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
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