Merge pull request #207 from cunarist/disable-reqwest-on-android

Disable `reqwest` on Android

flutter_ffi_plugin/example/native/sample_crate/Cargo.toml

@@ -6,8 +6,10 @@ edition = "2021"
 [target.'cfg(any(target_os = "windows", target_os = "macos", target_os = "linux"))'.dependencies]
 machineid-rs = "1.2.4"
 
+[target.'cfg(not(any(target_os = "android")))'.dependencies]
+reqwest = "0.11.22"
+
 [dependencies]
 num = "0.4"
 image = "0.24.3"
 chrono = "0.4.31"
-reqwest = "0.11.22"

flutter_ffi_plugin/example/native/sample_crate/src/lib.rs

@@ -35,7 +35,18 @@ pub fn get_current_time() -> DateTime<offset::Local> {
 }
 
 // `reqwest` supports all platforms, including web.
-
+// However, compiling it for Android on Windows can be challenging
+// due to its dependency on the `openssl-sys` crate,
+// which requires the corresponding C library to be installed on the system.
+// Compiling `reqwest` for Android is possible with the right system setup,
+// but it's intentionally disabled in our sample crate
+// to ensure that the example app 'just works'.
+
+#[cfg(any(target_os = "android"))]
+pub async fn fetch_from_web_api(url: &str) -> String {
+    String::from("API fetching is disabled on this platform.")
+}
+#[cfg(not(any(target_os = "android")))]
 pub async fn fetch_from_web_api(url: &str) -> String {
     reqwest::get(url)
         .await