Hi,
Keep getting
"Unable to start
activity...ComponentInfo{...}java.lang.NullPointerException"
error.
Tried couple of basic examples from web, same problem:
Actual Code:
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
setContentView(R.layout.enter_device_name);
final Button button = (Button) findViewById(R.id.okButt);
//
***********************************************************************************
// If I remove the bottom statement, I can see the UI display; a
textedit and a abutton.
// The line below causes the crash.
//
***********************************************************************************
button.setOnClickListener(
new Button.OnClickListener()
{
public void onClick(View v)
{
}
}
);
}
XML:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/
android" android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FFFEE9" android:padding="10px">
<TextView id="@+id/nameLab"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Type your name"/>
<EditText id="@+id/yourName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/nameLab"/>
<Button id="@+id/okButt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginLeft="10px"
android:text="OK"
android:layout_below="@id/yourName"/>
</RelativeLayout>
SDK: m5. Emulator using HVGA-P.
Also tried to use a dialog box. Also crashes when I call
setOnClickListener.
BTW, the 'okButt' button always display on top of the 'yourName' edit
box, isn't it suppose to be
'layout_below'? Other XML that I copied from some example exibit the
same behavior. Any clue?
Cheers...
Jason Tai
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