Question

我从服务器获取base 64编码格式的图像字符串：,。所以我下载并使用该图像字符串将其转换为位图。

现在我唯一的问题是，我必须在for循环中调用loadImage（base64Image）方法近八次。但是由于异步排序它没有单次调用方法，它直接进入volley get响应。 / p>

因此我无法将值保存到arraylist。这就是我得到arrayIndexOutOfBoundException的原因。

下面我发布了与此问题相关的logcat和代码：

Logcat：（已编辑）

hNiCHLy9Ax3gKMv81IBJ1457175735

CardFragment.java：

03-22 08:39:43.795 30971-30971/com.android.burblr E/urlAva: http://example.com/api/v1/file=3UulRIaeyVTpKYfkA5og1458204300
03-22 08:39:43.795 30971-30971/com.android.burblr E/base64Image: 3UulRIaeyVTpKYfkA5og1458204300
03-22 08:39:43.795 30971-30971/com.android.burblr E/Calling BitMAp....: 3UulRIaeyVTpKYfkA5og1458204300
03-22 08:39:43.795 30971-30971/com.android.burblr E/Calling try: Calling try
03-22 08:39:43.795 30971-30971/com.android.burblr E/getAvaArrStr: cUZdHWN9KzYMtmusvqnE1446770662
03-22 08:39:43.795 30971-30971/com.android.burblr E/urlAva: http://example.com/api/v1/file=cUZdHWN9KzYMtmusvqnE1446770662
03-22 08:39:43.795 30971-30971/com.android.burblr E/base64Image: cUZdHWN9KzYMtmusvqnE1446770662
03-22 08:39:43.795 30971-30971/com.android.burblr E/Calling BitMAp....: cUZdHWN9KzYMtmusvqnE1446770662
03-22 08:39:43.795 30971-30971/com.android.burblr E/Calling try: Calling try
03-22 08:39:43.805 30971-30971/com.android.burblr D/Volley: [1] DiskBasedCache.remove: Could not delete cache entry for key=http://example.com/api/v1/file=cUZdHWN9KzYMtmusvqnE1446770662, filename=993968043-2098536571
03-22 08:39:43.827 30971-31011/com.android.burblr W/EGL_emulation: eglSurfaceAttrib not implemented
03-22 08:39:43.827 30971-31011/com.android.burblr W/OpenGLRenderer: Failed to set EGL_SWAP_BEHAVIOR on surface 0xe195f3c0, error=EGL_SUCCESS
03-22 08:39:44.088 30971-30971/com.android.burblr E/came: came
03-22 08:39:44.088 30971-30971/com.android.burblr E/arrBitMap: []

我需要在调用void hitImageApi(){ final ProgressDialog dialog = ProgressDialog.show(getActivity(), null, null); ProgressBar spinner = new android.widget.ProgressBar( getActivity(),null,android.R.attr.progressBarStyle); spinner.getIndeterminateDrawable().setColorFilter(Color.parseColor("#009689"), android.graphics.PorterDuff.Mode.SRC_IN); dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT)); dialog.setContentView(spinner); dialog.setCancelable(false); dialog.show(); for (int i=0; i < alAvaArr.size(); i++){ getAvaArrStr = alAvaArr.get(i); Log.e("getAvaArrStr",""+getAvaArrStr); urlAva = BurblrUtils.BR_AVATAR_IMAGE + "file=" +getAvaArrStr ; Log.e("urlAva", urlAva); base64Image = getAvaArrStr; Log.e("base64Image", "" + base64Image); loadImage(base64Image); requestAva = new StringRequest(Request.Method.GET, urlAva, new Response.Listener<String>() { @Override public void onResponse(String response) { if(response != null && !response.startsWith("<HTML>")){ Log.e("ResponseAvatar", response); dialog.dismiss(); try { Toast.makeText(getActivity(), "Running ", Toast.LENGTH_SHORT).show(); getSwipeImage(); myAppAdapter.notifyDataSetChanged(); } catch (Exception e) { e.printStackTrace(); dialog.dismiss(); } }else{ dialog.dismiss(); } } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { if(error != null){ Log.e("error", error.toString()); dialog.dismiss(); } } }){ @Override protected Map<String,String> getParams(){ Map<String,String> params = new HashMap<String, String>(); params.put("file", getAvaArrStr ); Log.e("paramsImg", ""+params); return params; } @Override public Map<String, String> getHeaders() throws AuthFailureError { Map<String,String> params = new HashMap<String, String>(); params.put("Content-Type","application/x-www-form-urlencoded"); return params; } }; } RequestQueue queue = Volley.newRequestQueue(getActivity()); queue.add(requestAva); queue.getCache().remove(urlAva); } void loadImage(String src) { Log.e("Calling BitMAp....", "" + src); try { Log.e("Calling try", "Calling try"); URL url = new URL(src); Log.e("url", ""+url); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setDoInput(true); connection.connect(); InputStream input = connection.getInputStream(); Bitmap myBitmap = BitmapFactory.decodeStream(input); Log.e("myBitmap", ""+myBitmap); bitMapToString(myBitmap); } catch (IOException e) { // Log exception Log.e("IOError", ""+e); } } public String bitMapToString(Bitmap bitmap){ ByteArrayOutputStream baos=new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG,100, baos); byte [] b=baos.toByteArray(); String temp=Base64.encodeToString(b, Base64.DEFAULT); Log.e("temp", ""+temp); arrBitMap.add(temp); return temp; }方法八次后调用volley GET响应。任何建议

Answer 1

所以基本上你想避免你在onResponse上做的所有工作，直到加载图像被调用的次数等于alAvaArr数组的大小。因此，您可以向上声明一个全局int变量，并在onResponse中每次增加它。现在检查响应该变量的值是否等于alAvaArr数组的大小。如果没有，那么无论你在OnResponse中做什么都不做其他事情：

                    dialog.dismiss();

                    try {

                        Toast.makeText(getActivity(), "Running ", Toast.LENGTH_SHORT).show();

                        getSwipeImage();

                        myAppAdapter.notifyDataSetChanged();

                    } catch (Exception e) {
                        e.printStackTrace();
                        dialog.dismiss();
                    }

在从凌空得到回应之前多次调用一个方法

1 个答案: