机器人：以一个ScreenShoot在滚动型的所有视图 [英] Android: Taking a ScreenShoot for all view in ScrollView

问题描述

我尝试采取ScreenShoot所有视图滚动型，我的滚动型都有溅出的内容屏幕（因此滚动成为可能），我怎么能保证屏幕截图包括不可见的屏幕上？

I try to take a ScreenShoot for all view in ScrollView, my ScrollView has content that spills out of the screen (hence scrolling made possible), how can I ensure that the screenshot includes the elements that are not visible on the screen?

我一直用这个code：

I have been using this code :

scroll_pp=(ScrollView)polis.findViewById(R.id.scroll_pp);
int totalHeight = scroll_pp.getChildAt(0).getHeight();
int totalWidth = scroll_pp.getChildAt(0).getWidth();
 Bitmap b= MethodSupport.loadBitmapFromView(scroll_pp, totalWidth, totalHeight);
String extr = Environment.getExternalStorageDirectory().toString() +   File.separator + "Folder";
                    String fileName = "Test.jpg";
                    File myPath = new File(extr, fileName);
                    FileOutputStream fos = null;
                    try {
                        fos = new FileOutputStream(myPath);
                        b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
                        fos.flush();
                        fos.close();
                        MediaStore.Images.Media.insertImage(getActivity().getContentResolver(), b, "Screen", "screen");
                    }catch (FileNotFoundException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    } catch (Exception e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }

public static Bitmap loadBitmapFromView(View v, int width, int height) {
        Bitmap b = Bitmap.createBitmap(width , height, Bitmap.Config.ARGB_8888);                
        Canvas c = new Canvas(b);
        v.layout(0, 0, v.getLayoutParams().width, v.getLayoutParams().height);
        v.draw(c);
        return b;
    }

图片文件创建，但只显示黑屏，而不是我想要的看法，所以是不是有什么毛病我code？是否有任何人能帮助我，好吗？

The Image file created, but it only display the black screen, not the view as I wanted, so Is there something wrong with my code? Is there anyone can help me, please?

更新

请@ 113408的回答后，我得到了错误，这是我的的logcat ：

After follow @113408 's Answer, I got Error, this is my logcat :

 08-27 10:40:57.555: E/AndroidRuntime(4957): FATAL EXCEPTION: main
08-27 10:40:57.555: E/AndroidRuntime(4957): java.lang.NullPointerException
08-27 10:40:57.555: E/AndroidRuntime(4957):     at android.graphics.Bitmap.createBitmap(Bitmap.java:484)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at id.co.ajsmsig.espaj.PemegangPolis.onClick(PemegangPolis.java:1546)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at android.view.View.performClick(View.java:4222)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at android.view.View$PerformClick.run(View.java:17337)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at android.os.Handler.handleCallback(Handler.java:615)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at android.os.Handler.dispatchMessage(Handler.java:92)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at android.os.Looper.loop(Looper.java:137)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at android.app.ActivityThread.main(ActivityThread.java:4895)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at java.lang.reflect.Method.invokeNative(Native Method)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at java.lang.reflect.Method.invoke(Method.java:511)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)
08-27 10:40:57.555: E/AndroidRuntime(4957):     at dalvik.system.NativeStart.main(Native Method)

有关注意事项：十月8号至27号：40：57.555：E / AndroidRuntime（4957）：在id.co.ajsmsig.espaj.PemegangPolis.onClick（PemegangPolis.java:1546） 是指位图B = Bitmap.createBitmap（u.getDrawingCache（））;

for note : 08-27 10:40:57.555: E/AndroidRuntime(4957): at id.co.ajsmsig.espaj.PemegangPolis.onClick(PemegangPolis.java:1546) is refer to Bitmap b = Bitmap.createBitmap(u.getDrawingCache());

推荐答案

您可以使用此code采取完整的滚动型相同的$ C截图$ C可适应所有类型的查看取值

You can use this code to take a screenshot of your full ScrollView the same code can be adapted to all kind of Views

code：

        View u = findViewById(R.id.scroll_pp);
        u.setDrawingCacheEnabled(true);                                                
        ScrollView scroll_pp = (ScrollView) findViewById(R.id.scroll_pp);
        int totalHeight = scroll_pp.getChildAt(0).getHeight();
        int totalWidth = scroll_pp.getChildAt(0).getWidth();
        u.layout(0, 0, totalWidth, totalHeight);    
        u.buildDrawingCache(true);
        Bitmap b = Bitmap.createBitmap(u.getDrawingCache());             
        u.setDrawingCacheEnabled(false);

        //Save bitmap
        String extr = Environment.getExternalStorageDirectory().toString() +   File.separator + "Folder";
        String fileName = "Test.jpg";
        File myPath = new File(extr, fileName);
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(myPath);
            b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
            fos.flush();
            fos.close();
            MediaStore.Images.Media.insertImage(getContentResolver(), b, "Screen", "screen");
        }catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 

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