共计 1847 个字符,预计需要花费 5 分钟才能阅读完成。
原理:在 main 里监听最外层返回键,然后通讯原生,执行
moveTaskToBack(false)
回到手机桌面不退出 app
安卓文件里 MainActivity.java
import android.os.Bundle;
import io.flutter.app.FlutterActivity;
import io.flutter.plugins.GeneratedPluginRegistrant;
import android.view.KeyEvent;
import io.flutter.plugin.common.MethodCall;
import io.flutter.plugin.common.MethodChannel;
public class MainActivity extends FlutterActivity {
// 通讯名称, 回到手机桌面
private final String CHANNEL = "android/back/desktop";
@Override
protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);
GeneratedPluginRegistrant.registerWith(this);
new MethodChannel(getFlutterView(), CHANNEL).setMethodCallHandler(new MethodChannel.MethodCallHandler() {
@Override
public void onMethodCall(MethodCall methodCall, MethodChannel.Result result) {if (methodCall.method.equals("backDesktop")) {result.success(true);
moveTaskToBack(false);
}
}
}
);
}
}
新建一个 android_back_desktop.dart
import 'package:flutter/services.dart';
import 'package:flutter/material.dart';
class AndroidBackTop {
// 初始化通信管道 - 设置退出到手机桌面
static const String CHANNEL = "android/back/desktop";
// 设置回退到手机桌面
static Future<bool> backDeskTop() async {final platform = MethodChannel(CHANNEL);
// 通知安卓返回, 到手机桌面
try {final bool out = await platform.invokeMethod('backDesktop');
if (out) debugPrint('返回到桌面');
} on PlatformException catch (e) {debugPrint("通信失败 ( 设置回退到安卓手机桌面: 设置失败)");
print(e.toString());
}
return Future.value(false);
}
}
入口文件 main.dart
import 'package:flutter_smart_park/untils/android_back_desktop.dart';
export 'package:common_utils/common_utils.dart';
void main() async {runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Provide<ConfigModel>(builder: (context, child, configModel) {
return MaterialApp(
title: 'test',
debugShowCheckedModeBanner: false,
home: WillPopScope(onWillPop: () async {AndroidBackTop.backDeskTop(); // 设置为返回不退出 app
return false; // 一定要 return false
},
child: Text("Test"),
),
);
},
);
}
}
End
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正文完