1 files changed, 100 insertions, 0 deletions
diff --git a/core/src/main/java/com/android/volley/toolbox/StringRequest.java b/core/src/main/java/com/android/volley/toolbox/StringRequest.java
new file mode 100644
index 0000000..df7b386
--- /dev/null
+++ b/core/src/main/java/com/android/volley/toolbox/StringRequest.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.volley.toolbox;
+
+import androidx.annotation.GuardedBy;
+import androidx.annotation.Nullable;
+import com.android.volley.NetworkResponse;
+import com.android.volley.Request;
+import com.android.volley.Response;
+import com.android.volley.Response.ErrorListener;
+import com.android.volley.Response.Listener;
+import java.io.UnsupportedEncodingException;
+
+/** A canned request for retrieving the response body at a given URL as a String. */
+public class StringRequest extends Request<String> {
+
+    /** Lock to guard mListener as it is cleared on cancel() and read on delivery. */
+    private final Object mLock = new Object();
+
+    @Nullable
+    @GuardedBy("mLock")
+    private Listener<String> mListener;
+
+    /**
+     * Creates a new request with the given method.
+     *
+     * @param method the request {@link Method} to use
+     * @param url URL to fetch the string at
+     * @param listener Listener to receive the String response
+     * @param errorListener Error listener, or null to ignore errors
+     */
+    public StringRequest(
+            int method,
+            String url,
+            Listener<String> listener,
+            @Nullable ErrorListener errorListener) {
+        super(method, url, errorListener);
+        mListener = listener;
+    }
+
+    /**
+     * Creates a new GET request.
+     *
+     * @param url URL to fetch the string at
+     * @param listener Listener to receive the String response
+     * @param errorListener Error listener, or null to ignore errors
+     */
+    public StringRequest(
+            String url, Listener<String> listener, @Nullable ErrorListener errorListener) {
+        this(Method.GET, url, listener, errorListener);
+    }
+
+    @Override
+    public void cancel() {
+        super.cancel();
+        synchronized (mLock) {
+            mListener = null;
+        }
+    }
+
+    @Override
+    protected void deliverResponse(String response) {
+        Response.Listener<String> listener;
+        synchronized (mLock) {
+            listener = mListener;
+        }
+        if (listener != null) {
+            listener.onResponse(response);
+        }
+    }
+
+    @Override
+    @SuppressWarnings("DefaultCharset")
+    protected Response<String> parseNetworkResponse(NetworkResponse response) {
+        String parsed;
+        try {
+            parsed = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
+        } catch (UnsupportedEncodingException e) {
+            // Since minSdkVersion = 8, we can't call
+            // new String(response.data, Charset.defaultCharset())
+            // So suppress the warning instead.
+            parsed = new String(response.data);
+        }
+        return Response.success(parsed, HttpHeaderParser.parseCacheHeaders(response));
+    }
+}