Android Development - Snippets: Unterschied zwischen den Versionen
Aus Wikizone
| Zeile 22: | Zeile 22: | ||
android:layout_height="match_parent" | android:layout_height="match_parent" | ||
android:orientation="vertical" > | android:orientation="vertical" > | ||
| + | |||
| + | <TextView | ||
| + | android:id="@+id/textView1" | ||
| + | android:layout_width="wrap_content" | ||
| + | android:layout_height="wrap_content" | ||
| + | android:text="@string/page2_title" | ||
| + | android:textAppearance="?android:attr/textAppearanceLarge" /> | ||
| + | |||
</LinearLayout> | </LinearLayout> | ||
</pre> | </pre> | ||
Version vom 28. Februar 2013, 15:15 Uhr
Neue Activity starten
Z.B. über Button Klick
Du brauchst:
- Neue Activity
- Evtl. neues Layout anlegen
- Neue Java Klasse für Activity anlegen
- Neue Activity im Manifest eintragen
- Button in der Haupt Activity
- onClick Event Handler
- Intent als Verbindung
- Ressourcen wie Strings etc.
Neues Layout für die Activity
Layout Ordner > Rechtsklick > New > Android Layout File > Name in Lowercase(z.b. page_2)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/page2_title"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
Neue Activity Klasse erzeugen
Package > Rechtsklick > New > Class > Name mit FirstLetterUppercase (z.B. Page2Activity)
- extends Activity
- Activity importieren
- mind. onCreate(bundle) -> am Besten über Rechtsklick > Source > Override
- setcontentView(R.layout.id)
page2Activity.class
package com.example.buttonstartsactivity;
import android.app.Activity;
import android.os.Bundle;
public class Page2Activity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.page2);
}
}
Button in Hauptansicht
z.B. main_activtiy.xml