Ich kann Fehler hier nicht herausfinden. Ich kann einige Sache sein oevrlooking ...findViewById gibt null auf einem LinearLayout in einem <include> d view
Layout-XML:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/listLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
android:orientation="vertical" >
<include
android:id="@+id/headerInclude"
android:layout_width="fill_parent"
android:layout_height="38dp"
android:layout_gravity="top"
layout="@layout/header" />
<LinearLayout
android:id="@+id/actualView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:layout_weight="1" >
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:divider="@drawable/dotted_line"
android:dividerHeight="2dp"
android:drawSelectorOnTop="false"
android:paddingBottom="10dp"
android:paddingTop="10dp" />
</LinearLayout>
<include
android:layout_width="fill_parent"
android:layout_height="35dp"
android:layout_gravity="bottom"
layout="@layout/footer" />
</LinearLayout>
inklusive Header XML:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/headerLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/header_bgr"
android:orientation="horizontal"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:paddingTop="7dp" >
<TextView
android:id="@+id/tvScreenTitle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.8"
android:ellipsize="end"
android:gravity="center|left"
android:singleLine="true"
android:text=""
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#ffffff"
android:textSize="17sp"
android:textStyle="bold" />
<TextView
android:id="@+id/tvScreenSubTitle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:gravity="center|right"
android:text=""
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#ffffff"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
Liste Aktivität Java-Code:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
appData = ((DxApp) this.getApplicationContext()).getData();
setContentView(R.layout.list);
setTitle("Some Title...");
// some more code...
addButtons();
}
protected void addButtons() {
LinearLayout headerLayout = (LinearLayout) findViewById(R.id.headerLayout);
Button btn = new Button(this);
btn.setText("Go to My Sets");
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
// do some thing here...
}
});
if (headerLayout != null)
headerLayout.addView(btn);
}
@Override
public void setTitle(CharSequence title) {
TextView tvTitle = (TextView) findViewById(R.id.tvScreenTitle);
tvTitle.setText(title);
}
Wenn ich entfernen die Überprüfen Sie if(headerLayout != null)
, ich bekomme null
Zeiger Ausnahme auf headerLayout.addView(btn)
.
Ich bin in der Lage TextView
in Funktion setTitle
zu bekommen, aber einige, wie nicht LinearLayout
Kann jemand mir helfen, herauszufinden, was mit dem Code ist falsch können ...
perfekt !! Vielen Dank, Luksprog :) – sadaf