android.support.v4.view.NestedScrollingParentHelper Java Examples

public ELinkageScrollLayout(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    mParentHelper = new NestedScrollingParentHelper(this);
    mScroller = new Scroller(getContext());
    mLocScroller = new Scroller(getContext());
    mVelocityScroller = new Scroller(getContext());
    mPosIndicator = new PosIndicator(false);
    ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
    mMaximumVelocity = viewConfiguration.getScaledMaximumFlingVelocity();
    mMinimumVelocity = viewConfiguration.getScaledMinimumFlingVelocity();
    mPosIndicator.setTouchSlop(viewConfiguration.getScaledTouchSlop());

    // 确保联动容器调用onDraw()方法
    setWillNotDraw(false);
    // enable vertical scrollbar
    setVerticalScrollBarEnabled(true);
}
 

private void initAttrs(Context context, AttributeSet attrs) {

    if (getChildCount() > 1) {
      throw new RuntimeException("WXSwipeLayout should not have more than one child");
    }

    parentHelper = new NestedScrollingParentHelper(this);

    if (isInEditMode() && attrs == null) {
      return;
    }

    mRefreshViewBgColor = Color.TRANSPARENT;
    mProgressBgColor = Color.TRANSPARENT;
    mProgressColor = Color.RED;
  }
 

/**
 * @param context
 * @param attrs
 * @param defStyleAttr
 */
private void init(Context context, AttributeSet attrs, int defStyleAttr) {
    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);

    mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    setNestedScrollingEnabled(true);
    mScroller = new Scroller(context, new DecelerateInterpolator());
    TypedArray a = context.obtainStyledAttributes(attrs,
            R.styleable.AbsRefreshLayout, defStyleAttr, 0);
    final int N = a.getIndexCount();
    int resFooter = R.layout.layout_loadmore;
    for (int i = 0; i < N; i++) {
        int attr = a.getIndex(i);
        if (attr == R.styleable.AbsRefreshLayout_footerNestLayout) {
            resFooter = a.getResourceId(attr, resFooter);
            break;
        }
    }
    a.recycle();
    /**
     * Convert values in dp to values in px;
     */
    setFooterView(inflate(context, resFooter, null));
}
 

public NestedScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    this.mTempRect = new Rect();
    this.mIsLayoutDirty = true;
    this.mIsLaidOut = false;
    this.mChildToScrollTo = null;
    this.mIsBeingDragged = false;
    this.mSmoothScrollingEnabled = true;
    this.mActivePointerId = -1;
    this.mScrollOffset = new int[2];
    this.mScrollConsumed = new int[2];
    initScrollView();
    TypedArray a = context.obtainStyledAttributes(attrs, SCROLLVIEW_STYLEABLE, defStyleAttr, 0);
    setFillViewport(a.getBoolean(0, false));
    a.recycle();
    this.mParentHelper = new NestedScrollingParentHelper(this);
    this.mChildHelper = new NestedScrollingChildHelper(this);
    setNestedScrollingEnabled(true);
    ViewCompat.setAccessibilityDelegate(this, ACCESSIBILITY_DELEGATE);
}
 

/**
 */
@SuppressWarnings("deprecation")
public AbsRefreshLayout(View listView) {
    this(listView.getContext());
    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);

    mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    setNestedScrollingEnabled(true);
    mTargetView = listView;
    ViewGroup group = (ViewGroup) mTargetView.getParent();
    if (group != null) {
        LayoutParams params = mTargetView.getLayoutParams();
        int index = group.indexOfChild(listView);
        group.removeView(listView);
        group.addView(this, index, params);
    }
    mTargetView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
            LayoutParams.MATCH_PARENT));
    super.addView(mTargetView);
}
 

private void initAttrs(Context context, AttributeSet attrs) {

    if (getChildCount() > 1) {
      throw new RuntimeException("WXSwipeLayout should not have more than one child");
    }

    parentHelper = new NestedScrollingParentHelper(this);

    if (isInEditMode() && attrs == null) {
      return;
    }

    mRefreshViewBgColor = Color.TRANSPARENT;
    mProgressBgColor = Color.TRANSPARENT;
    mProgressColor = Color.RED;
  }
 

private void initAttrs(Context context, AttributeSet attrs) {

    if (getChildCount() > 1) {
      throw new RuntimeException("WXSwipeLayout should not have more than one child");
    }

    parentHelper = new NestedScrollingParentHelper(this);

    loadingViewHeight = dipToPx(context, REFRESH_VIEW_HEIGHT);
    refreshViewFlowHeight = loadingViewHeight * (float)1.5;

    if (isInEditMode() && attrs == null) {
      return;
    }

    mRefreshViewBgColor = Color.TRANSPARENT;
    mProgressBgColor = Color.TRANSPARENT;
    mProgressColor = Color.RED;
  }
 

public PullHeaderLayout(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    int headerHeight = DEFAULT_HEIGHT;
    int headerExpandHeight = DEFAULT_EXPAND;
    int headerShrinkHeight = DEFAULT_SHRINK;

    if (attrs != null) {
        TypedArray arr = context.obtainStyledAttributes(attrs, R.styleable.PullHeaderLayout);
        headerHeight = arr.getDimensionPixelOffset(R.styleable.PullHeaderLayout_phl_header_height,
                DEFAULT_HEIGHT);
        headerExpandHeight = arr.getDimensionPixelOffset(R.styleable.PullHeaderLayout_phl_header_expand_height,
                DEFAULT_EXPAND);
        headerShrinkHeight = arr.getDimensionPixelOffset(R.styleable.PullHeaderLayout_phl_header_shrink_height,
                DEFAULT_SHRINK);

        mHeaderId = arr.getResourceId(R.styleable.PullHeaderLayout_phl_header, mHeaderId);
        mContentId = arr.getResourceId(R.styleable.PullHeaderLayout_phl_content, mContentId);

        mActionDrawable = arr.getDrawable(R.styleable.PullHeaderLayout_phl_action);

        arr.recycle();
    }

    mHeaderController = new HeaderController(headerHeight, headerExpandHeight, headerShrinkHeight);

    final ViewConfiguration conf = ViewConfiguration.get(getContext());

    mParentHelper = new NestedScrollingParentHelper(this);
    mChildHelper = new NestedScrollingChildHelper(this);

    setNestedScrollingEnabled(true);

    init();
}
 

public NestedFrameLayout(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    mChildHelper = new NestedScrollingChildHelper(this);
    mParentHelper = new NestedScrollingParentHelper(this);
    setNestedScrollingEnabled(true);
}
 

public HeadViewFrameLayout(Context context, AttributeSet attrs,
                           int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);
    mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    setNestedScrollingEnabled(true);
}
 

public HeaderRefreshLayout(Context context, AttributeSet attrs,
                           int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);
    mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    setNestedScrollingEnabled(true);
    header = new TouchCircleView(getContext());
    header.addLoadingListener(this);
    float density = context.getResources().getDisplayMetrics().density;
    addView(header, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, (int) (density * 120)));
}
 

private void initAttrs(Context context, AttributeSet attrs) {
    TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.QRefreshLayout);
    float resistance = typedArray.getFloat(R.styleable.QRefreshLayout_resistance, 0.65f);
    setResistance(resistance);
    typedArray.recycle();
    mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
    mNestedChildHelper = new NestedScrollingChildHelper(this);
    mNestedParentHelper = new NestedScrollingParentHelper(this);
    mParentOffsetInWindow = new int[2];
}
 

/**
 * Constructor that is called when inflating SwipeRefreshLayout from XML.
 *
 * @param context
 * @param attrs
 */
public SwipeRefreshLayout(Context context, AttributeSet attrs) {
    super(context, attrs);

    mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();

    mMediumAnimationDuration = getResources().getInteger(
            android.R.integer.config_mediumAnimTime);

    setWillNotDraw(false);
    mDecelerateInterpolator = new DecelerateInterpolator(DECELERATE_INTERPOLATION_FACTOR);

    final DisplayMetrics metrics = getResources().getDisplayMetrics();
    mCircleDiameter = (int) (CIRCLE_DIAMETER * metrics.density);

    createProgressView();
    ViewCompat.setChildrenDrawingOrderEnabled(this, true);
    // the absolute offset has to take into account that the circle starts at an offset
    mSpinnerOffsetEnd = (int) (DEFAULT_CIRCLE_TARGET * metrics.density);
    mTotalDragDistance = mSpinnerOffsetEnd;
    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);

    mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    setNestedScrollingEnabled(true);

    mOriginalOffsetTop = mCurrentTargetOffsetTop = -mCircleDiameter;
    moveToStart(1.0f);

    final TypedArray a = context.obtainStyledAttributes(attrs, LAYOUT_ATTRS);
    setEnabled(a.getBoolean(0, true));
    a.recycle();
}
 

/**
 * Constructor that is called when inflating ISwipeRefreshLayout from XML.
 *
 * @param context
 * @param attrs
 */
public ISwipeRefreshLayout(Context context, AttributeSet attrs) {
    super(context, attrs);

    mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();

    mMediumAnimationDuration = getResources().getInteger(
            android.R.integer.config_mediumAnimTime);

    setWillNotDraw(false);
    mDecelerateInterpolator = new DecelerateInterpolator(DECELERATE_INTERPOLATION_FACTOR);

    final DisplayMetrics metrics = getResources().getDisplayMetrics();
    mRefreshViewHeight = (int) (DEFAULT_HEADER_HEIGHT * metrics.density);
    HEADER_VIEW_MIN_HEIGHT = mRefreshViewHeight;
    ViewCompat.setChildrenDrawingOrderEnabled(this, true);
    mTotalDragDistance = (int) (DEFAULT_HEADER_TARGET * metrics.density);
    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);

    mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    setNestedScrollingEnabled(true);

    final TypedArray a = context.obtainStyledAttributes(attrs, LAYOUT_ATTRS);
    setEnabled(a.getBoolean(0, true));
    a.recycle();

    //add default refreshview
    setRefreshHeaderView(new ClassicIRefreshHeaderView(getContext()));
}
 

public ContainerView(Context context) {
    super(context);
    nestedScrollingParentHelper = new NestedScrollingParentHelper(this);
}
 

private void initAttrs(Context context, AttributeSet attrs) {

        if (getChildCount() > 1) {
            throw new RuntimeException("WXSwipeLayout should not have more than one child");
        }

        parentHelper = new NestedScrollingParentHelper(this);

        guidanceViewHeight = dipToPx(context, GUIDANCE_VIEW_HEIGHT);
        guidanceViewFlowHeight = guidanceViewHeight * (float)1.5;

        if (isInEditMode() && attrs == null) {
            return;
        }

        int resId;
        TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.SHSwipeRefreshLayout);
        Resources resources = context.getResources();

        //Indicator背景颜色
        resId = ta.getResourceId(R.styleable.SHSwipeRefreshLayout_guidance_view_bg_color, -1);
        if (resId == -1) {
            mGuidanceViewBgColor = ta.getColor(R.styleable.SHSwipeRefreshLayout_guidance_view_bg_color,
                    Color.WHITE);
        } else {
            mGuidanceViewBgColor = resources.getColor(resId);
        }

        //加载文字颜色
        resId = ta.getResourceId(R.styleable.SHSwipeRefreshLayout_guidance_text_color, -1);
        if (resId == -1) {
            mGuidanceViewTextColor = ta.getColor(R.styleable.SHSwipeRefreshLayout_guidance_text_color,
                    Color.BLACK);
        } else {
            mGuidanceViewTextColor = resources.getColor(resId);
        }

        //进度条背景颜色
        resId = ta.getResourceId(R.styleable.SHSwipeRefreshLayout_progress_bg_color, -1);
        if (resId == -1) {
            mProgressBgColor = ta.getColor(R.styleable.SHSwipeRefreshLayout_progress_bg_color,
                    Color.WHITE);
        } else {
            mProgressBgColor = resources.getColor(resId);
        }

        //进度条颜色
        resId = ta.getResourceId(R.styleable.SHSwipeRefreshLayout_progress_bar_color, -1);
        if (resId == -1) {
            mProgressColor = ta.getColor(R.styleable.SHSwipeRefreshLayout_progress_bar_color,
                    Color.RED);
        } else {
            mProgressColor = resources.getColor(resId);
        }

        //下拉刷新文字描述
        resId = ta.getResourceId(R.styleable.SHSwipeRefreshLayout_refresh_text, -1);
        if (resId == -1) {
            mRefreshDefaulText = ta.getString(R.styleable.SHSwipeRefreshLayout_refresh_text);
        } else {
            mRefreshDefaulText = resources.getString(resId);
        }

        //上拉加载文字描述
        resId = ta.getResourceId(R.styleable.SHSwipeRefreshLayout_load_text, -1);
        if (resId == -1) {
            mLoadDefaulText = ta.getString(R.styleable.SHSwipeRefreshLayout_load_text);
        } else {
            mLoadDefaulText = resources.getString(resId);
        }
    }
 

private void init(Context context)
{
    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);
}
 

public EventResolver(FlingLayout.FlingLayoutContext flingLayoutContext) {
    this.c = flingLayoutContext;
    mParentHelper = new NestedScrollingParentHelper(c.getFlingLayout());
    mChildHelper = new NestedScrollingChildHelper(c.getFlingLayout());
}
 

private void init() {
    mParentHelper = new NestedScrollingParentHelper(this);
    mChildHelper = new NestedScrollingChildHelper(this);
}
 

public ContainerView(Context context)
{
    super(context);
    nestedScrollingParentHelper = new NestedScrollingParentHelper(this);
}
 

private void initView(Context context, AttributeSet attrs) {
	setClipToPadding(false);

	mScreenHeightPixels = context.getResources().getDisplayMetrics().heightPixels;
	mReboundInterpolator = new ViscousFluidInterpolator();
	mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();

	mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);
	mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);

	DensityUtil density = new DensityUtil();
	TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.SmartRefreshLayout);

	ViewCompat.setNestedScrollingEnabled(this, ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnableNestedScrolling, false));
	mDragRate = ta.getFloat(R.styleable.SmartRefreshLayout_srlDragRate, mDragRate);
	mHeaderMaxDragRate = ta.getFloat(R.styleable.SmartRefreshLayout_srlHeaderMaxDragRate, mHeaderMaxDragRate);
	mFooterMaxDragRate = ta.getFloat(R.styleable.SmartRefreshLayout_srlFooterMaxDragRate, mFooterMaxDragRate);
	mEnableRefresh = ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnableRefresh, mEnableRefresh);
	mReboundDuration = ta.getInt(R.styleable.SmartRefreshLayout_srlReboundDuration, mReboundDuration);
	mEnableLoadmore = ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnableLoadmore, mEnableLoadmore);
	mHeaderHeight = ta.getDimensionPixelOffset(R.styleable.SmartRefreshLayout_srlHeaderHeight, density.dip2px(100));
	mFooterHeight = ta.getDimensionPixelOffset(R.styleable.SmartRefreshLayout_srlFooterHeight, density.dip2px(60));
	mDisableContentWhenRefresh = ta.getBoolean(R.styleable.SmartRefreshLayout_srlDisableContentWhenRefresh, mDisableContentWhenRefresh);
	mDisableContentWhenLoading = ta.getBoolean(R.styleable.SmartRefreshLayout_srlDisableContentWhenLoading, mDisableContentWhenLoading);
	mEnableHeaderTranslationContent = ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnableHeaderTranslationContent, mEnableHeaderTranslationContent);
	mEnableFooterTranslationContent = ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnableFooterTranslationContent, mEnableFooterTranslationContent);
	mEnablePreviewInEditMode = ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnablePreviewInEditMode, mEnablePreviewInEditMode);
	mEnableAutoLoadmore = ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnableAutoLoadmore, mEnableAutoLoadmore);
	mEnableOverScrollBounce = ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnableAutoLoadmore, mEnableOverScrollBounce);
	mEnablePureScrollMode = ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnablePureScrollMode, mEnablePureScrollMode);
	mEnableScrollContentWhenLoaded = ta.getBoolean(R.styleable.SmartRefreshLayout_srlEnableScrollContentWhenLoaded, mEnableScrollContentWhenLoaded);
	mFixedHeaderViewId = ta.getResourceId(R.styleable.SmartRefreshLayout_srlFixedHeaderViewId, View.NO_ID);
	mFixedFooterViewId = ta.getResourceId(R.styleable.SmartRefreshLayout_srlFixedFooterViewId, View.NO_ID);

	mManualLoadmore = ta.hasValue(R.styleable.SmartRefreshLayout_srlEnableLoadmore);
	mManualNestedScrolling = ta.hasValue(R.styleable.SmartRefreshLayout_srlEnableNestedScrolling);
	mHeaderHeightStatus = ta.hasValue(R.styleable.SmartRefreshLayout_srlHeaderHeight) ? DimensionStatus.XmlLayoutUnNotify : mHeaderHeightStatus;
	mFooterHeightStatus = ta.hasValue(R.styleable.SmartRefreshLayout_srlFooterHeight) ? DimensionStatus.XmlLayoutUnNotify : mFooterHeightStatus;

	mFooterExtendHeight = (int) Math.max((mFooterHeight * (mHeaderMaxDragRate - 1)), 0);
	mHeaderExtendHeight = (int) Math.max((mHeaderHeight * (mHeaderMaxDragRate - 1)), 0);

	int accentColor = ta.getColor(R.styleable.SmartRefreshLayout_srlAccentColor, 0);
	int primaryColor = ta.getColor(R.styleable.SmartRefreshLayout_srlPrimaryColor, 0);
	if (primaryColor != 0) {
		if (accentColor != 0) {
			mPrimaryColors = new int[]{primaryColor, accentColor};
		} else {
			mPrimaryColors = new int[]{primaryColor};
		}
	}

	ta.recycle();

}
 

public NestedScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    initScrollView();

    final TypedArray a = context.obtainStyledAttributes(
            attrs, SCROLLVIEW_STYLEABLE, defStyleAttr, 0);

    setFillViewport(a.getBoolean(0, false));

    a.recycle();

    mParentHelper = new NestedScrollingParentHelper(this);
    mChildHelper = new NestedScrollingChildHelper(this);

    // ...because why else would you be using this widget?
    setNestedScrollingEnabled(true);

    ViewCompat.setAccessibilityDelegate(this, ACCESSIBILITY_DELEGATE);
}
 

public ContainerView(Context context)
{
    super(context);
    nestedScrollingParentHelper = new NestedScrollingParentHelper(this);
}