Ich bin neu zu android und ich bekomme null Zeigerausnahme, wenn onclicklistener eines Knopfes innerhalb des Dialogs aufrufend. was soll ich machen.Wie man onclicklistener Knopf setzt, der in einem kundenspezifischen Dialog ist
btn_add.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Dialog d=new Dialog(MainActivity.this);
d.setContentView(R.layout.activity_main);
d.setTitle("Add content");
d.show();
btnsubmit = (Button) findViewById(R.id.btn_submit);
btnsubmit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String name = etName.getText().toString();
String phoneNo = etPhone.getText().toString();
String query = "INSERT INTO PHONE_CONTACTS(name,phone) values ('"
+ name + "','" + phoneNo + "')";
sqlHandler.executeQuery(query);
showList();
etName.setText("");
etPhone.setText("");
}
});
}
});
Ich werde Ihre Hilfe wirklich zu schätzen wissen. dies ist, wie mein Dialog xml wie folgt aussieht: -
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MainActivity">
<TableLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TableRow
android:id="@+id/tableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/name" />
<EditText
android:id="@+id/et_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10" >
</EditText>
</TableRow>
<TableRow
android:id="@+id/tableRow2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/phone" />
<EditText
android:id="@+id/et_phone"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10" >
</EditText>
</TableRow>
<Button
android:id="@+id/btn_submit"
android:layout_width="80dp"
android:layout_height="40dp"
android:text="@string/submit"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"/>
</TableLayout>
</RelativeLayout>
den Stack-Trace Post Ich denke Nullpointer für Taste Initialisierung zu bestätigen. – Raghunandan