java - 自定义标记位图错误 无法解码图像。提供的图像必须是位图

Question

我正在使用 firebase 实时数据库来获取一些用户信息并为每个用户显示一个自定义标记。为了设置标记选项的图标，我使用下面的方法，它适用于大多数情况。

但更常见的是，当为标记创建自定义 View 的位图时，应用程序会崩溃......!有没有办法改进方法并防止位图问题。!

代码

  { // other methods.. 

    private void showMarker() {

    BitmapDescriptor pin = BitmapDescriptorFactory
        .fromBitmap(getMarkerBitmapFromView(data.getUserAvatar()));
        userMarker = googleMap.addMarker(new MarkerOptions()
            .position(latLng)
            .title(data.getName() + "")
            .snippet(data.getSectionName() + "")
            .icon(pin));
      }

       // I take pic url from firebase and show it into the marker view
      private Bitmap getMarkerBitmapFromView(String ImgUrl) {
        if (getActivity() != null) {

          View customMarkerView = ((LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.map_marker, null);
          CircleImageView markerImageView = customMarkerView.findViewById(R.id.pic_user);
          FrameLayout pin = customMarkerView.findViewById(R.id.marker);
          pin.setBackground(ContextCompat.getDrawable(getActivity(), R.drawable.map_marker_green));

           Picasso.with(getActivity())
             .load(ImgUrl)
             .resize(80, 80)
             .error(R.drawable.user_dummy)
             .placeholder(R.drawable.user_dummy)
             .into(markerImageView);

          customMarkerView.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
          customMarkerView.layout(0, 0, customMarkerView.getMeasuredWidth(), customMarkerView.getMeasuredHeight());
          customMarkerView.buildDrawingCache(true);

          Bitmap returnedBitmap = Bitmap.createBitmap(customMarkerView.getMeasuredWidth(), customMarkerView.getMeasuredHeight(), Config.ARGB_8888);

          Canvas canvas = new Canvas(returnedBitmap);
          canvas.drawColor(Color.WHITE, Mode.SRC_IN);
          Drawable drawable = customMarkerView.getBackground();
          if (drawable != null) {
            drawable.draw(canvas);
          }
          customMarkerView.draw(canvas);
          return returnedBitmap;
        } else {
         // the crash didn't happen because of this! I've checked using breakpoints, it returns bitmap 99.9% of times.
          return null; 
        }
      }

    }

错误

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.arapeak.katateeb, PID: 30706
    com.google.maps.api.android.lib6.common.apiexception.b: Failed to decode image. The provided image must be a Bitmap.
    at com.google.maps.api.android.lib6.impl.k.a(:com.google.android.gms.dynamite_dynamitemodulesb@12529020@12.5.29 (040308-192802242):5)
   at com.google.maps.api.android.lib6.impl.o.a(:com.google.android.gms.dynamite_dynamitemodulesb@12529020@12.5.29 (040308-192802242):7)
   at com.google.maps.api.android.lib6.impl.db.<init>(:com.google.android.gms.dynamite_dynamitemodulesb@12529020@12.5.29 (040308-192802242):25)
   at com.google.maps.api.android.lib6.impl.bc.a(:com.google.android.gms.dynamite_dynamitemodulesb@12529020@12.5.29 (040308-192802242):496)
   at com.google.android.gms.maps.internal.l.onTransact(:com.google.android.gms.dynamite_dynamitemodulesb@12529020@12.5.29 (040308-192802242):94)
   at android.os.Binder.transact(Binder.java:387)
   at com.google.android.gms.internal.zzeu.zza(Unknown Source)
   at com.google.android.gms.maps.internal.zzg.addMarker(Unknown Source)
   at com.google.android.gms.maps.GoogleMap.addMarker(Unknown Source)

Answer 1

嗨，我已经这样使用过，它对我来说效果很好

//generate bit map from view
private Bitmap createBitMap(View v) {
    Bitmap b = Bitmap.createBitmap(v.getMeasuredWidth(), v.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
    if (b != null) {
        Canvas c = new Canvas(b);
        v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
        v.draw(c);
    }
    return b;
}

// created user marker with his image
private void addMyLocationMarker() {

View view = DataBindingUtil.inflate(getActivity().getLayoutInflater(), R.layout.layout_marker, null, false);
view.setLayoutParams(new ViewGroup.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT));
view.measure(View.MeasureSpec.makeMeasureSpec(view.getWidth(), View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight()); 
    if (userMarker != null)
        userMarker = googleMap
                .addMarker(new MarkerOptions()
                        .anchor(0.5F, 0.5F)
                        .position(latlng)
                        .icon(BitmapDescriptorFactory.fromBitmap(createBitMap(bindingUserMarker.getRoot()))));
        userMarker.setZIndex(2f);
        updateUserMarkerImage(view);
    }
}

//update user image
private void updateUserMarkerImage(View view ) {
   ImageView imageView=view.findViewById(R.id.image);
    //load your image using any image loader and recreate marker with your view and set it marker
}