下面列出了android.view.ViewConfiguration#getScaledTouchSlop ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* Apps should use ViewDragHelper.create() to get a new instance. This will
* allow VDH to use internal compatibility implementations for different
* platform versions.
*
* @param context Context to initialize config-dependent params from
* @param forParent Parent view to monitor
*/
private ViewDragHelper(Context context, ViewGroup forParent, Callback cb) {
if (forParent == null) {
throw new IllegalArgumentException("Parent view may not be null");
}
if (cb == null) {
throw new IllegalArgumentException("Callback may not be null");
}
mParentView = forParent;
mCallback = cb;
final ViewConfiguration vc = ViewConfiguration.get(context);
final float density = context.getResources().getDisplayMetrics().density;
mEdgeSize = (int) (EDGE_SIZE * density + 0.5f);
mTouchSlop = vc.getScaledTouchSlop();
mMaxVelocity = vc.getScaledMaximumFlingVelocity();
mMinVelocity = vc.getScaledMinimumFlingVelocity();
mScroller = ScrollerCompat.create(context, sInterpolator);
}
/**
* Apps should use ViewDragHelper.create() to get a new instance. This will
* allow VDH to use internal compatibility implementations for different
* platform versions.
*
* @param context Context to initialize config-dependent params from
* @param forParent Parent view to monitor
*/
private ViewDragHelper(Context context, ViewGroup forParent, Callback cb) {
if (forParent == null) {
throw new IllegalArgumentException("Parent view may not be null");
}
if (cb == null) {
throw new IllegalArgumentException("Callback may not be null");
}
mParentView = forParent;
mCallback = cb;
final ViewConfiguration vc = ViewConfiguration.get(context);
final float density = context.getResources().getDisplayMetrics().density;
mEdgeSize = (int) (EDGE_SIZE * density + 0.5f);
mTouchSlop = vc.getScaledTouchSlop();
mMaxVelocity = vc.getScaledMaximumFlingVelocity();
mMinVelocity = vc.getScaledMinimumFlingVelocity();
mScroller = ScrollerCompat.create(context, sInterpolator);
}
/**
* Apps should use ViewDragHelper.create() to get a new instance. This will
* allow VDH to use internal compatibility implementations for different
* platform versions.
*
* @param context Context to init config-dependent params from
* @param forParent Parent view to monitor
*/
private ViewDragHelper(Context context, ViewGroup forParent, Callback cb) {
if (forParent == null) {
throw new IllegalArgumentException("Parent view may not be null");
}
if (cb == null) {
throw new IllegalArgumentException("Callback may not be null");
}
mParentView = forParent;
mCallback = cb;
final ViewConfiguration vc = ViewConfiguration.get(context);
final float density = context.getResources().getDisplayMetrics().density;
mEdgeSize = (int) (EDGE_SIZE * density + 0.5f);
mTouchSlop = vc.getScaledTouchSlop();
mMaxVelocity = vc.getScaledMaximumFlingVelocity();
mMinVelocity = vc.getScaledMinimumFlingVelocity();
mScroller = ScrollerCompat.create(context, sInterpolator);
}
/**
* Apps should use ViewDragHelper.create() to get a new instance.
* This will allow VDH to use internal compatibility implementations for different
* platform versions.
*
* @param context Context to initialize config-dependent params from
* @param forParent Parent view to monitor
*/
private ViewDragHelper(Context context, ViewGroup forParent, Callback cb) {
if (forParent == null) {
throw new IllegalArgumentException("Parent view may not be null");
}
if (cb == null) {
throw new IllegalArgumentException("Callback may not be null");
}
mParentView = forParent;
mCallback = cb;
final ViewConfiguration vc = ViewConfiguration.get(context);
final float density = context.getResources().getDisplayMetrics().density;
mEdgeSize = (int) (EDGE_SIZE * density + 0.5f);
mTouchSlop = vc.getScaledTouchSlop();
mMaxVelocity = vc.getScaledMaximumFlingVelocity();
mMinVelocity = vc.getScaledMinimumFlingVelocity();
mScroller = ScrollerCompat.create(context, sInterpolator);
}
public ScrollableViewGroup(Context paramContext, AttributeSet paramAttributeSet)
{
super(paramContext, paramAttributeSet);
Context localContext = getContext();
setFocusable(false);
ViewConfiguration localViewConfiguration = ViewConfiguration.get(localContext);
this.mTouchSlop = localViewConfiguration.getScaledTouchSlop();
this.mMinimumVelocity = localViewConfiguration.getScaledMinimumFlingVelocity();
this.mMaximumVelocity = localViewConfiguration.getScaledMaximumFlingVelocity();
this.mScroller = new Scroller(localContext, sInterpolator);
}
private void initTwoDScrollView() {
mScroller = new Scroller(getContext());
setFocusable(true);
setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);
setWillNotDraw(false);
final ViewConfiguration configuration = ViewConfiguration.get(getContext());
mTouchSlop = configuration.getScaledTouchSlop();
mMinimumVelocity = configuration.getScaledMinimumFlingVelocity();
mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();
}
public void initView() {
if (hasHeader) {
mListHeaderView = new PullHeadView(mContext);
mListHeaderView.setStateListener(this);
setHeaderDividersEnabled(false);
setFooterDividersEnabled(false);
addHeaderView(mListHeaderView, null, false);
mState = STATE_NORMAL;
final ViewConfiguration configuration = ViewConfiguration
.get(mContext);
mTouchSlop = configuration.getScaledTouchSlop();
}
super.setOnScrollListener(this);
}
public ScaleDragDetector(Context context, OnScaleDragGestureListener scaleDragGestureListener) {
mScaleDetector = new ScaleGestureDetector(context, this);
mScaleDragGestureListener = scaleDragGestureListener;
final ViewConfiguration configuration = ViewConfiguration.get(context);
mMinimumVelocity = configuration.getScaledMinimumFlingVelocity();
mTouchSlop = configuration.getScaledTouchSlop();
}
private void init(Context context) {
mHelper = new ScrollableHelper();
mScroller = new Scroller(context);
final ViewConfiguration configuration = ViewConfiguration.get(context);
mTouchSlop = configuration.getScaledTouchSlop();
mMinimumVelocity = configuration.getScaledMinimumFlingVelocity();
mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();
}
void init() {
x1 = -1;
y1 = -1;
ViewConfiguration mViewConfiguration = ViewConfiguration.get(getContext());
minSlideDistance = mViewConfiguration.getScaledTouchSlop();
minHorizontalSlideDistance = minVerticalSlideDistance = minSlideDistance;
}
/**
* 初始化
*
* @param attrs 属性
*/
private void init(AttributeSet attrs) {
setGravity(Gravity.CENTER_VERTICAL);
paint = new Paint();
paint.setColor(Color.RED);
porterDuffXfermode = new PorterDuffXfermode(PorterDuff.Mode.SRC_IN);
switchScroller = new SwitchScroller(getContext(), new AccelerateDecelerateInterpolator());
buttonRectF = new RectF();
setDrawables();
ViewConfiguration config = ViewConfiguration.get(getContext());
touchSlop = config.getScaledTouchSlop();
setChecked(isChecked());
setClickable(true); // 设置允许点击，当用户点击在按钮其它区域的时候就会切换状态
}
public ScaleDragDetector(Context context, OnScaleDragGestureListener scaleDragGestureListener) {
mScaleDetector = new ScaleGestureDetector(context, this);
mScaleDragGestureListener = scaleDragGestureListener;
final ViewConfiguration configuration = ViewConfiguration.get(context);
mMinimumVelocity = configuration.getScaledMinimumFlingVelocity();
mTouchSlop = configuration.getScaledTouchSlop();
}
/**
* Construct a new Switch with a default style determined by the given theme attribute,
* overriding specific style attributes as requested.
*
* @param context The Context that will determine this widget's theming.
* @param attrs Specification of attributes that should deviate from the default styling.
* @param defStyle An attribute ID within the active theme containing a reference to the
* default style for this widget. e.g. android.R.attr.switchStyle.
*/
public Switch(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
Resources res = getResources();
mTextPaint.density = res.getDisplayMetrics().density;
// mTextPaint.setCompatibilityScaling(res.getCompatibilityInfo().applicationScale);
TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.Switch, defStyle, 0);
mThumbDrawable = a.getDrawable(R.styleable.Switch_thumb);
mTrackDrawable = a.getDrawable(R.styleable.Switch_track);
mTextOn = a.getText(R.styleable.Switch_textOn);
mTextOff = a.getText(R.styleable.Switch_textOff);
mThumbTextPadding = a.getDimensionPixelSize(
R.styleable.Switch_thumbTextPadding, 0);
mSwitchMinWidth = a.getDimensionPixelSize(
R.styleable.Switch_switchMinWidth, 0);
mSwitchPadding = a.getDimensionPixelSize(
R.styleable.Switch_switchPadding, 0);
int appearance = a.getResourceId(
R.styleable.Switch_switchTextAppearance, 0);
if (appearance != 0) {
setSwitchTextAppearance(context, appearance);
}
a.recycle();
ViewConfiguration config = ViewConfiguration.get(context);
mTouchSlop = config.getScaledTouchSlop();
mMinFlingVelocity = config.getScaledMinimumFlingVelocity();
// Refresh display with current params
refreshDrawableState();
setChecked(isChecked());
}
private void init() {
mSolidColor = 0;
mSelectionDivider = new Paint();
mSelectionDivider.setColor(Theme.getColor(Theme.key_dialogButton));
mSelectionDividerHeight = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, UNSCALED_DEFAULT_SELECTION_DIVIDER_HEIGHT, getResources().getDisplayMetrics());
mSelectionDividersDistance = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, UNSCALED_DEFAULT_SELECTION_DIVIDERS_DISTANCE, getResources().getDisplayMetrics());
mMinHeight = SIZE_UNSPECIFIED;
mMaxHeight = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 180, getResources().getDisplayMetrics());
if (mMinHeight != SIZE_UNSPECIFIED && mMaxHeight != SIZE_UNSPECIFIED && mMinHeight > mMaxHeight) {
throw new IllegalArgumentException("minHeight > maxHeight");
}
mMinWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 64, getResources().getDisplayMetrics());
mMaxWidth = SIZE_UNSPECIFIED;
if (mMinWidth != SIZE_UNSPECIFIED && mMaxWidth != SIZE_UNSPECIFIED && mMinWidth > mMaxWidth) {
throw new IllegalArgumentException("minWidth > maxWidth");
}
mComputeMaxWidth = (mMaxWidth == SIZE_UNSPECIFIED);
mPressedStateHelper = new PressedStateHelper();
setWillNotDraw(false);
mInputText = new TextView(getContext());
mInputText.setGravity(Gravity.CENTER);
mInputText.setSingleLine(true);
mInputText.setTextColor(Theme.getColor(Theme.key_dialogTextBlack));
mInputText.setBackgroundResource(0);
mInputText.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 18);
mInputText.setVisibility(INVISIBLE);
addView(mInputText, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
ViewConfiguration configuration = ViewConfiguration.get(getContext());
mTouchSlop = configuration.getScaledTouchSlop();
mMinimumFlingVelocity = configuration.getScaledMinimumFlingVelocity();
mMaximumFlingVelocity = configuration.getScaledMaximumFlingVelocity() / SELECTOR_MAX_FLING_VELOCITY_ADJUSTMENT;
mTextSize = (int) mInputText.getTextSize();
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setTextAlign(Align.CENTER);
paint.setTextSize(mTextSize);
paint.setTypeface(mInputText.getTypeface());
ColorStateList colors = mInputText.getTextColors();
int color = colors.getColorForState(ENABLED_STATE_SET, Color.WHITE);
paint.setColor(color);
mSelectorWheelPaint = paint;
mFlingScroller = new Scroller(getContext(), null, true);
mAdjustScroller = new Scroller(getContext(), new DecelerateInterpolator(2.5f));
updateInputTextView();
}
@Override
protected void init(Context context) {
viewpool = new ViewPool();
frames = new LinkedHashMap<Object, FreeFlowItem>();
ViewConfiguration configuration = ViewConfiguration.get(context);
maxFlingVelocity = configuration.getScaledMaximumFlingVelocity();
minFlingVelocity = configuration.getScaledMinimumFlingVelocity();
overflingDistance = configuration.getScaledOverflingDistance();
/*overscrollDistance = configuration.getScaledOverscrollDistance();*/
touchSlop = configuration.getScaledTouchSlop();
scroller = new OverScroller(context);
setEdgeEffectsEnabled(true);
}
public CupcakeGestureDetector(Context context) {
final ViewConfiguration configuration = ViewConfiguration
.get(context);
mMinimumVelocity = configuration.getScaledMinimumFlingVelocity();
mTouchSlop = configuration.getScaledTouchSlop();
}
public RadialPickerLayout(Context context, AttributeSet attrs) {
super(context, attrs);
setOnTouchListener(this);
ViewConfiguration vc = ViewConfiguration.get(context);
TOUCH_SLOP = vc.getScaledTouchSlop();
TAP_TIMEOUT = ViewConfiguration.getTapTimeout();
mDoingMove = false;
mCircleView = new CircleView(context);
addView(mCircleView);
mAmPmCirclesView = new AmPmCirclesView(context);
addView(mAmPmCirclesView);
mHourRadialTextsView = new RadialTextsView(context);
addView(mHourRadialTextsView);
mMinuteRadialTextsView = new RadialTextsView(context);
addView(mMinuteRadialTextsView);
mHourRadialSelectorView = new RadialSelectorView(context);
addView(mHourRadialSelectorView);
mMinuteRadialSelectorView = new RadialSelectorView(context);
addView(mMinuteRadialSelectorView);
// Prepare mapping to snap touchable degrees to selectable degrees.
preparePrefer30sMap();
mLastValueSelected = -1;
mInputEnabled = true;
mGrayBox = new View(context);
mGrayBox.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
mGrayBox.setBackgroundColor(getResources().getColor(R.color.transparent_black));
mGrayBox.setVisibility(View.INVISIBLE);
addView(mGrayBox);
mAccessibilityManager =
(AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
mTimeInitialized = false;
}
public CupcakeGestureDetector(Context context) {
final ViewConfiguration configuration = ViewConfiguration
.get(context);
mMinimumVelocity = configuration.getScaledMinimumFlingVelocity();
mTouchSlop = configuration.getScaledTouchSlop();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_flexiblespacewithimagewithviewpagertab2);
setSupportActionBar((Toolbar) findViewById(R.id.toolbar));
ViewCompat.setElevation(findViewById(R.id.header), getResources().getDimension(R.dimen.toolbar_elevation));
mPagerAdapter = new NavigationAdapter(getSupportFragmentManager());
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setAdapter(mPagerAdapter);
mImageView = findViewById(R.id.image);
mOverlayView = findViewById(R.id.overlay);
// Padding for ViewPager must be set outside the ViewPager itself
// because with padding, EdgeEffect of ViewPager become strange.
mFlexibleSpaceHeight = getResources().getDimensionPixelSize(R.dimen.flexible_space_image_height);
mTabHeight = getResources().getDimensionPixelSize(R.dimen.tab_height);
findViewById(R.id.pager_wrapper).setPadding(0, mFlexibleSpaceHeight, 0, 0);
mTitleView = (TextView) findViewById(R.id.title);
mTitleView.setText(getTitle());
setTitle(null);
SlidingTabLayout slidingTabLayout = (SlidingTabLayout) findViewById(R.id.sliding_tabs);
slidingTabLayout.setCustomTabView(R.layout.tab_indicator, android.R.id.text1);
slidingTabLayout.setSelectedIndicatorColors(getResources().getColor(R.color.accent));
slidingTabLayout.setDistributeEvenly(true);
slidingTabLayout.setViewPager(mPager);
((FrameLayout.LayoutParams) slidingTabLayout.getLayoutParams()).topMargin = mFlexibleSpaceHeight - mTabHeight;
ViewConfiguration vc = ViewConfiguration.get(this);
mSlop = vc.getScaledTouchSlop();
mMaximumVelocity = vc.getScaledMaximumFlingVelocity();
mInterceptionLayout = (TouchInterceptionFrameLayout) findViewById(R.id.container);
mInterceptionLayout.setScrollInterceptionListener(mInterceptionListener);
mScroller = new OverScroller(getApplicationContext());
ScrollUtils.addOnGlobalLayoutListener(mInterceptionLayout, new Runnable() {
@Override
public void run() {
// Extra space is required to move mInterceptionLayout when it's scrolled.
// It's better to adjust its height when it's laid out
// than to adjust the height when scroll events (onMoveMotionEvent) occur
// because it causes lagging.
// See #87: https://github.com/ksoichiro/Android-ObservableScrollView/issues/87
FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mInterceptionLayout.getLayoutParams();
lp.height = getScreenHeight() + mFlexibleSpaceHeight;
mInterceptionLayout.requestLayout();
updateFlexibleSpace();
}
});
}
/**
* Sets the sensitivity of the dragger.
*
* @param context The application context.
* @param sensitivity value between 0 and 1, the final value for touchSlop =
* ViewConfiguration.getScaledTouchSlop * (1 / s);
*/
public void setSensitivity(Context context, float sensitivity) {
float s = Math.max(0f, Math.min(1.0f, sensitivity));
ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
mTouchSlop = (int) (viewConfiguration.getScaledTouchSlop() * (1 / s));
}