Proguard obfuscation crashes app in getView

Question

Spent several hours and was unable to prevent the app crashing after obfuscation. Also searched around to no avail. If someone could give me a hint in the right direction I'd appreciate it. The crash starts where getView get (Unknown Source)

E/AndroidRuntime: FATAL EXCEPTION: main
E/AndroidRuntime: android.content.res.Resources$NotFoundException: Resource ID #0x0
E/AndroidRuntime:     at android.content.res.Resources.getValue(Resources.java:1019)
E/AndroidRuntime:     at android.content.res.Resources.getDrawable(Resources.java:663)
E/AndroidRuntime:     at a.getDrawable(Unknown Source)
E/AndroidRuntime:     at android.support.v7.internal.widget.TintManager.getDrawable(Unknown Source)
E/AndroidRuntime:     at android.support.v7.internal.widget.TintManager.getDrawable(Unknown Source)
E/AndroidRuntime:     at android.support.v7.widget.AppCompatImageHelper.setImageResource(Unknown Source)
E/AndroidRuntime:     at android.support.v7.widget.AppCompatImageView.setImageResource(Unknown Source)
E/AndroidRuntime:     at roncada.skyweather.DropZoneAdapter.getView(Unknown Source)
E/AndroidRuntime:     at android.widget.AbsListView.obtainView(AbsListView.java:2222)
E/AndroidRuntime:     at android.widget.ListView.makeAndAddView(ListView.java:1774)

The code where it starts:

    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);

        DropZoneAdapter adapter = new DropZoneAdapter(getActivity(), DZS);
        getListView().setAdapter(adapter);

    } //end postexecute

then in the adapter:

class DropZoneAdapter extends ArrayAdapter {

public DropZoneAdapter(Context context, ArrayList<DropZoneFragment.DZ_Row> sites) {
    super(context, R.layout.row_layout, sites);
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    // Get the data item for this position

and it breaks in the convertView.

Here's my proguard rules:

-dontpreverify
-repackageclasses ''
-allowaccessmodification
-optimizations !code/simplification/arithmetic
#-keepattributes *Annotation*
-keep class android.support.v4.internal.** { *; }
-keep interface android.support.v4.internal.** { *; }
-keep class android.support.v4.app.** { *; }
-keep interface android.support.v4.app.** { *; }
-keep class android.support.v7.widget.** { *; }
-keep interface android.support.v7.widget.** { *; }
-keep class android.support.v7.internal.** { *; }
-keep interface android.support.v7.internal.** { *; }
-keep public class * extends android.app.Activity
#-keep public class * extends android.support.v7.app.AppCompatActivity;
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-dontwarn android.support.**
-dontwarn com.google.common.**
-dontwarn org.apache.http.**
-dontwarn android.net.http.AndroidHttpClient
-dontwarn com.google.android.gms.**

Would appreciate any help. Thanks.

Answer 1

您可能应该保护Fragment免于混淆。

-keep public class * extends android.app.Fragment

Answer 2

Try this to keep resource ID:

# Keep resource files ID
-keepclassmembers class **.R$* {
    public static <fields>;
}