出處：http://blog.csdn.net/xyz_lmn/article/details/6921097
PopupWindow在android.widget包下，彈出視窗的形式展示。官方文檔對該控件的描述是：“一個彈出視窗控件，可以用來顯示任意視圖(View)，而且會浮動在目前 活動(activity)的頂部”。PopupWindow可以讓我們實作多種自定義控件，例如：menu、alertdialog等彈窗似的View。
UI開發第三篇——popupwindow 中簡單介紹了一些簡單方法，這一篇分享一個執行個體。看效果：
實作中使用的 PopupWindow。這裡做了簡單封裝，其中有三個類組成：PopuItem、PopuJar、PopupWindows。
public class PopuItem {
private Drawable icon;
private Bitmap thumb;
private String title;
private int actionId = -1;
private boolean selected;
private boolean sticky;
/**
* Constructor
*
* @param actionId Action id for case statements
* @param title Title
* @param icon Icon to use
*/
public PopuItem(int actionId, String title, Drawable icon) {
this.title = title;
this.icon = icon;
this.actionId = actionId;
}
public PopuItem() {
this(-1, null, null);
* @param actionId Action id of the item
* @param title Text to show for the item
public PopuItem(int actionId, String title) {
this(actionId, title, null);
* @param icon {@link Drawable} action icon
public PopuItem(Drawable icon) {
this(-1, null, icon);
* @param actionId Action ID of item
* @param icon {@link Drawable} action icon
public PopuItem(int actionId, Drawable icon) {
this(actionId, null, icon);
/**
* Set action title
*
* @param title action title
*/
public void setTitle(String title) {
this.title = title;
}
* Get action title
* @return action title
public String getTitle() {
return this.title;
* Set action icon
* @param icon {@link Drawable} action icon
public void setIcon(Drawable icon) {
this.icon = icon;
* Get action icon
* @return {@link Drawable} action icon
public Drawable getIcon() {
return this.icon;
* Set action id
* @param actionId Action id for this action
public void setActionId(int actionId) {
* @return Our action id
public int getActionId() {
return actionId;
* Set sticky status of button
* @param sticky true for sticky, pop up sends event but does not disappear
public void setSticky(boolean sticky) {
this.sticky = sticky;
* @return true if button is sticky, menu stays visible after press
public boolean isSticky() {
return sticky;
* Set selected flag;
* @param selected Flag to indicate the item is selected
public void setSelected(boolean selected) {
this.selected = selected;
* Check if item is selected
* @return true or false
public boolean isSelected() {
return this.selected;
* Set thumb
* @param thumb Thumb p_w_picpath
public void setThumb(Bitmap thumb) {
this.thumb = thumb;
* Get thumb p_w_picpath
* @return Thumb p_w_picpath
public Bitmap getThumb() {
return this.thumb;
public class PopuJar extends PopupWindows implements OnDismissListener {
private View mRootView;
private ImageView mArrowUp;
private ImageView mArrowDown;
private LayoutInflater mInflater;
private ViewGroup mTrack;
private ScrollView mScroller;
private OnPopuItemClickListener mItemClickListener;
private OnDismissListener mDismissListener;
private List<PopuItem> PopuItems = new ArrayList<PopuItem>();
private boolean mDidAction;
private int mChildPos;
private int mInsertPos;
private int mAnimStyle;
private int mOrientation;
private int rootWidth=0;
public static final int HORIZONTAL = 0;
public static final int VERTICAL = 1;
public static final int ANIM_GROW_FROM_LEFT = 1;
public static final int ANIM_GROW_FROM_RIGHT = 2;
public static final int ANIM_GROW_FROM_CENTER = 3;
public static final int ANIM_REFLECT = 4;
public static final int ANIM_AUTO = 5;
* Constructor for default vertical layout
* @param context Context
public PopuJar(Context context) {
this(context, VERTICAL);
* Constructor allowing orientation override
* @param context Context
* @param orientation Layout orientation, can be vartical or horizontal
public PopuJar(Context context, int orientation) {
super(context);
mOrientation = orientation;
mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (mOrientation == HORIZONTAL) {
setRootViewId(R.layout.popup_horizontal);
} else {
setRootViewId(R.layout.popup_vertical);
}
mAnimStyle = ANIM_AUTO;
mChildPos = 0;
* Get action item at an index
* @param index Index of item (position from callback)
* @return Action Item at the position
public PopuItem getPopuItem(int index) {
return PopuItems.get(index);
* Set root view.
* @param id Layout resource id
public void setRootViewId(int id) {
mRootView = (ViewGroup) mInflater.inflate(id, null);
mTrack = (ViewGroup) mRootView.findViewById(R.id.tracks);
mArrowDown = (ImageView) mRootView.findViewById(R.id.arrow_down);
mArrowUp = (ImageView) mRootView.findViewById(R.id.arrow_up);
mScroller = (ScrollView) mRootView.findViewById(R.id.scroller);
//This was previously defined on show() method, moved here to prevent force close that occured
//when tapping fastly on a view to show quickaction dialog.
//Thanx to zammbi (github.com/zammbi)
mRootView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
setContentView(mRootView);
* Set animation style
* @param mAnimStyle animation style, default is set to ANIM_AUTO
public void setAnimStyle(int mAnimStyle) {
this.mAnimStyle = mAnimStyle;
* Set listener for action item clicked.
* @param listener Listener
public void setOnPopuItemClickListener(OnPopuItemClickListener listener) {
mItemClickListener = listener;
* Add action item
* @param action {@link PopuItem}
public void addPopuItem(PopuItem action) {
PopuItems.add(action);
String title = action.getTitle();
Drawable icon = action.getIcon();
View container;
if (mOrientation == HORIZONTAL) {
container = mInflater.inflate(R.layout.action_item_horizontal, null);
container = mInflater.inflate(R.layout.action_item_vertical, null);
ImageView img = (ImageView) container.findViewById(R.id.iv_icon);
TextView text = (TextView) container.findViewById(R.id.tv_title);
if (icon != null) {
img.setImageDrawable(icon);
} else {
img.setVisibility(View.GONE);
if (title != null) {
text.setText(title);
text.setVisibility(View.GONE);
final int pos = mChildPos;
final int actionId = action.getActionId();
container.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (mItemClickListener != null) {
mItemClickListener.onItemClick(PopuJar.this, pos, actionId);
}
if (!getPopuItem(pos).isSticky()) {
mDidAction = true;
dismiss();
});
container.setFocusable(true);
container.setClickable(true);
if (mOrientation == HORIZONTAL && mChildPos != 0) {
View separator = mInflater.inflate(R.layout.horiz_separator, null);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT);
separator.setLayoutParams(params);
separator.setPadding(5, 0, 5, 0);
mTrack.addView(separator, mInsertPos);
mInsertPos++;
mTrack.addView(container, mInsertPos);
mChildPos++;
mInsertPos++;
* Show quickaction popup. Popup is automatically positioned, on top or bottom of anchor view.
public void show (View anchor) {
preShow();
int xPos, yPos, arrowPos;
mDidAction = false;
int[] location = new int[2];
anchor.getLocationOnScreen(location);
Rect anchorRect = new Rect(location[0], location[1], location[0] + anchor.getWidth(), location[1]
+ anchor.getHeight());
//mRootView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
mRootView.measure(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
int rootHeight = mRootView.getMeasuredHeight();
if (rootWidth == 0) {
rootWidth = mRootView.getMeasuredWidth();
int screenWidth = mWindowManager.getDefaultDisplay().getWidth();
int screenHeight = mWindowManager.getDefaultDisplay().getHeight();
//automatically get X coord of popup (top left)
if ((anchorRect.left + rootWidth) > screenWidth) {
xPos = anchorRect.left - (rootWidth-anchor.getWidth());
xPos = (xPos < 0) ? 0 : xPos;
arrowPos = anchorRect.centerX()-xPos;
if (anchor.getWidth() > rootWidth) {
xPos = anchorRect.centerX() - (rootWidth/2);
xPos = anchorRect.left;
arrowPos = anchorRect.centerX()-xPos;
int dyTop = anchorRect.top;
int dyBottom = screenHeight - anchorRect.bottom;
boolean onTop = (dyTop > dyBottom) ? true : false;
if (onTop) {
if (rootHeight > dyTop) {
yPos = 15;
LayoutParams l = mScroller.getLayoutParams();
l.height = dyTop - anchor.getHeight();
yPos = anchorRect.top - rootHeight;
yPos = anchorRect.bottom;
if (rootHeight > dyBottom) {
l.height = dyBottom;
showArrow(((onTop) ? R.id.arrow_down : R.id.arrow_up), arrowPos);
setAnimationStyle(screenWidth, anchorRect.centerX(), onTop);
mWindow.showAtLocation(anchor, Gravity.NO_GRAVITY, xPos, yPos);
* @param screenWidth screen width
* @param requestedX distance from left edge
* @param onTop flag to indicate where the popup should be displayed. Set TRUE if displayed on top of anchor view
* and vice versa
private void setAnimationStyle(int screenWidth, int requestedX, boolean onTop) {
int arrowPos = requestedX - mArrowUp.getMeasuredWidth()/2;
switch (mAnimStyle) {
case ANIM_GROW_FROM_LEFT:
mWindow.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Left : R.style.Animations_PopDownMenu_Left);
break;
case ANIM_GROW_FROM_RIGHT:
mWindow.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Right : R.style.Animations_PopDownMenu_Right);
case ANIM_GROW_FROM_CENTER:
mWindow.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Center : R.style.Animations_PopDownMenu_Center);
case ANIM_REFLECT:
mWindow.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Reflect : R.style.Animations_PopDownMenu_Reflect);
case ANIM_AUTO:
if (arrowPos <= screenWidth/4) {
} else if (arrowPos > screenWidth/4 && arrowPos < 3 * (screenWidth/4)) {
* Show arrow
* @param whichArrow arrow type resource id
* @param requestedX distance from left screen
private void showArrow(int whichArrow, int requestedX) {
final View showArrow = (whichArrow == R.id.arrow_up) ? mArrowUp : mArrowDown;
final View hideArrow = (whichArrow == R.id.arrow_up) ? mArrowDown : mArrowUp;
final int arrowWidth = mArrowUp.getMeasuredWidth();
showArrow.setVisibility(View.VISIBLE);
ViewGroup.MarginLayoutParams param = (ViewGroup.MarginLayoutParams)showArrow.getLayoutParams();
param.leftMargin = requestedX - arrowWidth / 2;
hideArrow.setVisibility(View.INVISIBLE);
* Set listener for window dismissed. This listener will only be fired if the quicakction dialog is dismissed
* by clicking outside the dialog or clicking on sticky item.
public void setOnDismissListener(PopuJar.OnDismissListener listener) {
setOnDismissListener(this);
mDismissListener = listener;
public void onDismiss() {
if (!mDidAction && mDismissListener != null) {
mDismissListener.onDismiss();
* Listener for item click
*
public interface OnPopuItemClickListener {
public abstract void onItemClick(PopuJar source, int pos, int actionId);
* Listener for window dismiss
public interface OnDismissListener {
public abstract void onDismiss();
public class PopupWindows {
protected Context mContext;
protected PopupWindow mWindow;
protected View mRootView;
protected Drawable mBackground = null;
protected WindowManager mWindowManager;
* Constructor.
* @param context Context
public PopupWindows(Context context) {
mContext = context;
mWindow = new PopupWindow(context);
mWindow.setTouchInterceptor(new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_OUTSIDE) {
mWindow.dismiss();
return true;
return false;
mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
* On dismiss
protected void onDismiss() {
* On show
protected void onShow() {
* On pre show
protected void preShow() {
if (mRootView == null)
throw new IllegalStateException("setContentView was not called with a view to display.");
onShow();
if (mBackground == null)
mWindow.setBackgroundDrawable(new BitmapDrawable());
else
mWindow.setBackgroundDrawable(mBackground);
mWindow.setWidth(WindowManager.LayoutParams.WRAP_CONTENT);
mWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);
mWindow.setTouchable(true);
mWindow.setFocusable(true);
mWindow.setOutsideTouchable(true);
mWindow.setContentView(mRootView);
* Set background drawable.
* @param background Background drawable
public void setBackgroundDrawable(Drawable background) {
mBackground = background;
* Set content view.
* @param root Root view
public void setContentView(View root) {
mRootView = root;
mWindow.setContentView(root);
* @param layoutResID Resource id
public void setContentView(int layoutResID) {
LayoutInflater inflator = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
setContentView(inflator.inflate(layoutResID, null));
* Set listener on window dismissed.
* @param listener
public void setOnDismissListener(PopupWindow.OnDismissListener listener) {
mWindow.setOnDismissListener(listener);
* Dismiss the popup window.
public void dismiss() {
Popu調用時在onCreate使用如下：
[java] view plaincopyprint?
PopuItem userItem = new PopuItem(ID_USER, "使用者", getResources().getDrawable(R.drawable.child_p_w_picpath));
PopuItem grounpItem = new PopuItem(ID_GROUNP, "群組", getResources().getDrawable(R.drawable.user_group));
//use setSticky(true) to disable PopuJar dialog being dismissed after an item is clicked
userItem.setSticky(true);
//create PopuJar. Use PopuJar.VERTICAL or PopuJar.HORIZONTAL param to define layout
final PopuJar mPopu = new PopuJar(this, PopuJar.VERTICAL);
//add action items into PopuJar
mPopu.addPopuItem(userItem);
mPopu.addPopuItem(grounpItem);
顯示popu：
mPopu.show(v); //v表示顯示在那個view下面