(android)TextViewの文字をスクロールする。 Create an auto-Scrolling Marquee TextView in android http://androidsnips.blogspot.jp/2011/12/create-auto-scrolling-marquee-textview.html より focusしてなくてもスクロールできる。

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="@string/hello_world" />

    <sakura.example.myexamplemojiscroll4.ScrollingTextView
        android:id="@+id/actionbar_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ellipsize="marquee"
        android:lines="1"
        android:marqueeRepeatLimit="marquee_forever"
        android:paddingLeft="10dip"
        android:paddingRight="10dip"
        android:scrollHorizontally="true"
        android:text="autoscrollable textview without focus to textview...working...."
        android:textSize="16dip"
        android:textStyle="bold" />

</RelativeLayout>

MainActivity.java

package sakura.example.myexamplemojiscroll4;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

}

ScrollingTextView.java

package sakura.example.myexamplemojiscroll4;

import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.widget.TextView;

public class ScrollingTextView extends TextView {

    public ScrollingTextView(Context context, AttributeSet attrs,
            int defStyle) {
        super(context, attrs, defStyle);
    }

    public ScrollingTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public ScrollingTextView(Context context) {
        super(context);
    }

    @Override
    protected void onFocusChanged(boolean focused, int direction,
            Rect previouslyFocusedRect) {
        if (focused) {
            super.onFocusChanged(focused, direction, previouslyFocusedRect);
        }
    }

    @Override
    public void onWindowFocusChanged(boolean focused) {
        if (focused) {
            super.onWindowFocusChanged(focused);
        }
    }

    @Override
    public boolean isFocused() {
        return true;
    }
}