I want to convert Drawable into int and then vice versa.Basically I want to save Arraylist object into sharedPrefrence. For that purpose I have Implement Gson to Srtring convertion Method. If I use here Drawable instead of int then Gson String convertion take alot of time. so I want to use int instead of Drawable.
private List<AppInfo> apps = null;
public void setIcon(int icon) {
this.icon = icon;
}
apps.get(position).setIcon(mContext.getResources().getDrawable(apps.get(position).getIcon()));
Where AppInfo here is
public AppInfo(String appname, String pname, String versionName, int versionCode, int icon, int color) {
this.appname = appname;
this.pname = pname;
this.versionName = versionName;
this.versionCode = versionCode;
this.icon = icon;
this.color = color;
}
Here is source of Converting ArrayList of Custom object into String so that i can save it to SharedPrefrence.
Gson gson = new Gson();
apps.get(number).setColor(picker.getColor());
String JsonAppsdata = gson.toJson(apps);
System.out.println("Storing="+JsonAppsdata);
utility.StoreData(getApplicationContext(), JsonAppsdata);
This is how we can fetch app icon and set it for an imageview.
applicationInfo=mContext.getPackageManager().getApplicationInfo(apps.get(position).getPname(),PackageManager.GET_META_DATA);
int icon= applicationInfo.icon;
Rsources resources=mContext.getPackageManager().getResourcesForApplication(applicationInfo);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
holder.itemIcon.setImageDrawable(resources.getDrawable(icon,null));
}else
{
holder.itemIcon.setImageDrawable(resources.getDrawable(icon));
}
Int -> Drawable:
Drawable icon = getResources().getDrawable(42, getTheme());
Drawable -> Int:
(I assume, that you're populating List<AppInfo> apps
with app's whose icons are already in res/drawable
folder of your app)
Once you set your R.drawable.app1
to ImageView
, you can also give it a tag
to identify the resource in the ImageView
later:
ImageView appIcon1ImageView = (ImageView)findViewById(R.id.app_icon_1);
appIcon1ImageView.setImageDrawable(getDrawable(R.drawable.app1));
appIcon1ImageView.setTag(R.drawable.app1);
......
// Once you need to identify which resource is in ImageView
int drawableId = Integer.parseInt(appIcon1ImageView.getTag().toString());
If your icons are coming from server - the only way is to store them to disk and then re-load them. (or, better, rely on the already existing image-caching solutions like picasso)
UPD:
There's no direct way of converting Drawable
into int
, but in this particular case, it's possible to get the int
, instead of Drawable
from PackageManager
:
ApplicationInfo applicationInfo = mContext.getPackageManager().getApplicationInfo(apps.get(position).getPname(),1);
int icon= applicationInfo.icon;
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