Always appear NullPointerException!

[merhong2012]

No matter yesterday，but today ,when I call the mothed of .show occurs NullPointerException. code: public void showDialog(Context context, String text) { Dialog dialog = new Dialog(context, "Tip", text); dialog.setCancelable(false); dialog.setCanceledOnTouchOutside(false); dialog.setOnAcceptButtonClickListener(new View.OnClickListener() { @Override public void onClick(View v) { } }); dialog.show(); }

the error:

E/AndroidRuntime﹕ FATAL EXCEPTION: main java.lang.NullPointerException at com.gc.materialdesign.widgets.Dialog.onCreate(Dialog.java:62) at android.app.Dialog.dispatchOnCreate(Dialog.java:355) at android.app.Dialog.show(Dialog.java:260) at com.gc.materialdesign.widgets.Dialog.show(Dialog.java:111) at cn.cyapp.navyblue.base.BaseActivity.showDialog(BaseActivity.java:312) at cn.cyapp.navyblue.ui.LoginActivity.onClick(LoginActivity.java:82) at android.view.View.performClick(View.java:4204) at android.view.View$PerformClick.run(View.java:17355) at android.os.Handler.handleCallback(Handler.java:725) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5041) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) at dalvik.system.NativeStart.main(Native Method)

[djokobozinov]

Don't place dialog.show inside the event listener Here example to try Dialog dialog = new Dialog(mContext, "title","message"); dialog.show(); ButtonFlat acceptButton = dialog.getButtonAccept(); acceptButton.setText("ACCEPT");

[GreaseMonk]

He didn't put it inside the event listener I have the same issue with just the following code that is placed in onStart() of a fragment.

Dialog dialog = new Dialog(v.getContext(), "Title", "Msg"); dialog.show();