单例模式（一）

偶然间写了一个单例

public class TextView extends View {
    private Context context;
    private static TextView textView;

    public TextView(Context context) {
        super(context);
        this.context = context;
    }

    public TextView getInstance() {
        if (textView == null) {
            synchronized (TextView.class) {
                if (textView == null) {
                    textView = new TextView(context);
                }
            }
        }
        return textView;
    }

}