More activities

Author: tacksoo

AndroidManifest.xml

@@ -27,9 +27,17 @@
             android:label="CheckBox Activity" >
         </activity>
         <activity
-            android:name=".CatActivity"
+            android:name="com.example.helloworld.CatActivity"
             android:label="Cat Activity" >
         </activity>
+        <activity
+            android:name="com.example.helloworld.PreferenceActivity"
+            android:label="Preference Activity" >
+        </activity>
+            <activity
+            android:name="com.example.helloworld.TextFileActivity"
+            android:label="TextFile Activity" >
+        </activity>
     </application>
 
 </manifest>

res/layout/activity_main.xml

@@ -12,19 +12,19 @@
                 android:id="@+id/button1"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="Button" />
+                android:text="Cat" />
 
             <Button
                 android:id="@+id/button2"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="Button" />
+                android:text="Pref" />
 
             <Button
                 android:id="@+id/button3"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:text="Button" />
+                android:text="Text" />
 
             <Button
                 android:id="@+id/button4"

src/com/example/helloworld/MainActivity.java

@@ -2,20 +2,30 @@
 
 import android.os.Bundle;
 import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
 import android.view.Menu;
 import android.view.View;
 import android.widget.Button;
 
 public class MainActivity extends Activity {
 
-	private Button catButton;
-	
+	private Button button1;
+	private Button button2;
+	private Button button3;
+	private Context context;
+
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 		setContentView(R.layout.activity_main);
-		catButton = (Button) findViewById(R.id.catButton);
-		catButton.setOnClickListener(new MyOnClickListener());
+		context = this;
+		button1 = (Button) findViewById(R.id.button1);
+		button1.setOnClickListener(new MyOnClickListener());
+		button2 = (Button) findViewById(R.id.button2);
+		button2.setOnClickListener(new MyOnClickListener());
+		button3 = (Button) findViewById(R.id.button3);
+		button3.setOnClickListener(new MyOnClickListener());
 	}
 
 	@Override
@@ -24,11 +34,18 @@ public boolean onCreateOptionsMenu(Menu menu) {
 		getMenuInflater().inflate(R.menu.activity_main, menu);
 		return true;
 	}
-	
+
 	public class MyOnClickListener implements View.OnClickListener {
 		@Override
 		public void onClick(View arg0) {
-			
+			if (arg0.getId() == R.id.button1) {
+				Intent intent = new Intent(context, CatActivity.class);
+				startActivity(intent);
+			} else if (arg0.getId() == R.id.button2) {
+				startActivity(new Intent(context, PreferenceActivity.class));
+			} else if (arg0.getId() == R.id.button3) {
+				startActivity(new Intent(context, TextFileActivity.class));
+			}
 		}
 	}