用view获取当前layout时，layout中imageview中用Bipmap格式加载的图片无法显示？

[J_ANNA]

用view获取当前layout时，layout中imageview中用Bipmap格式加载的图片无法显示？但imageview是获取到了的，因为改变imageview的背景颜色，view中是有显示的，但为什么里面的图片不显示？
View获取layout代码：
View view = LayoutInflater.from(getActivity()).inflate(R.layout.reportlayout, null, false);
Imageview中加载图片代码：
rimgwaveform.setImageBitmap(bitmapwave);
我开始怀疑是Imageview加载图片的格式bitmap不对，但换成drawable还是不显示。主要是在ImageView中加载本地图片都是要用Bitmap格式，这就让我很困惑了。求各位大神帮忙支支招

[J_ANNA]

public Bitmap convertViewToBitmap(View view){ Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888); //利用bitmap生成画布 Canvas canvas = new Canvas(bitmap); //把view中的内容绘制在画布上 view.draw(canvas); return bitmap; } /**生成bitmap并显示在imageview中**/ private View.OnClickListener btnimageOnClick=new View.OnClickListener() { @Override public void onClick(View v) { demo(); Bitmap bitmapwave=convertViewToBitmap(simpleWaveform); rimgwaveform.setImageBitmap(bitmapwave); } }; public void printutil(String data){ View view= LayoutInflater.from(getActivity()).inflate(R.layout.reportlayout, null,false); printer.shotViewAsImage(rbtnprint, view, true); } //保存图片到本地 private View.OnClickListener btnprintOnClick=new View.OnClickListener() { @Override public void onClick(View v) { String data="第一个保存文件"; // TODO 自动生成的方法存根 printutil(data); } };

[J_ANNA]

public class PrintUtil { private static final String TAG = "PrintUtil"; public String SCREEN_SHOTS_LOCATION = Environment .getExternalStorageDirectory()+ "/AAA/"; //保存到SD卡指定文件夹“AAA”中，若文件夹不存在则自动生成以此命名的文件夹 /** * 对当前view进行截屏，并保存到SCREEN_SHOTS_LOCATION指定的目录下 * @param view * @param name * @return * @throws Exception */ public void takeScreenShot(View view, String name,TakeScreenShotCallBack callback) throws Exception{ takeScreenShot(view,name,SCREEN_SHOTS_LOCATION,callback); } TakeScreenShotCallBack mCallback = new TakeScreenShotCallBack(){ @Override public void excute(File file) { // TODO Auto-generated method stub } }; /** * 把传入的view保存为图片 * @param parent 事件触发视图，可以是button等 * @param view 保存为图片的视图 * @param isShow 是否显示展示视图 * @return */ public void shotViewAsImage(View parent,View view, boolean isShow){ PopupWindow popupWindow = getPopuptWindow(view); if(isShow) popupWindow.showAtLocation(parent, Gravity.CENTER, 0, 0); File newFile = null; try { takeScreenShot(popupWindow.getContentView(),null,mCallback); } catch (Exception e) { Log.e(TAG, e.getMessage()); } } /** * 创建popupWindow * @param popupWindow_view * @return */ protected PopupWindow getPopuptWindow(View popupWindow_view) { PopupWindow popupWindow = null; popupWindow = new PopupWindow(popupWindow_view, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, true);// 创建PopupWindow实例 //popupWindow = new PopupWindow(popupWindow_view, LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, true);// 创建PopupWindow实例 popupWindow.setBackgroundDrawable(new BitmapDrawable()); popupWindow.setFocusable(true); popupWindow.setOutsideTouchable(false); return popupWindow; } public interface TakeScreenShotCallBack{ public void excute(File file); } /** * 对当前view进行截屏，并保存到path指定的目录下 * @param view * @param name * @param path * @return * @throws Exception */ public void takeScreenShot(final View view, final String name,final String path,final TakeScreenShotCallBack callback) throws Exception { final Bitmap bitmap = convertViewToBitmap(view); Runnable runnable = new Runnable() { @Override public void run() { Canvas canvas = new Canvas(bitmap); int w = bitmap.getWidth(); int h = bitmap.getHeight(); Paint paint = new Paint(); paint.setColor(Color.YELLOW); String n = null; if(null == name || "".equals(name)){ SimpleDateFormat simple = new SimpleDateFormat("yyyyMMddhhmmss"); n = simple.format(new Date()); }else{ n = name; } canvas.drawText("", w - w / 2, h - h / 10, paint); canvas.save(); canvas.restore(); FileOutputStream fos = null; File file = null; try { File sddir = new File(path); if (!sddir.exists()) { sddir.mkdirs(); } //生成以时间为名称的文件 file = new File(path + File.separator + n + ".png"); fos = new FileOutputStream(file); if (fos != null) { bitmap.compress(Bitmap.CompressFormat.PNG, 90, fos); fos.close(); } } catch (Exception e) { Log.e(TAG, e.getMessage(),e); } callback.excute(file); } }; Thread thread = new Thread(runnable); thread.start(); } /** * 转换view为bitmap * @param view * @return */ public Bitmap convertViewToBitmap(View view){ //view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(0, MeasureSpec.EXACTLY)); view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight()); view.buildDrawingCache(); Bitmap bitmap = view.getDrawingCache(); return bitmap; } private BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

[kkboy20]

收到了。 谢谢分享.

[J_ANNA]

View priview=LayoutInflater.from(getActivity()).inflate(R.layout.reportlayout,
null,false);
View view= LayoutInflater.from(getActivity()).inflate(R.layout.reportlayout,
(ViewGroup)priview,false);
printer.shotViewAsImage(rbtnprint, view, true);
}


改为当前视图还是不行

[J_ANNA]

大哥，这是之前的代码，并不是解决问题后的代码。

[J_ANNA]

引用 1 楼 jklwan 的回复:

inflate的第二个参数改为当前的视图。而且代码多发点儿呢，现在什么都看不出来

大神，我的问题解决了，我没用View view = LayoutInflater.from(getActivity()).inflate(R.layout.reportlayout, null, false); 这个方法了。 改成直接把当前最顶层的linearout设置成一个View,然后将此View转成Bitmap格式后保存到本地即可。 部分代码： private View linearout; linearout=getView().findViewById(R.id.LinearLayout1); public Bitmap convertViewToBitmap(View view){ Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888); //利用bitmap生成画布 Canvas canvas = new Canvas(bitmap); //把view中的内容绘制在画布上 view.draw(canvas); return bitmap; } private View.OnClickListener btnimageOnClick=new View.OnClickListener() { @Override public void onClick(View v) { demo(); Bitmap bitmapwave=convertViewToBitmap(linearout); // rimgwaveform.setImageBitmap(bitmapwave); String bitName ="保存bitname"; saveMyBitmap(bitName,bitmapwave); } }; public File saveMyBitmap(String bitName,Bitmap mBitmap){ File f = new File("/sdcard/" + bitName + ".webp"); filename="/sdcard/" + bitName + ".webp"; try { f.createNewFile(); } catch (IOException e) { // TODO Auto-generated catch block //DebugMessage.put("在保存图片时出错："+e.toString()); } FileOutputStream fOut = null; try { fOut = new FileOutputStream(f); } catch (FileNotFoundException e) { e.printStackTrace(); } mBitmap.compress(Bitmap.CompressFormat.WEBP, 100, fOut); try { fOut.flush(); } catch (IOException e) { e.printStackTrace(); } try { fOut.close(); } catch (IOException e) { e.printStackTrace(); } return f; } 最后，感谢您的热心帮助！！！

[jklwan]

inflate的第二个参数改为当前的视图。而且代码多发点儿呢，现在什么都看不出来

[qq_29628249]

有没有试过用bitmapfactory 来拿资源

[J_ANNA]

引用 8 楼 qq_29628249 的回复:

有没有试过用bitmapfactory 来拿资源

还没有