android popupwindow位置

来源：互联网发布：淘宝放单群编辑：程序博客网时间：2024/05/17 06:09

因为要做recyclerview点击弹窗问题，感觉popupwindow能够比较好的处理焦点和位置问题，来看看位置的处理

activity

package com.fanyafeng.orlitedemo.activity;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.support.design.widget.FloatingActionButton;import android.support.design.widget.Snackbar;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.Toolbar;import android.util.Log;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.PopupWindow;import com.fanyafeng.orlitedemo.BaseActivity;import com.fanyafeng.orlitedemo.R;import com.fanyafeng.orlitedemo.util.MyUtils;import java.io.File;import java.util.ArrayList;import java.util.List;public class PopupWindowActivity extends BaseActivity {    private Button btn_bottom_pop;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_popup_window);        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);        setSupportActionBar(toolbar);        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);        fab.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)                        .setAction("Action", null).show();            }        });        initView();        initData();    }    private void initView() {        btn_bottom_pop = (Button) findViewById(R.id.btn_bottom_pop);    }    private void initData() {    }    private void downShowPopupWindow(View view) {        PopupWindow popupWindow;        View popView = getLayoutInflater().inflate(R.layout.layout_popwindow_recyclerview, null);        popupWindow = new PopupWindow(popView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);        popupWindow.setTouchable(true);        popupWindow.setOutsideTouchable(true);        popupWindow.setBackgroundDrawable(new BitmapDrawable(getResources(), (Bitmap) null));        popupWindow.showAsDropDown(view);    }    private void bottomShowPopupWindow(View view) {        PopupWindow popupWindow;        View popView = getLayoutInflater().inflate(R.layout.layout_popwindow_recyclerview, null);        popupWindow = new PopupWindow(popView, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);        popupWindow.setTouchable(true);        popupWindow.setOutsideTouchable(true);        popupWindow.setBackgroundDrawable(new BitmapDrawable(getResources(), (Bitmap) null));        float popupWindowWidth = MyUtils.dip2px(this, 96);        Log.d("TAG", "pop的宽度:" + popupWindowWidth);        int offsetX = MyUtils.getScreenWidth(this) / 2;        int[] location = new int[2];        btn_bottom_pop.getLocationInWindow(location);        int popX = location[0];        int popY = location[1];        //相对位置,子点击的控件和margin开始定为原点(0,0)        popupWindow.showAsDropDown(view, offsetX - (int) popupWindowWidth / 2,                MyUtils.getScreenHeight(this) - MyUtils.getNavigationBarHeight(this) - (int) MyUtils.dip2px(this, 80) - popY);    }    private void bottomCenterShowPopupWindow(View view) {        PopupWindow popupWindow;        View popView = getLayoutInflater().inflate(R.layout.layout_popwindow_recyclerview, null);        popupWindow = new PopupWindow(popView, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);        popupWindow.setTouchable(true);        popupWindow.setOutsideTouchable(true);        popupWindow.setBackgroundDrawable(new BitmapDrawable(getResources(), (Bitmap) null));        popupWindow.showAtLocation(view, Gravity.CENTER, 0, MyUtils.getScreenHeight(this) - MyUtils.getNavigationBarHeight(this));    }    @Override    public void onClick(View v) {        super.onClick(v);        switch (v.getId()) {            case R.id.btn_down_pop:                downShowPopupWindow(v);                break;            case R.id.btn_bottom_pop:                bottomShowPopupWindow(v);                break;            case R.id.btn_bottom_center_pop:                bottomCenterShowPopupWindow(v);                break;        }    }}

再来看用到的工具类myutils

package com.fanyafeng.orlitedemo.util;import android.app.Activity;import android.content.Context;import android.content.pm.ApplicationInfo;import android.content.pm.PackageManager;import android.content.res.Resources;import android.graphics.Rect;import android.os.Build;import android.util.DisplayMetrics;import android.view.ViewConfiguration;import android.view.Window;import android.view.WindowManager;import java.lang.reflect.Field;import java.lang.reflect.Method;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;public class MyUtils {    private static String channel = null;    public static String getChannel(Context context) {        if (channel == null) {            ApplicationInfo ai = null;            channel = "shape_maintext_box";            try {                ai = context.getPackageManager().getApplicationInfo(context.getPackageName(), PackageManager.GET_META_DATA);                if (ai != null) {                    channel = String.valueOf(ai.metaData.get("UMENG_CHANNEL"));                }            } catch (Exception e) {                e.printStackTrace();            }        }        return channel;    }    public static int getStatusBarHeight(Context context) {        try {            @SuppressWarnings("rawtypes")            Class clazz = Class.forName("com.android.internal.R$dimen");            Object object = clazz.newInstance();            Field field = clazz.getField("status_bar_height");            int id = Integer.parseInt(field.get(object).toString());            return context.getResources().getDimensionPixelSize(id);        } catch (Exception e) {            e.printStackTrace();        }        return 0;    }    /**     * Get the screen height.     *     * @param context     * @return the screen height     */    public static int getScreenHeight(Context context) {        if (context != null) {            DisplayMetrics displayMetrics = new DisplayMetrics();            WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);            windowManager.getDefaultDisplay().getMetrics(displayMetrics);            return displayMetrics.heightPixels;        } else {            return 1920;        }    }    /**     * Get the screen width.     *     * @param context     * @return the screen width     */    public static int getScreenWidth(Context context) {        if (context != null) {            DisplayMetrics displayMetrics = new DisplayMetrics();            WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);            windowManager.getDefaultDisplay().getMetrics(displayMetrics);            return displayMetrics.widthPixels;        } else {            return 1080;        }    }    public static float getDensity(Context context) {        DisplayMetrics displayMetrics = new DisplayMetrics();        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);        windowManager.getDefaultDisplay().getMetrics(displayMetrics);        return displayMetrics.density;    }    public static String getMetaValue(Context context, String metaKey) {        if (context == null || metaKey == null) {            return null;        }        try {            ApplicationInfo aiApplicationInfo = context.getPackageManager().getApplicationInfo(                    context.getPackageName(), PackageManager.GET_META_DATA);            if (null != aiApplicationInfo) {                if (null != aiApplicationInfo.metaData) {                    return aiApplicationInfo.metaData.getString(metaKey);                }            }        } catch (PackageManager.NameNotFoundException e) {            e.printStackTrace();        }        return null;    }    /**     * 格式化日期     * yyyy-MM-dd 转为 yyyy年MM月dd日     *     * @param dateStr     * @return     */    public static String formatSystemDateCN(String dateStr) {        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");        try {            String standarTime;            Date date = simpleDateFormat.parse(dateStr);            simpleDateFormat = new SimpleDateFormat("yyyy年MM月dd日");            standarTime = simpleDateFormat.format(date);            return standarTime;        } catch (ParseException e) {            e.printStackTrace();        }        return dateStr;    }    public static float dip2px(Context context, float dipValue) {        final float scale = context.getResources().getDisplayMetrics().density;        return (float) (dipValue * scale + 0.5f);    }    public static float px2dip(Context context, float pxValue) {        final float scale = context.getResources().getDisplayMetrics().density;        return (float) (pxValue / scale + 0.5f);    }    /**     * 获取标题栏的高度     *     * @param activity     * @return     */    public int getTitleHeight(Activity activity) {        Rect rect = new Rect();        Window window = activity.getWindow();        window.getDecorView().getWindowVisibleDisplayFrame(rect);        int statusBarHeight = rect.top;        int contentViewTop = window.findViewById(Window.ID_ANDROID_CONTENT).getTop();        int titleBarHeight = contentViewTop - statusBarHeight;        return titleBarHeight;    }    /**     *     * 获取状态栏高度     *     * @param activity     * @return     */    public int getStateHeight(Activity activity) {        Rect rect = new Rect();        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);        return rect.top;    }    /**     * 获取屏幕宽高     *     * @param activity     * @return int[0] 宽，int[1]高     */    public int[] getScreenWidthAndSizeInPx(Activity activity) {        DisplayMetrics displayMetrics = new DisplayMetrics();        activity.getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);        int[] size = new int[2];        size[0] = displayMetrics.widthPixels;        size[1] = displayMetrics.heightPixels;        return size;    }    /**     * 获取虚拟按键栏高度     * @param context     * @return     */    public static int getNavigationBarHeight(Context context) {        int result = 0;        if (hasNavBar(context)){            Resources res = context.getResources();            int resourceId = res.getIdentifier("navigation_bar_height", "dimen", "android");            if (resourceId > 0) {                result = res.getDimensionPixelSize(resourceId);            }        }        return result;    }    /**     * 检查是否存在虚拟按键栏     * @param context     * @return     */    private static boolean hasNavBar(Context context) {        Resources res = context.getResources();        int resourceId = res.getIdentifier("config_showNavigationBar", "bool", "android");        if (resourceId != 0) {            boolean hasNav = res.getBoolean(resourceId);            // check override flag            String sNavBarOverride = getNavBarOverride();            if ("1".equals(sNavBarOverride)) {                hasNav = false;            } else if ("0".equals(sNavBarOverride)) {                hasNav = true;            }            return hasNav;        } else { // fallback            return !ViewConfiguration.get(context).hasPermanentMenuKey();        }    }    /**     * 判断虚拟按键栏是否重写     * @return     */    private static String getNavBarOverride() {        String sNavBarOverride = null;        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {            try {                Class c = Class.forName("android.os.SystemProperties");                Method m = c.getDeclaredMethod("get", String.class);                m.setAccessible(true);                sNavBarOverride = (String) m.invoke(null, "qemu.hw.mainkeys");            } catch (Throwable e) {            }        }        return sNavBarOverride;    }}

基本主要的是位置的原点坐标，知道这个剩下的就好处理了

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