Android的 - 如何采取截图编程 [英] Android - How to take screenshot programatically

问题描述

大家好。我需要的Andr​​oid设备或模拟器截图编程时，我的应用程序安装，并在后台，每200毫秒运行，并且将图像保存在我的电脑。我已经实现用低于code这个过程，仅当我的应用前景。我想采取截图的时候我的应用程序在后台为好。下面是我的code：

Hello Everyone. I need to screenshots of Android device or emulator programatically when my application is installed and running in the background for every 200 milliseconds and save the images in my computer. I have implemented this procedure using below code and works only when my application is in foreground. I want to take screenshots when my application is in background as well. Below is my code:

public static Bitmap takeScreenshot(Activity activity, int ResourceID) { 
    Random r = new Random();
    int iterator=r.nextInt();   
     String mPath = Environment.getExternalStorageDirectory().toString() + "/screenshots/";
    View v1 = activity.getWindow().getDecorView().findViewById(ResourceID);
    v1.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 
            MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
    v1.layout(0, 0, v1.getMeasuredWidth(), v1.getMeasuredHeight()); 
    v1.setDrawingCacheEnabled(true);
    final Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
    Bitmap resultBitmap = Bitmap.createScaledBitmap(bitmap, 640, 480, false);
    v1.setDrawingCacheEnabled(false);
    File imageFile = new File(mPath);
    imageFile.mkdirs();
    imageFile = new File(imageFile+"/"+iterator+"_screenshot.png");
    try {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        resultBitmap.compress(CompressFormat.PNG, 100, bos);
        byte[] bitmapdata = bos.toByteArray();

        //write the bytes in file
        FileOutputStream fos = new FileOutputStream(imageFile);
        fos.write(bitmapdata);
        fos.flush();
        fos.close();    
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return bitmap;
    }  

我怎样才能实现的抓屏的刷新和保存按钮功能的设备 - ＆GT; DDMS 编程？我可以acheive吗？请帮我用你的思想/样品$​​ C $ CS

How can i implement the functionality of Refresh and Save buttons of Screencapture in Devices -> DDMS programatically? Can I acheive that? Please help me with your thoughts/ sample codes

推荐答案

如果你的手机是植根试试这个

If your phone is rooted try this

Process sh = Runtime.getRuntime().exec("su", null,null);

                    OutputStream  os = sh.getOutputStream();
                    os.write(("/system/bin/screencap -p " + "/sdcard/img.png").getBytes("ASCII"));
                    os.flush();

                    os.close();
                    sh.waitFor();

然后读img.png为位图和JPG转换如下：

then read img.png as bitmap and convert it jpg as follows

Bitmap screen = BitmapFactory.decodeFile(Environment.getExternalStorageDirectory()+         
File.separator +"img.png");

//my code for saving
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    screen.compress(Bitmap.CompressFormat.JPEG, 15, bytes);

//you can create a new file name "test.jpg" in sdcard folder.

File f = new File(Environment.getExternalStorageDirectory()+ File.separator + "test.jpg");
            f.createNewFile();
//write the bytes in file
    FileOutputStream fo = new FileOutputStream(f);
    fo.write(bytes.toByteArray());
// remember close de FileOutput

    fo.close();

您在屏幕上不能访问，如果你的应用程序在后台，除非你是根深蒂固，在code以上才能最有效的任何屏幕，即使你是在后台拿的屏幕截图。

you have no access to the screen if your application is in background unless you are rooted, the code above can take the screenshot most effectively of any screen even if you are in background.

更新

谷歌有一个库，你可以采取截图不生根，我试过了，但IAM肯定会尽快在外面吃饭的记忆。

Google has a library with which you can take screenshot without rooting, I tried that, But iam sure that it will eat out the memory as soon as possible.

尝试<一href="http://$c$c.google.com/p/android-screenshot-library/">http://$c$c.google.com/p/android-screenshot-library/

这篇关于Android的 - 如何采取截图编程的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！