自定义popupwindow(解决位置控制困惑)-白红宇

自定义popupwindow(解决位置控制困惑)

阅读量：4472 次

发布时间：2019-06-08

本文共 13959 字，大约阅读时间需要 46 分钟。

一。main.xml

二、ActionItem

package net.londatiga.android;import android.graphics.drawable.Drawable;import android.view.View.OnClickListener;/* * 弹出框选项 */public class ActionItem {    private Drawable icon;    private String title;    private OnClickListener listener;    public ActionItem() {
   // 构造方法    }    public ActionItem(Drawable icon) {
   // 构造方法        this.icon = icon;    }    public void setTitle(String title) {
   // 设置文字标题        this.title = title;    }    public String getTitle() {
   // 返回文字标题        return this.title;    }    public void setIcon(Drawable icon) {
   // 设置图标        this.icon = icon;    }    public Drawable getIcon() {
   // 返回图标        return this.icon;    }    public void setOnClickListener(OnClickListener listener) {
   // 设置监听        this.listener = listener;    }    public OnClickListener getListener() {
   // 返回监听        return this.listener;    }}

三、

CustomPopupWindow

package net.londatiga.android;import android.content.Context;import android.graphics.Rect;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup.LayoutParams;import android.view.WindowManager;import android.widget.PopupWindow;public class CustomPopupWindow {        protected final View anchor;        protected final PopupWindow window;        private View root;        private Drawable background = null;        protected final WindowManager windowManager;    public CustomPopupWindow(View anchor) {        this.anchor = anchor;        this.window = new PopupWindow(anchor.getContext());        window.setFocusable(true);        window.setBackgroundDrawable(new BitmapDrawable());        windowManager = (WindowManager) anchor.getContext().getSystemService(Context.WINDOW_SERVICE);    }        protected void onShow() {            }    protected void preShow() {        onShow();        window.setBackgroundDrawable(background);        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;    }    public void setContentView(View root) {        this.root = root;        window.setContentView(root);    }    public void setContentView(int layoutResID) {        LayoutInflater inflator = (LayoutInflater) anchor.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);        setContentView(inflator.inflate(layoutResID, null));    }    public void setOnDismissListener(PopupWindow.OnDismissListener listener) {        window.setOnDismissListener(listener);    }    public void showDropDown() {        showDropDown(0, 0);    }    public void showDropDown(int xOffset, int yOffset) {        preShow();        window.setAnimationStyle(R.style.Animations_PopDownMenu);        window.showAsDropDown(anchor, xOffset, yOffset);    }    public void dismiss() {        window.dismiss();    }}

四、QuickAction

package net.londatiga.android;import android.content.Context;import android.graphics.Rect;import android.graphics.drawable.Drawable;import android.widget.ImageView;import android.widget.TextView;import android.widget.LinearLayout;import android.widget.ScrollView;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup.LayoutParams;import android.view.ViewGroup;import java.util.ArrayList;public class QuickAction extends CustomPopupWindow {        private final View root;    private final ImageView mArrowUp;    private final ImageView mArrowDown;    private final LayoutInflater inflater;    private final Context context;    protected static final int ANIM_GROW_FROM_LEFT = 1;      protected static final int ANIM_GROW_FROM_RIGHT = 2;    protected static final int ANIM_GROW_FROM_CENTER = 3;    protected static final int ANIM_REFLECT = 4;    protected static final int ANIM_AUTO = 5;    private int animStyle;         private ViewGroup mTrack;    private ScrollView scroller;    private ArrayList
     
       actionList;        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.popup, null);        mArrowDown = (ImageView) root.findViewById(R.id.arrow_down);        mArrowUp = (ImageView) root.findViewById(R.id.arrow_up);        setContentView(root);        mTrack = (ViewGroup) root.findViewById(R.id.tracks);        scroller = (ScrollView) root.findViewById(R.id.scroller);        animStyle = ANIM_AUTO;            }    public void setAnimStyle(int animStyle) {        this.animStyle = animStyle;    }    public void addActionItem(ActionItem action) {        actionList.add(action);    }    public void show() {                preShow();        int xPos, yPos;        int[] location = new int[2];        anchor.getLocationOnScreen(location);        Rect anchorRect = new Rect(location[0], location[1], location[0]+ anchor.getWidth(), location[1] + anchor.getHeight());        createActionList();        root.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));                root.measure(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);        int rootHeight = root.getMeasuredHeight();        int rootWidth = root.getMeasuredWidth();        int screenWidth = windowManager.getDefaultDisplay().getWidth();        int screenHeight = windowManager.getDefaultDisplay().getHeight();        if ((anchorRect.left + rootWidth) > screenWidth) {            xPos = anchorRect.left - (rootWidth - anchor.getWidth());        } else {            if (anchor.getWidth() > rootWidth) {                xPos = anchorRect.centerX() - (rootWidth / 2);            } else {                xPos = anchorRect.left;            }        }        int dyTop = anchorRect.top;        int dyBottom = screenHeight - anchorRect.bottom;        boolean onTop = (dyTop > dyBottom) ? true : false;        if (onTop) {            if (rootHeight > dyTop) {                yPos = 15;                LayoutParams l = scroller.getLayoutParams();                l.height = dyTop - anchor.getHeight();            } else {                yPos = anchorRect.top - rootHeight;            }        } else {            yPos = anchorRect.bottom;            if (rootHeight > dyBottom) {                LayoutParams l = scroller.getLayoutParams();                l.height = dyBottom;            }        }        showArrow(((onTop) ? R.id.arrow_down : R.id.arrow_up),                anchorRect.centerX() - xPos);        setAnimationStyle(screenWidth, anchorRect.centerX(), onTop);        window.showAtLocation(anchor, Gravity.NO_GRAVITY, xPos, yPos);    }    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_REFLECT:            window.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Reflect                    : R.style.Animations_PopDownMenu_Reflect);            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_PopUpMenu_Right                        : R.style.Animations_PopDownMenu_Right);            }            break;        }    }    private void createActionList() {        View view;        String title;        Drawable icon;        OnClickListener listener;        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);        }    }    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);        }        if (title != null) {            text.setText(title);            text.setTextSize(14);        }        if (listener != null) {            container.setOnClickListener(listener);        }        return container;    }    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);    }}

五、 TestQuickAction

package net.londatiga.android;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class TestQuickAction extends Activity {    QuickAction qa;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        final ActionItem first = new ActionItem();        first.setTitle("删除数据");         first.setIcon(getResources().getDrawable(R.drawable.dashboard));        first.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                qa.dismiss();                Toast.makeText(TestQuickAction.this, "Dashboard",                        Toast.LENGTH_SHORT).show();            }        });        final ActionItem second = new ActionItem();        second.setTitle("更新数据");        // second.setIcon(getResources().getDrawable(R.drawable.kontak));        second.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                qa.dismiss();                Toast.makeText(TestQuickAction.this, "User & Group",                        Toast.LENGTH_SHORT).show();            }        });        Button btn1 = (Button) this.findViewById(R.id.btn1);        btn1.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                qa = new QuickAction(v);                qa.addActionItem(first);                qa.addActionItem(second);                qa.show();            }        });        Button btn2 = (Button) this.findViewById(R.id.btn2);        btn2.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                qa = new QuickAction(v);                qa.addActionItem(first);                qa.addActionItem(second);                qa.setAnimStyle(QuickAction.ANIM_REFLECT);                qa.show();            }        });        Button btn3 = (Button) this.findViewById(R.id.btn3);        btn3.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                qa = new QuickAction(v);                qa.addActionItem(first);                qa.addActionItem(second);                qa.show();            }        });        Button btn4 = (Button) this.findViewById(R.id.btn4);        btn4.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                qa = new QuickAction(v);                qa.addActionItem(first);                qa.addActionItem(second);                qa.setAnimStyle(QuickAction.ANIM_GROW_FROM_LEFT);                qa.show();            }        });    }}

main.xml