Fixes a crash during authentication and another when opening the composer options. Also, sets up the next update to reset the redirect URI for the app during authorization.

app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java

@@ -93,7 +93,7 @@ import okhttp3.RequestBody;
 import retrofit2.Call;
 import retrofit2.Callback;
 
-public class ComposeActivity extends BaseActivity {
+public class  ComposeActivity extends BaseActivity implements ComposeOptionsFragment.Listener {
     private static final String TAG = "ComposeActivity"; // logging tag
     private static final int STATUS_CHARACTER_LIMIT = 500;
     private static final int STATUS_MEDIA_SIZE_LIMIT = 4000000; // 4MB
@@ -525,27 +525,16 @@ public class ComposeActivity extends BaseActivity {
 
     private void showComposeOptions() {
         ComposeOptionsFragment fragment = ComposeOptionsFragment.newInstance(
-                statusVisibility, statusHideText, inReplyToId != null,
+                statusVisibility, statusHideText, inReplyToId != null);
-                new ComposeOptionsFragment.Listener() {
+        fragment.show(getSupportFragmentManager(), null);
-                    @Override
+    }
-                    public int describeContents() {
-                        return 0;
-                    }
-
-                    @Override
-                    public void writeToParcel(Parcel dest, int flags) {}
 
-                    @Override
+    public void onVisibilityChanged(String visibility) {
-                    public void onVisibilityChanged(String visibility) {
+        setStatusVisibility(visibility);
-                        setStatusVisibility(visibility);
+    }
-                    }
 
-                    @Override
+    public void onContentWarningChanged(boolean hideText) {
-                    public void onContentWarningChanged(boolean hideText) {
+        showContentWarning(hideText);
-                        showContentWarning(hideText);
-                    }
-                });
-        fragment.show(getSupportFragmentManager(), null);
     }
 
     private void sendStatus() {

app/src/main/java/com/keylesspalace/tusky/ComposeOptionsFragment.java

@@ -1,5 +1,6 @@
 package com.keylesspalace.tusky;
 
+import android.content.Context;
 import android.os.Bundle;
 import android.os.Parcelable;
 import android.support.annotation.Nullable;
@@ -12,19 +13,22 @@ import android.widget.CompoundButton;
 import android.widget.RadioButton;
 import android.widget.RadioGroup;
 
+import java.util.List;
+
 public class ComposeOptionsFragment extends BottomSheetDialogFragment {
-    public interface Listener extends Parcelable {
+    interface Listener {
         void onVisibilityChanged(String visibility);
         void onContentWarningChanged(boolean hideText);
     }
 
+    private RadioGroup radio;
+    private CheckBox hideText;
     private Listener listener;
 
-    public static ComposeOptionsFragment newInstance(String visibility,
+    public static ComposeOptionsFragment newInstance(String visibility, boolean hideText,
-            boolean hideText, boolean isReply, Listener listener) {
+            boolean isReply) {
         Bundle arguments = new Bundle();
         ComposeOptionsFragment fragment = new ComposeOptionsFragment();
-        arguments.putParcelable("listener", listener);
         arguments.putString("visibility", visibility);
         arguments.putBoolean("hideText", hideText);
         arguments.putBoolean("isReply", isReply);
@@ -32,6 +36,12 @@ public class ComposeOptionsFragment extends BottomSheetDialogFragment {
         return fragment;
     }
 
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        listener = (Listener) context;
+    }
+
     @Nullable
     @Override
     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
@@ -39,12 +49,11 @@ public class ComposeOptionsFragment extends BottomSheetDialogFragment {
         View rootView = inflater.inflate(R.layout.fragment_compose_options, container, false);
 
         Bundle arguments = getArguments();
-        listener = arguments.getParcelable("listener");
         String statusVisibility = arguments.getString("visibility");
         boolean statusHideText = arguments.getBoolean("hideText");
         boolean isReply = arguments.getBoolean("isReply");
 
-        RadioGroup radio = (RadioGroup) rootView.findViewById(R.id.radio_visibility);
+        radio = (RadioGroup) rootView.findViewById(R.id.radio_visibility);
         int radioCheckedId;
         if (!isReply) {
             radioCheckedId = R.id.radio_public;
@@ -59,6 +68,21 @@ public class ComposeOptionsFragment extends BottomSheetDialogFragment {
             }
         }
         radio.check(radioCheckedId);
+
+        if (isReply) {
+            RadioButton publicButton = (RadioButton) rootView.findViewById(R.id.radio_public);
+            publicButton.setEnabled(false);
+        }
+
+        hideText = (CheckBox) rootView.findViewById(R.id.compose_hide_text);
+        hideText.setChecked(statusHideText);
+
+        return rootView;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
         radio.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(RadioGroup group, int checkedId) {
@@ -81,20 +105,11 @@ public class ComposeOptionsFragment extends BottomSheetDialogFragment {
                 listener.onVisibilityChanged(visibility);
             }
         });
-        if (isReply) {
-            RadioButton publicButton = (RadioButton) rootView.findViewById(R.id.radio_public);
-            publicButton.setEnabled(false);
-        }
-
-        CheckBox hideText = (CheckBox) rootView.findViewById(R.id.compose_hide_text);
-        hideText.setChecked(statusHideText);
         hideText.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                 listener.onContentWarningChanged(isChecked);
             }
         });
-
-        return rootView;
     }
 }

app/src/main/java/com/keylesspalace/tusky/LoginActivity.java

@@ -20,6 +20,7 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
@@ -33,8 +34,6 @@ import android.widget.TextView;
 import com.keylesspalace.tusky.entity.AccessToken;
 import com.keylesspalace.tusky.entity.AppCredentials;
 
-import java.io.UnsupportedEncodingException;
-import java.net.URLEncoder;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -60,14 +59,6 @@ public class LoginActivity extends AppCompatActivity {
     @BindView(R.id.button_login) Button button;
     @BindView(R.id.whats_an_instance) TextView whatsAnInstance;
 
-    private static String urlEncode(String string) {
-        try {
-            return URLEncoder.encode(string, "UTF-8");
-        } catch (UnsupportedEncodingException e) {
-            throw new IllegalArgumentException("Failed to encode the string.", e);
-        }
-    }
-
     /**
      * Chain together the key-value pairs into a query string, for either appending to a URL or
      * as the content of an HTTP request.
@@ -77,9 +68,9 @@ public class LoginActivity extends AppCompatActivity {
         String between = "";
         for (Map.Entry<String, String> entry : parameters.entrySet()) {
             s.append(between);
-            s.append(urlEncode(entry.getKey()));
+            s.append(Uri.encode(entry.getKey()));
             s.append("=");
-            s.append(urlEncode(entry.getValue()));
+            s.append(Uri.encode(entry.getValue()));
             between = "&";
         }
         return s.toString();
@@ -98,7 +89,7 @@ public class LoginActivity extends AppCompatActivity {
         return scheme + "://" + host + "/";
     }
 
-    private void redirectUserToAuthorizeAndLogin() {
+    private void redirectUserToAuthorizeAndLogin(EditText editText) {
         /* To authorize this app and log in it's necessary to redirect to the domain given,
          * activity_login there, and the server will redirect back to the app with its response. */
         String endpoint = MastodonAPI.ENDPOINT_AUTHORIZE;
@@ -109,8 +100,12 @@ public class LoginActivity extends AppCompatActivity {
         parameters.put("response_type", "code");
         parameters.put("scope", OAUTH_SCOPES);
         String url = "https://" + domain + endpoint + "?" + toQueryString(parameters);
-        Intent viewIntent = new Intent("android.intent.action.VIEW", Uri.parse(url));
+        Intent viewIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
-        startActivity(viewIntent);
+        if (viewIntent.resolveActivity(getPackageManager()) != null) {
+            startActivity(viewIntent);
+        } else {
+            editText.setError(getString(R.string.error_no_web_browser_found));
+        }
     }
 
     private MastodonAPI getApiFor(String domain) {
@@ -139,7 +134,7 @@ public class LoginActivity extends AppCompatActivity {
         if (prefClientId != null && prefClientSecret != null) {
             clientId = prefClientId;
             clientSecret = prefClientSecret;
-            redirectUserToAuthorizeAndLogin();
+            redirectUserToAuthorizeAndLogin(editText);
         } else {
             Callback<AppCredentials> callback = new Callback<AppCredentials>() {
                 @Override
@@ -156,7 +151,7 @@ public class LoginActivity extends AppCompatActivity {
                     editor.putString(domain + "/client_id", clientId);
                     editor.putString(domain + "/client_secret", clientSecret);
                     editor.apply();
-                    redirectUserToAuthorizeAndLogin();
+                    redirectUserToAuthorizeAndLogin(editText);
                 }
 
                 @Override
@@ -225,6 +220,26 @@ public class LoginActivity extends AppCompatActivity {
                 textView.setMovementMethod(LinkMovementMethod.getInstance());
             }
         });
+
+        // Apply any updates needed.
+        int versionCode = 1;
+        try {
+            versionCode = getPackageManager().getPackageInfo(getPackageName(), 0).versionCode;
+        } catch (PackageManager.NameNotFoundException e) {
+            Log.e(TAG, "The app version was not found. " + e.getMessage());
+        }
+        if (preferences.getInt("lastUpdate", 0) != versionCode) {
+            SharedPreferences.Editor editor = preferences.edit();
+            if (versionCode == 14) {
+                /* This version switches the order of scheme and host in the OAuth redirect URI.
+                 * But to fix it requires forcing the app to re-authenticate with servers. So, clear
+                 * out the stored client id/secret pairs. The only other things that are lost are
+                 * "rememberedVisibility", "loggedInUsername", and "loggedInAccountId". */
+                editor.clear();
+            }
+            editor.putInt("lastUpdate", versionCode);
+            editor.apply();
+        }
     }
 
     @Override

app/src/main/res/values/donottranslate.xml

@@ -4,7 +4,7 @@
     <string name="app_website">http://tusky.keylesspalace.com</string>
     <string name="tusky_api_url">https://tuskynotifier.keylesspalace.com</string>
 
-    <string name="oauth_scheme">com.keylesspalace.tusky</string>
+    <string name="oauth_scheme">oauth2redirect</string>
-    <string name="oauth_redirect_host">oauth2redirect</string>
+    <string name="oauth_redirect_host">com.keylesspalace.tusky</string>
     <string name="preferences_file_key">com.keylesspalace.tusky.PREFERENCES</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -1,8 +1,9 @@
-<resources xmlns:tools="http://schemas.android.com/tools">
+<resources>
 
+    <string name="error_no_web_browser_found">Couldn\'t find a web browser to use.</string>
     <string name="error_authorization_unknown">An unidentified authorization error occurred.</string>
-    <string name="error_authorization_denied" tools:ignore="MissingTranslation">Authorization was denied.</string>
+    <string name="error_authorization_denied">Authorization was denied.</string>
-    <string name="error_retrieving_oauth_token" tools:ignore="MissingTranslation">Failed getting a login token.</string>
+    <string name="error_retrieving_oauth_token">Failed getting a login token.</string>
     <string name="error_fetching_notifications">Notifications could not be fetched.</string>
     <string name="error_compose_character_limit">The status is too long!</string>
     <string name="error_sending_status">The status failed to be sent.</string>