A project for Afterclass 1 "Knowing ASEAN Better"
mrandika / asean-android Goto Github PK
View Code? Open in Web Editor NEWA project for Afterclass 1
License: MIT License
A project for Afterclass 1
License: MIT License
Perbaiki wanna cardview agar tidak kontras dengang background
Silakan di implementasi
Mengembalikan NULL Pointer, dan force close jika di implementasi
Sudah di implementasi, tetapi tidak muncul. Investigasi.
TIDAK ADA ERROR CODE
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.CardView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
XML
<android.support.v7.widget.CardView android:id="@+id/card_x" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="10dp" android:clickable="true" android:focusable="true" android:foreground="?attr/selectableItemBackground" app:cardElevation="5dp">
Java
card_x.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent i = new Intent(MainActivity.this, filipina.class); startActivity(i); } });
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