我的可绘制文件夹中有超过1000个图像,我需要将所有这些图像加载到数组列表中,以便稍后在程序运行时进行搜索。在android中是否有任何可能的方法可以动态加载ArrayList中的所有图像?
谢谢
这段代码由我工作和测试,您可以从drawable获取所有图像并将其保存在ArrayList中。
但在我看来,这是一个非常糟糕的主意
码:
ArrayList<Integer> arrayOfIcons = new ArrayList<>();
Field[] drawables = R.drawable.class.getFields();
for (Field f : drawables) {
try {
int resID = getResources().getIdentifier(f.getName() , "drawable", getPackageName());
arrayOfIcons.add(resID);
} catch (Exception e) {
e.printStackTrace();
}
}
ImageView imageView = findViewById(R.id.imageView);
imageView.setImageResource(arrayOfIcons.get(0));
我希望它对你有所帮助。
import java.lang.reflect.Field;
Field[] ID_Fields = R.drawable.class.getFields();
int[] resArray = new int[ID_Fields.length];
for(int i = 0; i < ID_Fields.length; i++) {
try {
resArray[i] = ID_Fields[i].getInt(null);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
这是最终的工作代码:
ImageView imageView = findViewById(R.id.testImage);
//load all the icon names from drawable
ArrayList<String> arrayOfIcons = new ArrayList<>();
//load the array containing specific characters
containingArray = new ArrayList<>();
Field[] drawables = R.drawable.class.getFields();
for (Field f : drawables) {
try {
int resID = getResources().getIdentifier(f.getName() , "drawable", getPackageName());
arrayOfIcons.add(f.getName());
} catch (Exception e) {
e.printStackTrace();
}
}
//search for all similar keywords
for(int i =0; i < arrayOfIcons.size();i++){
if(arrayOfIcons.get(i).contains(title_string) && arrayOfIcons.get(i).contains("_")){
containingArray.add(arrayOfIcons.get(i));
}
}
//split array
for(int i = 0; i < containingArray.size();i++){
//finding the index that contains the keyword
if(containingArray.get(i).substring(0,containingArray.get(i).lastIndexOf("_")).equalsIgnoreCase(title_string)){
Context context = imageView.getContext();
int id = context.getResources().getIdentifier(containingArray.get(i), "drawable", context.getPackageName());
imageView.setImageResource(id);
}
System.out.println("ContainingArray: "+containingArray.get(i));
}