即使变量不匹配，切换语句也会调用 AsyncTask 中的所有案例

Question

我用 switch 语句创建了一个 AsyncTask。这里调用了测试和医学案例。非常奇怪的行为

    BackendAsync backendAsync = new BackendAsync();
    backendAsync.execute("Test");

public class BackendAsync extends AsyncTask<String,Void,Void>{

    @Override
    protected Void doInBackground(String... strings) {

        switch (strings[0]){

            case "Test": {

                Log.d("Test", "doInBackground: Called Test");
            }
            case "Medicine": {

                Log.d("Medicine", "doInBackground: Called Medicine");
            }


        }

        return null;
    }
}

结果：

D/Test：doInBackground：称为测试 D/Medicine：doInBackground：称为医学

Answer 1

像这样使用它

 case "Test": {

            Log.d("Test", "doInBackground: Called Test");
            break;
        }
        case "Medicine": {

            Log.d("Medicine", "doInBackground: Called Medicine");
            break;
        }

Answer 2

BackendAsync backendAsync = new BackendAsync();
    backendAsync.execute("Test");

public class BackendAsync extends AsyncTask<String,Void,Void>{

    @Override
    protected Void doInBackground(String... strings) {

        switch (strings[0]){

            case "Test": {

                Log.d("Test", "doInBackground: Called Test");
            }
    break;
            case "Medicine": {

                Log.d("Medicine", "doInBackground: Called Medicine");
            }
    breakl


        }

        return null;
    }
}

Answer 3

在每个案例之后添加中断

public class BackendAsync extends AsyncTask<String,Void,Void>{

    @Override
    protected Void doInBackground(String... strings) {

        switch (strings[0]){

            case "Test": {

                Log.d("Test", "doInBackground: Called Test");
                  break;
            }
            case "Medicine": {

                Log.d("Medicine", "doInBackground: Called Medicine");
                  break;
            }


        }

        return null;
    }
}