Flutter与Android之间方法互相调用 在安卓中写了两个方法：
private String androidMethod2() {
return "这是来自安卓的方法二";
}
private String androidMethod1() {
return "这是来自安卓的方法一";
}在flutter中也写了两个方法：
String flutterMethod1() {
return "这是来自Flutter的方法一";
}
String flutterMethod2() {
return "这是来自Flutter的方法二";
}点击按钮互相调用。
flutter调用Andorid
IconButton(
icon: Icon(Icons.add),
onPressed: () async {
String message =
await methodChannel.invokeMethod('androidMethod1');
print(message);
print('flutter 按钮1===========>');
}),
IconButton(
icon: Icon(Icons.delete),
onPressed: () async {
String message =
await methodChannel.invokeMethod('androidMethod2');
print(message);
print('flutter 按钮2===========>');
}),Android调用Flutter
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn1:
methodChannel.invokeMethod("flutterMethod1", null, new MethodChannel.Result() {
@Override
public void success(Object o) {
String message = (String) o;
System.out.println(message);
}
@Override
public void error(String s, String s1, Object o) {
}
@Override
public void notImplemented() {
}
});
System.out.println("android 按钮1====================>");
break;
case R.id.btn2:
methodChannel.invokeMethod("flutterMethod2", null, new MethodChannel.Result() {
@Override
public void success(Object o) {
String message = (String) o;
System.out.println(message);
}
@Override
public void error(String s, String s1, Object o) {
}
@Override
public void notImplemented() {
}
});
System.out.println("android 按钮2====================>");
break;
}
}在Andorid中声明
methodChannel = new MethodChannel(flutterView, CHANNEL);
methodChannel.setMethodCallHandler((methodCall, result) -> {
if (methodCall.method.equals("androidMethod1")) {
result.success(androidMethod1());
} else if (methodCall.method.equals("androidMethod2")) {
result.success(androidMethod2());
}
});在Flutter中声明
@override
void initState() {
methodChannel.setMethodCallHandler(_handlePlatformIncrement);
super.initState();
}
Future<dynamic> _handlePlatformIncrement(MethodCall call) async {
if (call.method == 'flutterMethod1') {
return flutterMethod1();
} else if (call.method == 'flutterMethod2') {
return flutterMethod2();
}
return '';
}最终效果运行如下：
