Sunday, July 17, 2011

how to create popup menu in android


Here i show the how to create popup menu with list in android...

ActionItem.java
------------------------


public class ActionItem {
private Drawable icon;
private Bitmap thumb;
private String title;
private boolean selected;
private OnClickListener listener;
public ActionItem() {}
public ActionItem(Drawable icon) {
this.icon = icon;
}
public void setTitle(String title) {
this.title = title;
}
public String getTitle() {
return this.title;
}
public void setIcon(Drawable icon) {
this.icon = icon;
}
public Drawable getIcon() {
return this.icon;
}
public void setOnClickListener(OnClickListener listener) {
this.listener = listener;
}
public OnClickListener getListener() {
return this.listener;
}
public void setSelected(boolean selected) {
this.selected = selected;
}
public boolean isSelected() {
return this.selected;
}

public void setThumb(Bitmap thumb) {
this.thumb = thumb;
}
public Bitmap getThumb() {
return this.thumb;
}
}

CustomPopupWindow.java
------------------------------------


public class CustomPopupWindow {
protected final View anchor;
protected final PopupWindow window;
private View root;
private Drawable background = null;
protected final WindowManager windowManager;
/**
* Create a QuickAction
*
* @param anchor
* the view that the QuickAction will be displaying 'from'
*/
public CustomPopupWindow(View anchor) {
this.anchor = anchor;
this.window = new PopupWindow(anchor.getContext());

// when a touch even happens outside of the window
// make the window go away
window.setTouchInterceptor(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_OUTSIDE) {
CustomPopupWindow.this.window.dismiss();
return true;
}
return false;
}
});

windowManager = (WindowManager) anchor.getContext().getSystemService(Context.WINDOW_SERVICE);
onCreate();
}

/**
* Anything you want to have happen when created. Probably should create a view and setup the event listeners on
* child views.
*/
protected void onCreate() {}

/**
* In case there is stuff to do right before displaying.
*/
protected void onShow() {}

protected void preShow() {
if (root == null) {
throw new IllegalStateException("setContentView was not called with a view to display.");
}
onShow();

if (background == null) {
window.setBackgroundDrawable(new BitmapDrawable());
} else {
window.setBackgroundDrawable(background);
}

// if using PopupWindow#setBackgroundDrawable this is the only values of the width and hight that make it work
// otherwise you need to set the background of the root viewgroup
// and set the popupwindow background to an empty BitmapDrawable
window.setWidth(WindowManager.LayoutParams.WRAP_CONTENT);
window.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);
window.setTouchable(true);
window.setFocusable(true);
window.setOutsideTouchable(true);

window.setContentView(root);
}

public void setBackgroundDrawable(Drawable background) {
this.background = background;
}

/**
* Sets the content view. Probably should be called from {@link onCreate}
*
* @param root
* the view the popup will display
*/
public void setContentView(View root) {
this.root = root;
window.setContentView(root);
}

/**
* Will inflate and set the view from a resource id
*
* @param layoutResID
*/
public void setContentView(int layoutResID) {
LayoutInflater inflator =
(LayoutInflater) anchor.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
setContentView(inflator.inflate(layoutResID, null));
}

/**
* If you want to do anything when {@link dismiss} is called
*
* @param listener
*/
public void setOnDismissListener(PopupWindow.OnDismissListener listener) {
window.setOnDismissListener(listener);
}

/**
* Displays like a popdown menu from the anchor view
*/
public void showDropDown() {
showDropDown(0, 0);
}

/**
* Displays like a popdown menu from the anchor view.
*
* @param xOffset
* offset in X direction
* @param yOffset
* offset in Y direction
*/
public void showDropDown(int xOffset, int yOffset) {
preShow();

window.setAnimationStyle(R.style.Animations_PopDownMenu_Left);

window.showAsDropDown(anchor, xOffset, yOffset);
}

/**
* Displays like a QuickAction from the anchor view.
*/
public void showLikeQuickAction() {
showLikeQuickAction(0, 0);
}

/**
* Displays like a QuickAction from the anchor view.
*
* @param xOffset
* offset in the X direction
* @param yOffset
* offset in the Y direction
*/
public void showLikeQuickAction(int xOffset, int yOffset) {
preShow();

window.setAnimationStyle(R.style.Animations_PopUpMenu_Center);

int[] location = new int[2];
anchor.getLocationOnScreen(location);

Rect anchorRect =
new Rect(location[0], location[1], location[0] + anchor.getWidth(), location[1]
+ anchor.getHeight());

root.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
root.measure(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
int rootWidth = root.getMeasuredWidth();
int rootHeight = root.getMeasuredHeight();

int screenWidth = windowManager.getDefaultDisplay().getWidth();
//int screenHeight = windowManager.getDefaultDisplay().getHeight();

int xPos = ((screenWidth - rootWidth) / 2) + xOffset;
int yPos = anchorRect.top - rootHeight + yOffset;

// display on bottom
if (rootHeight > anchor.getTop()) {
yPos = anchorRect.bottom + yOffset;
window.setAnimationStyle(R.style.Animations_PopDownMenu_Center);
}

window.showAtLocation(anchor, Gravity.NO_GRAVITY, xPos, yPos);
}
public void dismiss() {
window.dismiss();
}
}

NewQA.java
--------------

public class NewQA extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ListView mList = (ListView) findViewById(R.id.l_list);
NewQAAdapter adapter = new NewQAAdapter(this);
final String[] data = {"Test 01", "Test 02", "Test 03", "Test 04", "Test 05", "Test 06", "Test 07", "Test 08",
"Test 09", "Test 10"};
adapter.setData(data);
mList.setAdapter(adapter);
final ActionItem addAction = new ActionItem();
addAction.setTitle("Add");
addAction.setIcon(getResources().getDrawable(R.drawable.ic_add));

final ActionItem accAction = new ActionItem();
accAction.setTitle("Accept");
accAction.setIcon(getResources().getDrawable(R.drawable.ic_accept));
final ActionItem upAction = new ActionItem();
upAction.setTitle("Upload");
upAction.setIcon(getResources().getDrawable(R.drawable.ic_up));
mList.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View view, int position, long id) {
final QuickAction mQuickAction = new QuickAction(view);
final ImageView mMoreImage = (ImageView) view.findViewById(R.id.i_more);
final String text = data[position];
mMoreImage.setImageResource(R.drawable.ic_list_more_selected);
addAction.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(NewQA.this, "Add " + text, Toast.LENGTH_SHORT).show();
mQuickAction.dismiss();
}
});

accAction.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(NewQA.this, "Accept " + text, Toast.LENGTH_SHORT).show();
mQuickAction.dismiss();
}
});
upAction.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(NewQA.this, "Upload " + text, Toast.LENGTH_SHORT).show();
mQuickAction.dismiss();
}
});
mQuickAction.addActionItem(addAction);
mQuickAction.addActionItem(accAction);
mQuickAction.addActionItem(upAction);
mQuickAction.setAnimStyle(QuickAction.ANIM_AUTO);
mQuickAction.setOnDismissListener(new OnDismissListener() {
@Override
public void onDismiss() {
mMoreImage.setImageResource(R.drawable.ic_list_more);
}
});
mQuickAction.show();
}
});
}
}

NewQAAdapter.java
-------------------------


public class NewQAAdapter extends BaseAdapter {
private LayoutInflater mInflater;
private String[] data;
public NewQAAdapter(Context context) {
mInflater = LayoutInflater.from(context);
}

public void setData(String[] data) {
this.data = data;
}
@Override
public int getCount() {
return data.length;
}

@Override
public Object getItem(int item) {
return data[item];
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list, null);
holder = new ViewHolder();
holder.mTitleText = (TextView) convertView.findViewById(R.id.t_name);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}

holder.mTitleText.setText(data[position]);
return convertView;
}

static class ViewHolder {
TextView mTitleText;
}
}

QuickAction.java
--------------------------

public class QuickAction extends CustomPopupWindow {
private final View root;
private final ImageView mArrowUp;
private final ImageView mArrowDown;
private final Animation mTrackAnim;
private final LayoutInflater inflater;
private final Context context;
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_AUTO = 4;
private int animStyle;
private boolean animateTrack;
private ViewGroup mTrack;
private ArrayList actionList;
/**
* Constructor
*
* @param anchor {@link View} on where the popup should be displayed
*/
public QuickAction(View anchor) {
super(anchor);
actionList = new ArrayList();
context = anchor.getContext();
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
root = (ViewGroup) inflater.inflate(R.layout.quickaction, null);
mArrowDown = (ImageView) root.findViewById(R.id.arrow_down);
mArrowUp = (ImageView) root.findViewById(R.id.arrow_up);
setContentView(root);
mTrackAnim = AnimationUtils.loadAnimation(anchor.getContext(), R.anim.rail);
mTrackAnim.setInterpolator(new Interpolator() {
public float getInterpolation(float t) {
// Pushes past the target area, then snaps back into place.
// Equation for graphing: 1.2-((x*1.6)-1.1)^2
final float inner = (t * 1.55f) - 1.1f;
return 1.2f - inner * inner;
}
});
mTrack = (ViewGroup) root.findViewById(R.id.tracks);
animStyle = ANIM_AUTO;
animateTrack = true;
}

/**
* Animate track
*
* @param animateTrack flag to animate track
*/
public void animateTrack(boolean animateTrack) {
this.animateTrack = animateTrack;
}
/**
* Set animation style
*
* @param animStyle animation style, default is set to ANIM_AUTO
*/
public void setAnimStyle(int animStyle) {
this.animStyle = animStyle;
}

/**
* Add action item
*
* @param action {@link ActionItem}
*/
public void addActionItem(ActionItem action) {
actionList.add(action);
}
/**
* Show popup window
*/
public void show () {
preShow();

int[] location = new int[2];
anchor.getLocationOnScreen(location);

Rect anchorRect = new Rect(location[0], location[1], location[0] + anchor.getWidth(), location[1]
+ anchor.getHeight());

root.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
root.measure(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
int rootWidth = root.getMeasuredWidth();
int rootHeight = root.getMeasuredHeight();

int screenWidth = windowManager.getDefaultDisplay().getWidth();
//int screenHeight = windowManager.getDefaultDisplay().getHeight();

int xPos = (screenWidth - rootWidth) / 2;
int yPos = anchorRect.top - rootHeight;

boolean onTop = true;
// display on bottom
if (rootHeight > anchor.getTop()) {
yPos = anchorRect.bottom;
onTop = false;
}

showArrow(((onTop) ? R.id.arrow_down : R.id.arrow_up), anchorRect.centerX());
setAnimationStyle(screenWidth, anchorRect.centerX(), onTop);
createActionList();
window.showAtLocation(this.anchor, Gravity.NO_GRAVITY, xPos, yPos);
if (animateTrack) mTrack.startAnimation(mTrackAnim);
}
/**
* Set animation style
*
* @param screenWidth Screen width
* @param requestedX distance from left screen
* @param onTop flag to indicate where the popup should be displayed. Set TRUE if displayed on top of anchor and vice versa
*/
private void setAnimationStyle(int screenWidth, int requestedX, boolean onTop) {
int arrowPos = requestedX - mArrowUp.getMeasuredWidth()/2;

switch (animStyle) {
case ANIM_GROW_FROM_LEFT:
window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Left : R.style.Animations_PopDownMenu_Left);
break;
case ANIM_GROW_FROM_RIGHT:
window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Right : R.style.Animations_PopDownMenu_Right);
break;
case ANIM_GROW_FROM_CENTER:
window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Center : R.style.Animations_PopDownMenu_Center);
break;
case ANIM_AUTO:
if (arrowPos <= screenWidth/4) {
window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Left : R.style.Animations_PopDownMenu_Left);
} else if (arrowPos > screenWidth/4 && arrowPos < 3 * (screenWidth/4)) {
window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Center : R.style.Animations_PopDownMenu_Center);
} else {
window.setAnimationStyle((onTop) ? R.style.Animations_PopDownMenu_Right : R.style.Animations_PopDownMenu_Right);
}
break;
}
}
/**
* Create action list
*
*/
private void createActionList() {
View view;
String title;
Drawable icon;
OnClickListener listener;
int index = 1;
for (int i = 0; i < actionList.size(); i++) {
title = actionList.get(i).getTitle();
icon = actionList.get(i).getIcon();
listener = actionList.get(i).getListener();
view = getActionItem(title, icon, listener);
view.setFocusable(true);
view.setClickable(true);
mTrack.addView(view, index);
index++;
}
}
/**
* Get action item {@link View}
*
* @param title action item title
* @param icon {@link Drawable} action item icon
* @param listener {@link View.OnClickListener} action item listener
* @return action item {@link View}
*/
private View getActionItem(String title, Drawable icon, OnClickListener listener) {
LinearLayout container = (LinearLayout) inflater.inflate(R.layout.action_item, null);
ImageView img = (ImageView) container.findViewById(R.id.icon);
TextView text = (TextView) container.findViewById(R.id.title);
if (icon != null) {
img.setImageDrawable(icon);
} else {
img.setVisibility(View.GONE);
}
if (title != null) {
text.setText(title);
} else {
text.setVisibility(View.GONE);
}
if (listener != null) {
container.setOnClickListener(listener);
}

return container;
}
/**
* 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);
}
}