Updated on 2026-08-14

app/src/main/java/com/tangem/data/LogFileProvider.java

@@ -0,0 +1,108 @@
+package com.tangem.data;
+
+import android.content.ContentProvider;
+import android.content.ContentValues;
+import android.content.UriMatcher;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.ParcelFileDescriptor;
+import android.util.Log;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+
+/**
+ * Created by dvol on 15.02.2018.
+ */
+
+public class LogFileProvider extends ContentProvider {
+
+    private static final String CLASS_NAME = "LogFileProvider";
+
+    // The authority is the symbolic name for the provider class
+    public static final String AUTHORITY = "com.tangem.LogFileProvider";
+
+    // UriMatcher used to match against incoming requests
+    private UriMatcher uriMatcher;
+
+    @Override
+    public boolean onCreate() {
+        uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
+
+        // Add a URI to the matcher which will match against the form
+        // 'content://it.my.app.LogFileProvider/*'
+        // and return 1 in the case that the incoming Uri matches this pattern
+        uriMatcher.addURI(AUTHORITY, "*", 1);
+
+        return true;
+    }
+
+    @Override
+    public ParcelFileDescriptor openFile(Uri uri, String mode)
+            throws FileNotFoundException {
+
+        String LOG_TAG = CLASS_NAME+"-oF";
+
+        Log.v(LOG_TAG,
+                "Called with uri: '" + uri + "'." + uri.getLastPathSegment());
+
+        // Check incoming Uri against the matcher
+        switch (uriMatcher.match(uri)) {
+
+            // If it returns 1 - then it matches the Uri defined in onCreate
+            case 1:
+
+                // The desired file name is specified by the last segment of the
+                // path
+                // E.g.
+                // 'content://it.my.app.LogFileProvider/Test.txt'
+                // Take this and build the path to the file
+                String fileLocation = getContext().getCacheDir() + File.separator
+                        + uri.getLastPathSegment();
+
+                // Create & return a ParcelFileDescriptor pointing to the file
+                // Note: I don't care what mode they ask for - they're only getting
+                // read only
+                ParcelFileDescriptor pfd = ParcelFileDescriptor.open(new File(
+                        fileLocation), ParcelFileDescriptor.MODE_READ_ONLY);
+                return pfd;
+
+            // Otherwise unrecognised Uri
+            default:
+                Log.v(LOG_TAG, "Unsupported uri: '" + uri + "'.");
+                throw new FileNotFoundException("Unsupported uri: "
+                        + uri.toString());
+        }
+    }
+
+    // //////////////////////////////////////////////////////////////
+    // Not supported / used / required for this example
+    // //////////////////////////////////////////////////////////////
+
+    @Override
+    public int update(Uri uri, ContentValues contentvalues, String s,
+                      String[] as) {
+        return 0;
+    }
+
+    @Override
+    public int delete(Uri uri, String s, String[] as) {
+        return 0;
+    }
+
+    @Override
+    public Uri insert(Uri uri, ContentValues contentvalues) {
+        return null;
+    }
+
+    @Override
+    public String getType(Uri uri) {
+        return null;
+    }
+
+    @Override
+    public Cursor query(Uri uri, String[] projection, String s, String[] as1,
+                        String s1) {
+        return null;
+    }
+}