How to start Activity in my adapter?

Question

How can I start activity in adapter? I use this method in my adapter:

post.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        context.startActivity(new Intent(context,asabani_cat.class));
    }
});

But this worked just for fragment of my app, when I called this code in Activity App suddenly crashed!

Another question that I have, is it the good way to start activity in adapter?

my logcat:

11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: FATAL EXCEPTION: main 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: java.lang.NullPointerException 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at com.katibehpayam.mahdi.katibehpayam.adapter_common$7.onClick(adapter_common.java:266) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at android.view.View.performClick(View.java:4377) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at android.view.View$PerformClick.run(View.java:18044) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:725) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:92) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at android.os.Looper.loop(Looper.java:137) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5306) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:511) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869) 11-27 21:25:25.086 22237-22237/com.katibehpayam.mahdi.katibehpayam E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)

Answer 1

You could try:

post.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        v.getContext().startActivity(new Intent(v.getContext(),asabani_cat.class));
    }
});