的长度--欢迎指正 反馈 收藏
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attempt to get length of null array 试图得到零长度数组
Returns null if this abstract pathname does not denote a directory, or if an I/O error occurs. As you can see, that method can actually return null and not only an empty array, so you should check that the value isn't null before even trying to iterate over it. Share Improve this ...
(20672): > java.lang.RuntimeException: Unable to start activity > ComponentInfo{com.example.androidexplorer/com.example.androidexplorer.MainActivity}: > java.lang.NullPointerException: Attempt to get length of null array > 04-23 15:35:34.254: E/AndroidRuntime(20672): at > android.app....
if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) { if (usbDevice != null) { Log.i(TAG, "onReceive: 权限已获取"); EventBus.getDefault().post(new UsbStatusChangeEvent(true, usbDevice)); } else { ToastUtil.showToast("没有插入U盘"); ...
W/System.err: java.lang.NullPointerException: Attempt to get length of null array at com.scanlibrary.PickImageFragment.clearTempImages(PickImageFragment.java:67) at com.scanlibrary.PickImageFragment.createImageFile(PickImageFragment.java:133) at com.scanlibrary.PickImageFragment.openCamera(PickImage...
Reference to #462 I followed the above issue solution, still got the same error: the code: const granted = await PermissionsAndroid.request( PermissionsAndroid.PERMISSIONS.READ_EXTERNAL_STORAGE, ); if (granted === PermissionsAndroid.RESU...
Caused by: java.lang.NullPointerException: Attempt to get length of null array at okhttp3.internal.tls.CertificateAuthorityCouncil.<init>(CertificateAuthorityCouncil.java:44) at okhttp3.OkHttpClient.<init>(OkHttpClient.java:190) at okhttp3.OkHttpClient.<init>(OkHttpClient.java:60) at ok...