Este exemplo complementa o Intent-Filter - conceito básico.
Java
package com.tela2;
import android.app.Activity;
import android.os.Bundle;
public class Tela2Activity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
</LinearLayout>
Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.tela2"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="7" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".Tela2Activity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="ACAO_TESTE" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="CATEGORIA_TESTE" />
</intent-filter>
</activity>
</application>
</manifest>
Modifique o Projeto 2 - Teste:
public void onClick(View arg0) {
Intent it;
it = new Intent("ACAO_TESTE");
it.addCategory("CATEGORIA_TESTE");
it.putExtra("mensagem", "uma mensagem a ser enviada");
startActivity(it);
}
Desta forma, ao pressionar o botão, só a Tela2 aparece.
Mas se você rodar sem esta linha (amarelo), o Android perguntará qual Activity deverá responder a "ACAO_TESTE":
