I used this constructor to create a database when a button was clicked this will be call the constructor when i run it show java.lang.ClasscastException
error whether my typecast in an onClickListener
is correct or not please anyone suggest
private static Context onClickListene;
public DatabaseHandler3(OnClickListener onClickListene)
{
super((Context) onClickListene,DATABASE_NAME, null, DATABASE_VERSION);
// TODO Auto-generated constructor stub
}
This is the calling program to a constructor
button2.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
try
{
final EditText edittxt4 = (EditText)findViewById(R.id.editText4);
final EditText edittxt5 = (EditText)findViewById(R.id.editText5);
final EditText edittxt6 = (EditText)findViewById(R.id.editText6);
String name=edittxt4.getText().toString();
String mailfamfri=edittxt5.getText().toString();
String phonefamfri=edittxt6.getText().toString();
int famatpos=mailfamfri.indexOf("@");
int famdotpos=mailfamfri.lastIndexOf(".");
int phonecount=phonefamfri.length();
if(name.equals(""))
{
Toast.makeText(FiveActivity.this, "You Family or Friends name is empty",Toast.LENGTH_LONG).show();
}
else if(mailfamfri.equals(""))
{
Toast.makeText(FiveActivity.this, "You Families or Friend's Mail-ID is Empty",Toast.LENGTH_LONG).show();
}
else if(famatpos<1 || famdotpos<famatpos+2 || famdotpos+2>=mailfamfri.length())
{
Toast.makeText(FiveActivity.this, "You Families or Friend's Email-ID is not valid",Toast.LENGTH_LONG).show();
}
else if(phonefamfri.equals(""))
{
Toast.makeText(FiveActivity.this, "Phone Number is empty",Toast.LENGTH_LONG).show();
}
else if(phonefamfri.contains("[a-zA-z]"))
{
Toast.makeText(FiveActivity.this, "Phone Number should not contain any letters ",Toast.LENGTH_LONG).show();
}
else if(phonecount>10 || phonecount<10)
{
Toast.makeText(FiveActivity.this, "Phone Number Should Contain only 10 Numbers",Toast.LENGTH_LONG).show();
}
else
{
String phoneno="+91"+phonefamfri;
// Toast.makeText(FiveActivity.this, "Good"+phoneno,Toast.LENGTH_LONG).show();
DatabaseHandler3 db = new DatabaseHandler3(this);
//Toast.makeText(FiveActivity.this,name+mailfamfri+phoneno,Toast.LENGTH_LONG).show();
Log.d("Insert: ", "Inserting ..");
Log.d("Insert: ", "Inserting ..");
OnClickListener
is not a subclass of Context
so if you try to cast it will give you an ClassCastException
.
You should use either a Context
or Activity
object.
If you are in an Activity
try using YourActivityName.this
it should be like this
public DatabaseHandler3(Context context) {
super(context,DATABASE_NAME, null, DATABASE_VERSION);
// TODO Auto-generated constructor stub
}
call like this
DatabaseHandler3 db=new DatabaseHandler3(YourActivity.this);
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