Android长截屏-- ScrollView,ListView及RecyclerView截屏

     

/* * Copyright (C) 2016.  BoBoMEe(wbwjx115@gmail.com) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * *  Unless required by applicable law or agreed to in writing, software *  distributed under the License is distributed on an "AS IS" BASIS, *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *  See the License for the specific language governing permissions and *  limitations under the License. */package com.bobomee.android.common.util;import android.app.Activity;import android.content.Context;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Point;import android.graphics.Rect;import android.graphics.drawable.ColorDrawable;import android.graphics.drawable.Drawable;import android.os.Build;import android.support.v4.util.LruCache;import android.support.v7.widget.RecyclerView;import android.util.DisplayMetrics;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.ListAdapter;import android.widget.ListView;import android.widget.ScrollView;import java.util.ArrayList;import java.util.List;/** * 获取屏幕的宽高度 * * @author BoBoMEe */public class ScreenUtil {  /**   * shot the current screen ,with the status but the status is trans *   *   * @param ctx current activity   */  public static Bitmap shotActivity(Activity ctx) {    View view = ctx.getWindow().getDecorView();    view.setDrawingCacheEnabled(true);    view.buildDrawingCache();    Bitmap bp = Bitmap.createBitmap(view.getDrawingCache(), 0, 0, view.getMeasuredWidth(),        view.getMeasuredHeight());    view.setDrawingCacheEnabled(false);    view.destroyDrawingCache();    return bp;  }  /**   * shot the current screen ,with the status and navigationbar*   */  public static Bitmap ShotActivity$WithoutStatus$WithoutNavigationBar(Activity ctx) {    int statusH = getStatusH(ctx);    int navigationBarH = getNavigationBarHeight(ctx);    View view = ctx.getWindow().getDecorView();    view.setDrawingCacheEnabled(true);    view.buildDrawingCache();    Bitmap bp = Bitmap.createBitmap(view.getDrawingCache(), 0, statusH, view.getMeasuredWidth(),        view.getMeasuredHeight() - statusH - navigationBarH);    view.setDrawingCacheEnabled(false);    view.destroyDrawingCache();    return bp;  }  /**   * 获得屏幕高度   */  public static int getScreenWidth(Context context) {    WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);    DisplayMetrics outMetrics = new DisplayMetrics();    wm.getDefaultDisplay().getMetrics(outMetrics);    return outMetrics.widthPixels;  }  /**   * get the height of screen *   */  public static int getScreenH(Context ctx) {    int h = 0;    if (Build.VERSION.SDK_INT > 13) {      Point p = new Point();      ((WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getSize(p);      h = p.y;    } else {      h = ((WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay()          .getHeight();    }    return h;  }  /**   * get the width of screen **   */  public static int getScreenW(Context ctx) {    int w = 0;    if (Build.VERSION.SDK_INT > 13) {      Point p = new Point();      ((WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getSize(p);      w = p.x;    } else {      w = ((WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay()          .getWidth();    }    return w;  }  /**   * get the height of status *   */  public static int getStatusH(Activity ctx) {    Rect s = new Rect();    ctx.getWindow().getDecorView().getWindowVisibleDisplayFrame(s);    return s.top;  }  /**   * get the height of status *   */  public static int getStatusHeight(Context activity) {    int resourceId = activity.getResources().getIdentifier("status_bar_height", "dimen", "android");    return resourceId > 0 ? activity.getResources().getDimensionPixelSize(resourceId) : 0;  }  /**   * get the height of status *   */  public static int getStatusH(Context ctx) {    int statusHeight = -1;    try {      Class
      clazz = Class.forName("com.android.internal.R$dimen");      Object object = clazz.newInstance();      int height = Integer.parseInt(clazz.getField("status_bar_height").get(object).toString());      statusHeight = ctx.getResources().getDimensionPixelSize(height);    } catch (Exception e) {      e.printStackTrace();    }    return statusHeight;  }  /**   * get the height of title *   */  public static int getTitleH(Activity ctx) {    int contentTop = ctx.getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();    return contentTop - getStatusH(ctx);  }  /**   * get the height of NavigationBar   */  public static int getNavigationBarHeight(Activity mActivity) {    Resources resources = mActivity.getResources();    int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");    int height = resources.getDimensionPixelSize(resourceId);    return height;  }  /**   * http://stackoverflow.com/questions/12742343/android-get-screenshot-of-all-listview-items   */  public static Bitmap shotListView(ListView listview) {    ListAdapter adapter = listview.getAdapter();    int itemscount = adapter.getCount();    int allitemsheight = 0;    List
     
       bmps = new ArrayList
      
       ();    for (int i = 0; i < itemscount; i++) {      View childView = adapter.getView(i, null, listview);      childView.measure(          View.MeasureSpec.makeMeasureSpec(listview.getWidth(), View.MeasureSpec.EXACTLY),          View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));      childView.layout(0, 0, childView.getMeasuredWidth(), childView.getMeasuredHeight());      childView.setDrawingCacheEnabled(true);      childView.buildDrawingCache();      bmps.add(childView.getDrawingCache());      allitemsheight += childView.getMeasuredHeight();    }    Bitmap bigbitmap =        Bitmap.createBitmap(listview.getMeasuredWidth(), allitemsheight, Bitmap.Config.ARGB_8888);    Canvas bigcanvas = new Canvas(bigbitmap);    Paint paint = new Paint();    int iHeight = 0;    for (int i = 0; i < bmps.size(); i++) {      Bitmap bmp = bmps.get(i);      bigcanvas.drawBitmap(bmp, 0, iHeight, paint);      iHeight += bmp.getHeight();      bmp.recycle();      bmp = null;    }    return bigbitmap;  }  /**   * https://gist.github.com/PrashamTrivedi/809d2541776c8c141d9a   */  public static Bitmap shotRecyclerView(RecyclerView view) {    RecyclerView.Adapter adapter = view.getAdapter();    Bitmap bigBitmap = null;    if (adapter != null) {      int size = adapter.getItemCount();      int height = 0;      Paint paint = new Paint();      int iHeight = 0;      final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);      // Use 1/8th of the available memory for this memory cache.      final int cacheSize = maxMemory / 8;      LruCache
       
         bitmaCache = new LruCache<>(cacheSize);      for (int i = 0; i < size; i++) {        RecyclerView.ViewHolder holder = adapter.createViewHolder(view, adapter.getItemViewType(i));        adapter.onBindViewHolder(holder, i);        holder.itemView.measure(            View.MeasureSpec.makeMeasureSpec(view.getWidth(), View.MeasureSpec.EXACTLY),            View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));        holder.itemView.layout(0, 0, holder.itemView.getMeasuredWidth(),            holder.itemView.getMeasuredHeight());        holder.itemView.setDrawingCacheEnabled(true);        holder.itemView.buildDrawingCache();        Bitmap drawingCache = holder.itemView.getDrawingCache();        if (drawingCache != null) {          bitmaCache.put(String.valueOf(i), drawingCache);        }        height += holder.itemView.getMeasuredHeight();      }      bigBitmap = Bitmap.createBitmap(view.getMeasuredWidth(), height, Bitmap.Config.ARGB_8888);      Canvas bigCanvas = new Canvas(bigBitmap);      Drawable lBackground = view.getBackground();      if (lBackground instanceof ColorDrawable) {        ColorDrawable lColorDrawable = (ColorDrawable) lBackground;        int lColor = lColorDrawable.getColor();        bigCanvas.drawColor(lColor);      }      for (int i = 0; i < size; i++) {        Bitmap bitmap = bitmaCache.get(String.valueOf(i));        bigCanvas.drawBitmap(bitmap, 0f, iHeight, paint);        iHeight += bitmap.getHeight();        bitmap.recycle();      }    }    return bigBitmap;  }  /**   * http://blog.csdn.net/lyy1104/article/details/40048329   */  public static Bitmap shotScrollView(ScrollView scrollView) {    int h = 0;    Bitmap bitmap = null;    for (int i = 0; i < scrollView.getChildCount(); i++) {      h += scrollView.getChildAt(i).getHeight();      scrollView.getChildAt(i).setBackgroundColor(Color.parseColor("#ffffff"));    }    bitmap = Bitmap.createBitmap(scrollView.getWidth(), h, Bitmap.Config.RGB_565);    final Canvas canvas = new Canvas(bitmap);    scrollView.draw(canvas);    return bitmap;  }  /**   * http://stackoverflow.com/questions/9791714/take-a-screenshot-of-a-whole-view   */  public static Bitmap shotView(View v, int width, int height) {    Bitmap b = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);    Canvas c = new Canvas(b);    v.layout(0, 0, v.getLayoutParams().width, v.getLayoutParams().height);    v.draw(c);    return b;  }}