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<?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">
    <Button android:id="@+id/Button1"
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            android:layout_height="wrap_content"
            android:text="¥À¥¤¥¢¥é¡¼µ¯Æ°" />
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    <Button android:id="@+id/Button2"                              
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            android:layout_height="wrap_content"                   
            android:text="¥Ö¥é¥¦¥¶µ¯Æ°" />
<!-- -------------------------------------------------------------------------------- -->
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    <Button android:id="@+id/Button3"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="²èÌÌÁ«°Ü" />
</LinearLayout>

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public class MainActivity extends Activity {
	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		// ¥À¥¤¥¢¥é¡¼¥Ü¥¿¥ó¤ò²¡²¼¤·¤¿¤È¤­
		Button dialButton = (Button) findViewById(R.id.Button1);
		dialButton.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				Intent intent = new Intent(Intent.ACTION_DIAL);
				// ÅÅÏÃÈÖ¹æ¤òÀßÄê
				Uri uri = Uri.parse("tel:09012345678");
				intent.setData(uri);
				startActivity(intent);
			}
		});

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//--------------------------------------------------------------------------------
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//--------------------------------------------------------------------------------
		Button browzerButton = (Button) findViewById(R.id.Button2);
		browzerButton.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				Intent intent = new Intent(Intent.ACTION_VIEW);
				Uri uri = Uri.parse("http://ecnavi.jp/");
				intent.setData(uri);
				startActivity(intent);
			}
		});
//--------------------------------------------------------------------------------
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//--------------------------------------------------------------------------------
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	}
}
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public class SubActivity extends Activity {
//--------------------------------------------------------------------------------
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//--------------------------------------------------------------------------------
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.sub);
	}
//--------------------------------------------------------------------------------
//¢¬¤³¤³¤Þ¤Ç
//--------------------------------------------------------------------------------
}

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent">
<!-- -------------------------------------------------------------------------------- -->
<!-- ¢­¤³¤³¤«¤é -->
<!-- -------------------------------------------------------------------------------- -->
<TextView
    android:id="@+id/textView01"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="¥µ¥Ö¥¢¥¯¥Æ¥£¥Ó¥Æ¥£²èÌ̤ËÁ«°Ü¤·¤Þ¤·¤¿" />
<!-- -------------------------------------------------------------------------------- -->
<!-- ¢¬¤³¤³¤Þ¤Ç -->
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</LinearLayout>

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="jp.co.test"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8" />
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MainActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
<!-- -------------------------------------------------------------------------------- -->
<!-- ¢­¤³¤³¤«¤é -->
<!-- -------------------------------------------------------------------------------- -->
        <activity android:name=".Sub2Activity"
                  android:label="@string/sub_activity_name">
        </activity>
<!-- -------------------------------------------------------------------------------- -->
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<!-- -------------------------------------------------------------------------------- -->
    </application>
</manifest>

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public class MainActivity extends Activity {
	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
	         //////  Ãæά  ////////

		// ¥Ö¥é¥¦¥¶¡¼¥Ü¥¿¥ó¤ò²¡²¼¤·¤¿¤È¤­
		Button browzerButton = (Button) findViewById(R.id.Button2);
		browzerButton.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				Intent intent = new Intent(Intent.ACTION_VIEW);
				Uri uri = Uri.parse("http://ecnavi.jp/");
				intent.setData(uri);
				startActivity(intent);
			}
		});
//--------------------------------------------------------------------------------
//¢­¤³¤³¤«¤é
//--------------------------------------------------------------------------------
		// ²èÌÌÁ«°Ü¥Ü¥¿¥ó¤ò²¡²¼¤·¤¿¤È¤­
		Button activityButton = (Button) findViewById(R.id.Button3);
		activityButton.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				Intent intent = new Intent(MainActivity.this, SubActivity.class);
				startActivity(intent);
			}
		});
//--------------------------------------------------------------------------------
//¢¬¤³¤³¤Þ¤Ç
//-------------------------------------------------------------------------------
	}
}

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