feat: implement the launch command

src/commands/launch.rs

@@ -0,0 +1,21 @@
+use clap::Parser;
+use anyhow::{Result, bail, anyhow};
+
+#[derive(Parser, Debug)]
+pub struct Launch {}
+
+pub fn handle(_args: Launch) -> Result<()> {
+    // Fetch and deserialize .android
+    let dot_android = android_cli::get_dot_android()
+        .ok_or_else(|| anyhow!(".android not found, can't launch activity"))?;
+
+    // Try to launch MainActivity using ADB
+    let launch_status =
+        android_cli::launch_activity(dot_android.package_id, dot_android.main_activity_name)?;
+
+    if !launch_status.success() {
+        bail!("failed to launch activity");
+    }
+
+    Ok(())
+}

src/commands/mod.rs

@@ -2,3 +2,4 @@ pub mod build;
 pub mod create;
 pub mod install;
 pub mod run;
+pub mod launch;

src/main.rs

@@ -19,6 +19,7 @@ enum SubCommand {
     Build(commands::build::Build),
     Install(commands::install::Install),
     Run(commands::run::Run),
+    Launch(commands::launch::Launch)
 }
 
 fn main() {
@@ -32,6 +33,7 @@ fn main() {
         SubCommand::Build(args) => commands::build::handle(args),
         SubCommand::Install(args) => commands::install::handle(args),
         SubCommand::Run(args) => commands::run::handle(args),
+        SubCommand::Launch(args) => commands::launch::handle(args)
     };
 
     if result.is_err() {