Android截屏分享工具类，默认截取当前页面

主要实现点击按钮之后，截取App当前的页面，保存到SD卡并且调用系统分享功能，把图片分享出去，废话不多说直接上源码

package com.hyx.keefit.util;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.drawable.ColorDrawable;import android.graphics.drawable.Drawable;import android.net.Uri;import android.os.Environment;import android.support.v4.util.LruCache;import android.support.v7.widget.RecyclerView;import android.view.View;import android.widget.Toast;import java.io.File;import java.io.FileOutputStream;/** * Created by Administrator on 2017/4/13 0013. */public class ShareUtil {    private static Bitmap bmp=null;    private static String imagePath;    public static void shotRecyclerView(RecyclerView view) {        RecyclerView.Adapter adapter = view.getAdapter();        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<String, Bitmap> 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();            }            bmp = Bitmap.createBitmap(view.getMeasuredWidth(), height, Bitmap.Config.ARGB_8888);            Canvas bigCanvas = new Canvas(bmp);            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));                try{                    bigCanvas.drawBitmap(bitmap, 0f, iHeight, paint);                    iHeight += bitmap.getHeight();                    bitmap.recycle();                }catch (Exception e){                    e.printStackTrace();                }            }        }        if (bmp != null) {            try {                //这里是SD卡存储                // 获取内置SD卡路径                String sdCardPath = Environment.getExternalStorageDirectory().getPath();                // 图片文件路径                String filePath = sdCardPath + File.separator + "screenshot.png";                File file = new File(filePath);                FileOutputStream os = new FileOutputStream(file);                //这里是内部存储                //String filePath ="screenshot.png";                //FileOutputStream os = openFileOutput(filePath,MODE_PRIVATE);                bmp.compress(Bitmap.CompressFormat.PNG, 100, os);                os.flush();                os.close();            } catch (Exception e) {                //e.printStackTrace();                //Toast.makeText(MainActivity.this,"haha",Toast.LENGTH_LONG).show();            }        }    }    public static void screenshot(Activity activity) {        // 获取屏幕,这4句代码就可以获取屏幕截图        View dView = activity.getWindow().getDecorView();        dView.setDrawingCacheEnabled(true);        dView.buildDrawingCache();        bmp = dView.getDrawingCache();        if (bmp != null) {            try {                //这里是SD卡存储                // 获取内置SD卡路径                String sdCardPath = Environment.getExternalStorageDirectory().getPath();                // 图片文件路径                String filePath = sdCardPath + File.separator + "screenshot.png";                File file = new File(filePath);                FileOutputStream os = new FileOutputStream(file);                //这里是内部存储                //String filePath ="screenshot.png";                //FileOutputStream os = openFileOutput(filePath,MODE_PRIVATE);                bmp.compress(Bitmap.CompressFormat.PNG, 100, os);                os.flush();                os.close();            } catch (Exception e) {                //e.printStackTrace();                //Toast.makeText(MainActivity.this,"haha",Toast.LENGTH_LONG).show();            }        }    }    //分享单张图片    public static void shareSingleImage(Activity activity) {        imagePath = Environment.getExternalStorageDirectory() + File.separator + "screenshot.png";        //由文件得到uri        Uri imageUri = Uri.fromFile(new File(imagePath));        //Log.d("share", "uri:" + imageUri);  //输出：file:///storage/emulated/0/test.jpg        Intent shareIntent = new Intent();        shareIntent.setAction(Intent.ACTION_SEND);        shareIntent.putExtra(Intent.EXTRA_STREAM, imageUri);        shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        shareIntent.setType("image/*");        //这里主要是有选择的选取分享应用，比如过滤蓝牙之类的，但是过滤之后有BUG，目前还没有写出来，如果不需要过滤那么这一段过滤掉        /*        String contentDetails = "";        String contentBrief = "";        String shareUrl = "";        List<ResolveInfo> resInfo = getPackageManager().queryIntentActivities(shareIntent, PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);        for (int n = 0; n < resInfo.size(); n++) {            Log.i("zsy", resInfo.get(n).activityInfo.name + "");        }        if (!resInfo.isEmpty()) {            List<Intent> targetedShareIntents = new ArrayList<Intent>();            HashMap<String, Intent> targetedShareIntentss = new HashMap<String, Intent>();            for (ResolveInfo info : resInfo) {                Intent targeted = new Intent(Intent.ACTION_SEND);                targeted.setType("image/*");                ActivityInfo activityInfo = info.activityInfo;                //Log.i("zsy",activityInfo.packageName);                Log.i("zsy", activityInfo.name);                // judgments : activityInfo.packageName, activityInfo.name, etc.                //这里是进行过滤的方法，根据需要添加                if (activityInfo.packageName.contains("bluetooth") ||activityInfo.name.contains("bluetooth")) {                    continue;                }                targeted.setPackage(activityInfo.packageName);                //targeted.setData(Uri.parse(activityInfo.targetActivity));                targeted.setClassName(activityInfo.packageName, activityInfo.name);                targetedShareIntents.add(targeted);                targetedShareIntentss.put(activityInfo.packageName, targeted);            }            ArrayList<Intent> result = new ArrayList<Intent>();            Iterator it = targetedShareIntentss.entrySet().iterator();            while (it.hasNext()) {                Map.Entry entry = (java.util.Map.Entry) it.next();                result.add((Intent) entry.getValue());            }            Intent chooserIntent = Intent.createChooser(targetedShareIntents.remove(0), "Select app to share");            if (chooserIntent == null) {                return;            }            // A Parcelable[] of Intent or LabeledIntent objects as set with            // putExtra(String, Parcelable[]) of additional activities to place            // a the front of the list of choices, when shown to the user with a            // ACTION_CHOOSER.            try {                chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toArray(new Parcelable[]{}));                startActivity(chooserIntent);            } catch (android.content.ActivityNotFoundException ex) {                Toast.makeText(this, "Can't find share component to share", Toast.LENGTH_SHORT).show();            }        }*/        //这里是要修改的        Intent chooserIntent =Intent.createChooser(shareIntent,"分享到");        if(chooserIntent ==null){            return;        }        try{            activity.startActivity(chooserIntent);        }catch(android.content.ActivityNotFoundException ex){            Toast.makeText(activity,"Can't find share component to share",Toast.LENGTH_SHORT).show();        }        //startActivity(Intent.createChooser(shareIntent, "分享到"));    }}