SwipeView类似桌面的滑动界面

使用了android 2.0以上的ExifInterface来生成缩略图。可用来设计游戏的选关界面。

Java代码
import uk.co.jasonfry.android.tools.ui.PageControl.OnPageControlClickListener;
import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Display;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;

public class SwipeView extends HorizontalScrollView
{
    private static int DEFAULT_SWIPE_THRESHOLD = 60;

    private LinearLayout mLinearLayout;
    private Context mContext;
    private int SCREEN_WIDTH;
    private int mMotionStartX;
    private int mMotionStartY;
    private boolean mMostlyScrollingInX = false;
    private boolean mMostlyScrollingInY = false;
    private boolean mJustInterceptedAndIgnored = false;
    protected boolean mCallScrollToPageInOnLayout = false;
    private int mCurrentPage = 0;
    private int mPageWidth = 0;
    private OnPageChangedListener mOnPageChangedListener = null;
    private SwipeOnTouchListener mSwipeOnTouchListener;
    private View.OnTouchListener mOnTouchListener;
    private PageControl mPageControl = null;

    /**
     * {@inheritDoc}
     */
    public SwipeView(Context context)
    {
        super(context);
        mContext = context;
        initSwipeView();
    }

    /**
     * {@inheritDoc}
     */
    public SwipeView(Context context, AttributeSet attrs)
    {
        super(context, attrs);
        mContext = context;
        initSwipeView();
    }

    /**
     * {@inheritDoc}
     */
    public SwipeView(Context context, AttributeSet attrs, int defStyle)
    {
        super(context, attrs,defStyle);
        mContext = context;
        initSwipeView();
    }

    private void initSwipeView()
    {
        Log.i("uk.co.jasonfry.android.tools.ui.SwipeView","Initialising SwipeView");
        mLinearLayout = new LinearLayout(mContext);
        mLinearLayout.setOrientation(LinearLayout.HORIZONTAL);
        super.addView(mLinearLayout, -1, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));

        setSmoothScrollingEnabled(true);
        setHorizontalFadingEdgeEnabled(false);
        setHorizontalScrollBarEnabled(false);

        Display display = ((WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
        SCREEN_WIDTH = (int) (display.getWidth());
        mPageWidth = SCREEN_WIDTH;
        mCurrentPage = 0;

        mSwipeOnTouchListener = new SwipeOnTouchListener();
        super.setOnTouchListener(mSwipeOnTouchListener);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean onTrackballEvent(MotionEvent event)
    {
        return true;
    }

    @Override
    protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect)
    {
        //this will now pass trackball events down to onTrackballEvent
        return false;
    }

    @Override
    public void requestChildFocus(View child, View focused)
    {
        //this will now pass trackball events down to onRequestFocusInDescendants
        requestFocus();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void addView(View child)
    {
        this.addView(child,-1);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void addView (View child, int index)
    {
        ViewGroup.LayoutParams params;
        if(child.getLayoutParams()==null)
        {
            params = new LayoutParams(mPageWidth, LayoutParams.FILL_PARENT);
        }
        else

补充：移动开发 , Android ,