判断资源存在与否如判断一个drawable的图片存在及经过id加载图片

int i=  getResources().getIdentifier("icon", "drawable", getPackageName()) ;       if(i>0)       {Log.i("aa","aa");}       else       {Log.i("vbv","aa");}java   或者android  int resID = getResources().g

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