Android实现截屏，将截图文件保存到本地文件夹

Android实现对当前界面截屏，并将截图文件存放至本地文件夹

首先需要动态申请两项权限（Android6.0后危险权限之类的都需要动态申请），在AndroidManifest.xml中静态添加

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

其中<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>会报错提示

Permission is only granted to system apps,解决方案：

点击File—>Settings—>Editor—>Inspections—>搜索Using system app permission,将Error改为Waring。

解决以后再Acrivity中动态申请该权限，调用以下代码

private static final int REQUEST_EXTERNAL_STORAGE = 1;
private static String[] PERMISSIONS_STORAGE = {
        Manifest.permission.READ_EXTERNAL_STORAGE,
        Manifest.permission.WRITE_EXTERNAL_STORAGE};

public static void verifyStoragePermissions(Activity activity) {
    // Check if we have write permission
    int permission = ActivityCompat.checkSelfPermission(activity,
            Manifest.permission.WRITE_EXTERNAL_STORAGE);

    if (permission != PackageManager.PERMISSION_GRANTED) {
        // We don't have permission so prompt the user
        ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,
                REQUEST_EXTERNAL_STORAGE);
    }
}

然后通过创建一个ScreenShot的工具类来进行管理和操作

package com.example.administrator.screenshot.util;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.os.Environment;
import android.util.Log;
import android.view.View;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ScreenShot {
    // 获取指定Activity的截屏，保存到png文件
    static String newFilePath;
    private static Bitmap takeScreenShot(Activity activity) {
        // View是你需要截图的View
        View view = activity.getWindow().getDecorView();
        view.setDrawingCacheEnabled(true);
        view.buildDrawingCache();
        Bitmap b1 = view.getDrawingCache();

        // 获取状态栏高度
        Rect frame = new Rect();
        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
        int statusBarHeight = frame.top;
        Log.i("TAG", "" + statusBarHeight);

        // 获取屏幕长和高
        int width = activity.getWindowManager().getDefaultDisplay().getWidth();
        int height = activity.getWindowManager().getDefaultDisplay()
                .getHeight();
        // 去掉标题栏
        // Bitmap b = Bitmap.createBitmap(b1, 0, 25, 320, 455);
        Bitmap b = Bitmap.createBitmap(b1, 0, statusBarHeight, width, height
                - statusBarHeight);
        view.destroyDrawingCache();
        return b;
    }

    // 保存到sdcard
    private static void savePic(Bitmap b, String strFileName) {
        FileOutputStream fos = null;
        try {
//判断是否存在该文件夹和文件，如果没有新建
            File file = new File(strFileName);
            //获取父目录
            File fileParent = file.getParentFile();
            //判断是否存在
            if (!fileParent.exists()) {
//                创建父目录文件
                fileParent.mkdirs();
            }
            file.createNewFile();
            fos = new FileOutputStream(new File(strFileName));
            if (null != fos) {
                b.compress(Bitmap.CompressFormat.PNG, 90, fos);
                fos.flush();
                fos.close();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    //用于获取当前最新的截图
    public static String getPath(){
        return newFilePath;
    }
    // 截屏方法
    public static void shoot(Activity a) {
        Date date = new Date();
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String fileName = df.format(date)+".png";
        String sdCardPath = Environment.getExternalStorageDirectory().getPath();
        String filePath = sdCardPath + File.separator + "xinlv" + File.separator + "Screenshoots"+ File.separator + fileName;
        newFilePath = filePath;
        ScreenShot.savePic(ScreenShot.takeScreenShot(a), filePath);
    }

}

做了一个小Demo实现了本功能，Demo地址https://github.com/18855578562/ScreenShot