Question

我收到来自API的图片链接，例如： “http://host/skin/images/answer_picture/image_1.png”

但是我想直接从应用程序中使用这些图像，因为许多用户在加载图像时遇到了问题。

所以我将图片添加到应用程序中，然后更改API以仅获取图像名称“image_1.png”。

旧代码是：

            View txtOption;

            if (AppConstant.arQuestionList.get(questionid).getArAnswer().get(i).getAtype()
                    .equalsIgnoreCase("image")) {
                txtOption = new ImageView(this);

                try {

                        Glide.with(QuestionActivity.this).load(AppConstant.arQuestionList.get(questionid)
                            .getArAnswer().get(i).getAnswer()).override(60, 60).into((ImageView)
                            txtOption); 

                }catch (OutOfMemoryError e){
                    e.printStackTrace();
                }
                txtOption.setPadding(5, 5, 5, 5);

            } else {
                txtOption = new TextView(this);

                ((TextView) txtOption).setText(AppConstant.arQuestionList.get(questionid)
                        .getArAnswer().get
                                (i).getAnswer());
                ((TextView) txtOption).setTextColor(getResources().getColor(R.color.answer_color));
                ((TextView) txtOption).setTypeface(tf, Typeface.BOLD);
                ((TextView) txtOption).setGravity(Gravity.CENTER);
                txtOption.setPadding(10, 20, 10, 20);
            }

新代码（不工作）：

                    // get the img name example: Skill_test.png
                    String imgName = AppConstant.arQuestionList.get(questionid)
                            .getArAnswer().get(i).getAnswer();

                    // delete image name extension 
                    if (imgName.endsWith(".png")) {
                        imgName = imgName.substring(0, imgName.length() - 5);
                    }

                    String uri = "drawable/"+imgName;


                   int idDrawable = getResources().getIdentifier(uri,"drawable", getPackageName());

                    Drawable drawable = ContextCompat.getDrawable(QuestionActivity.this, idDrawable);

                    Glide.with(QuestionActivity.this)
                            .load("")
                            .placeholder(drawable)
                            .into((ImageView)txtOption);

Answer 1

只需使用：

int idDrawable = getResources().getIdentifier(imgName, "drawable", getPackageName());

Drawable drawable = ContextCompat.getDrawable(context, idDrawable);

Glide.with(context)
         .load("")
         .placeholder(drawable)
         .into(imageView);

Answer 2

最后我弄清楚错误是什么

                    // get the img name, example: Skill_Hero_Skill-Name.png
                    String imgName = AppConstant.arQuestionList.get(questionid)
                            .getArAnswer().get(i).getAnswer();

                    // delete image name extension
                    if (imgName.endsWith(".png")) {
                        imgName = imgName.substring(0, imgName.length() - 4);
                    }

                    // string to lowercase
                    imgName = imgName.toLowerCase();

                    // replace "-" for "_"
                    imgName = imgName.replace('-','_');


                    String uri = "drawable/"+imgName.toLowerCase();

                    int imageResource  = getResources().getIdentifier(uri,"drawable", getPackageName());


                    Glide.with(QuestionActivity.this)
                            .load(imageResource)
                            .crossFade()
                            .override(60, 60)
                            .into((ImageView)txtOption);

使用gilde使用存储在应用程序中的可绘制图像

2 个答案: