使用Firebase构建APK的Android正常工作，但释放APK崩溃

Question

public class Gallery extends AppCompatActivity {
static ArrayList<String> images;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_gallery);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        toolbar.setTitle("Gallery");
        toolbar.setTitleTextColor(ContextCompat.getColor(Gallery.this, R.color.white));
        images = new ArrayList<>();
        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onBackPressed();
            }
        });
        final GridView gridview = (GridView) findViewById(R.id.gridview);
        final ProgressDialog progressDialog = new ProgressDialog(Gallery.this);
        progressDialog.setMessage("Loading data...");
        progressDialog.show();
        ConnectivityManager manager = (ConnectivityManager) getApplicationContext().getSystemService(CONNECTIVITY_SERVICE);
        NetworkInfo info = manager.getActiveNetworkInfo();
        final boolean isconnected = info != null && info.isConnectedOrConnecting();
        Firebase.setAndroidContext(Gallery.this);
        if (Firebase.getDefaultConfig().isPersistenceEnabled() == false)   //check if persistence is enabled or disbled
            Firebase.getDefaultConfig().setPersistenceEnabled(true);
        String URL = "someurl";
        Firebase firebase = new Firebase(URL);
        final ImageAdapter adapter = new ImageAdapter(Gallery.this, images);
        final Firebase imagefolder = firebase.child("imagesfolder");
        imagefolder.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                for (DataSnapshot snapshot : dataSnapshot.getChildren()) {
                    images.add(snapshot.getValue(String.class));
                    adapter.notifyDataSetChanged();
                }
            }
            @Override
            public void onCancelled(FirebaseError firebaseError) {
            }
        });

}}

这是来自Android设备监视器的崩溃报告

java.lang.runtimeException：出了点问题，请向 [e-mail] at android.app.activitythread.performlaunchactivity（activityThread.java:2195） at android.app.activitythread.handlelaunchactivity（activityThread.java:2245） at android.app.activitythread.access $ 800（activityThread.java:135） 在Android.app.Apt.activityThread $ H.Handlemessage（activityThread.java:1196） at android.os.handler.dispatchmessage（Handler.java:102） at android.os.looper.loop（looper.java:136） at android.app.activitythread.main（activityThread.java:5017） 在java.lang.reflect.method.invokenative（method.java） 在java.lang.reflect.method.invoke（method.java:515） 在com.android.internal.os.os.zygoteinit $ methodandargscaller.run（zygoteinit.java:779） 在com.android.internal.os.os.zygoteinit.main（zygoteinit.java:595） 在dalvik.system.nativestart.main（nativestart.java）

Answer 1

通过使用databaseerference类而不是使用firebase

来解决错误

private DatabaseReference mDatabase;
    FirebaseDatabase database = FirebaseDatabase.getInstance();
    mDatabase=database.getReference().child("imagesfolder");
    final ImageAdapter adapter = new ImageAdapter(Gallery.this, images);
     mDatabase.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                for (DataSnapshot snapshot : dataSnapshot.getChildren()) {
                    images.add(snapshot.getValue(String.class));
                    adapter.notifyDataSetChanged();
                }
            }
            @Override
            public void onCancelled(DatabaseError databaseError) {
            }
        });