天天记录 - 使用VelocityTracker计算滑动速率

最新推荐文章于 2024-11-10 19:52:26 发布

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最新推荐文章于 2024-11-10 19:52:26 发布 · 3.2k 阅读

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先看看效果图

使用比较简单，直接贴代码

/**
 * 计算滑动速率
 * 
 */
public class VelocityTrackerDemoActivity extends Activity {

	private static final String INFO = "手指在屏幕上滑动";
	
    private int mMaximumVelocity;
	private VelocityTracker mVelocityTracker;
	private TextView mTextView;
	
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        mTextView = (TextView) findViewById(R.id.textView);
        mTextView.setText(INFO);
        
        final ViewConfiguration configuration = ViewConfiguration.get(this);
        mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();

    }
	
	
	@Override
	public boolean onTouchEvent(MotionEvent event) {

		int action = event.getAction();
		
		if