improve extensibility of emailsender

acra/src/main/java/org/acra/attachment/AcraContentProvider.java

@@ -17,7 +17,9 @@
 package org.acra.attachment;
 
 import android.content.ContentProvider;
+import android.content.ContentResolver;
 import android.content.ContentValues;
+import android.content.Context;
 import android.database.Cursor;
 import android.database.MatrixCursor;
 import android.net.Uri;
@@ -51,7 +53,8 @@ public class AcraContentProvider extends ContentProvider {
 
     @Override
     public boolean onCreate() {
-        authority = getContext().getPackageName() + ".acra";
+        //noinspection ConstantConditions
+        authority = getAuthority(getContext());
         if (ACRA.DEV_LOGGING) ACRA.log.d(ACRA.LOG_TAG, "Registered content provider for authority " + authority);
         return true;
     }
@@ -82,14 +85,15 @@ public Cursor query(@NonNull Uri uri, @Nullable String[] projection, @Nullable S
 
     @Nullable
     private File getFileForUri(Uri uri) {
-        if(!"content".equals(uri.getScheme()) || !authority.equals(uri.getAuthority())){
+        if (!ContentResolver.SCHEME_CONTENT.equals(uri.getScheme()) || !authority.equals(uri.getAuthority())) {
             return null;
         }
         final List<String> segments = new ArrayList<String>(uri.getPathSegments());
         if (segments.size() < 2) return null;
         final String dir = segments.remove(0).toUpperCase();
         try {
             final Directory directory = Directory.valueOf(dir);
+            //noinspection ConstantConditions
             return directory.getFile(getContext(), TextUtils.join(File.separator, segments));
         } catch (IllegalArgumentException e) {
             return null;
@@ -132,4 +136,35 @@ public ParcelFileDescriptor openFile(@NonNull Uri uri, @NonNull String mode) thr
         }
         return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
     }
+
+    private static String getAuthority(@NonNull Context context) {
+        return context.getPackageName() + ".acra";
+    }
+
+    /**
+     * Get an uri for this content provider for the given file
+     *
+     * @param context a context
+     * @param file    the file
+     * @return the uri
+     */
+    public static Uri getUriForFile(@NonNull Context context, @NonNull File file) {
+        return getUriForFile(context, Directory.ROOT, file.getPath());
+    }
+
+    /**
+     * Get an uri for this content provider for the given file
+     *
+     * @param context      a context
+     * @param directory    the directory, to with the path is relative
+     * @param relativePath the file path
+     * @return the uri
+     */
+    public static Uri getUriForFile(@NonNull Context context, @NonNull Directory directory, @NonNull String relativePath) {
+        return new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(getAuthority(context))
+                .path(directory.name().toLowerCase() + (relativePath.charAt(0) == File.separatorChar ? "" : File.separator) + relativePath)
+                .build();
+    }
 }

acra/src/main/java/org/acra/attachment/AttachmentUriProvider.java

@@ -6,7 +6,7 @@
 
 import org.acra.config.ACRAConfiguration;
 
-import java.util.ArrayList;
+import java.util.List;
 
 /**
  * @author F43nd1r
@@ -16,5 +16,5 @@
 public interface AttachmentUriProvider {
 
     @NonNull
-    ArrayList<Uri> getAttachments(Context context, ACRAConfiguration configuration);
+    List<Uri> getAttachments(Context context, ACRAConfiguration configuration);
 }

acra/src/main/java/org/acra/attachment/DefaultAttachmentProvider.java

@@ -8,6 +8,7 @@
 import org.acra.config.ACRAConfiguration;
 
 import java.util.ArrayList;
+import java.util.List;
 
 import static org.acra.ACRA.LOG_TAG;
 
@@ -19,7 +20,7 @@
 public class DefaultAttachmentProvider implements AttachmentUriProvider {
     @NonNull
     @Override
-    public ArrayList<Uri> getAttachments(Context context, ACRAConfiguration configuration) {
+    public List<Uri> getAttachments(Context context, ACRAConfiguration configuration) {
         final ArrayList<Uri> result = new ArrayList<Uri>();
         for (String s : configuration.attachmentUris()){
             try {

acra/src/main/java/org/acra/file/CrashReportPersister.java

@@ -23,18 +23,16 @@
 
 import org.acra.ACRAConstants;
 import org.acra.collector.CrashReportData;
-import org.acra.util.JsonUtils;
 import org.acra.util.IOUtils;
+import org.acra.util.JsonUtils;
 import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.io.BufferedInputStream;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.OutputStreamWriter;
 
 /**
  * Stores a crash reports data with {@link org.acra.ReportField} enum values as keys.
@@ -74,13 +72,6 @@ public CrashReportData load(@NonNull File file) throws IOException, JSONExceptio
      * @throws java.io.IOException if the CrashReportData could not be written to the OutputStream.
      */
     public void store(@NonNull CrashReportData crashData, @NonNull File file) throws IOException {
-
-        final OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(file), ACRAConstants.UTF8);
-        try {
-            writer.write(crashData.toJSON().toString());
-            writer.flush();
-        } finally {
-            IOUtils.safeClose(writer);
-        }
+        IOUtils.writeStringToFile(file, crashData.toJSON().toString());
     }
 }

acra/src/main/java/org/acra/http/HttpUtils.java

@@ -84,7 +84,7 @@ public static String getParamsAsFormString(@NonNull Map<?, ?> parameters) throws
 
     public static String getFileNameFromUri(Context context, Uri uri) {
         String result = null;
-        if (uri.getScheme().equals("content")) {
+        if (uri.getScheme().equals(ContentResolver.SCHEME_CONTENT)) {
             final Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
             try {
                 if (cursor != null && cursor.moveToFirst()) {