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