Android(安卓)ARouter路由中传对象遇到的坑

在ARouter的github上，最初还以为是实现SerializationService这个类，其实不是。是单独写一个类实现它，代码如下：

/** * Author: meizivskai * Time: 2020-01-01 * Description: This is JsonServiceImpl */@Route(path = "/service/json")public class JsonServiceImpl implements SerializationService {    @Override    public void init(Context context) {    }    @Override    public  T json2Object(String text, Class clazz) {        return JSON.parseObject(text, clazz);    }    @Override    public String object2Json(Object instance) {        return JSON.toJSONString(instance);    }    @Override    public  T parseObject(String input, Type clazz) {        return JSON.parseObject(input, clazz);    }}

自定义的实体，不能序列化，否则取不到值。我的自定义对象：

/** * Author: meizivskai * Time: 2019-12-12 * Description: This is TrueFalse */public class TrueFalse {    public int mQuestion;    public boolean mTrueQuestion;    public TrueFalse() {    }    public TrueFalse(int question, boolean trueQuestion) {        this.mQuestion = question;        this.mTrueQuestion = trueQuestion;    }    public int getmQuestion() {        return mQuestion;    }    public TrueFalse setmQuestion(int mQuestion) {        this.mQuestion = mQuestion;        return this;    }    public boolean ismTrueQuestion() {        return mTrueQuestion;    }    public TrueFalse setmTrueQuestion(boolean mTrueQuestion) {        this.mTrueQuestion = mTrueQuestion;        return this;    }    @Override    public String toString() {        return "TrueFalse{" +                "mQuestion=" + mQuestion +                ", mTrueQuestion=" + mTrueQuestion +                '}';    }}

需要注意的是实体中，要写无参的构造方法，属性是公开权限public。

点击跳转：

mFalseButton.setOnClickListener(new View.OnClickListener() {    @Override    public void onClick(View v) {        final TrueFalse trueFalse = new TrueFalse(100, false);        ARouter.getInstance().build(Constant.PATH_SECOND)                .withObject("trueFalse", trueFalse)                .navigation(MainActivity.this, new NavigationCallback() {                    @Override                    public void onFound(Postcard postcard) {                        Log.e("router", "onFound: " + postcard.getPath());                    }                    @Override                    public void onLost(Postcard postcard) {                        Log.e("router", "onLost: " + postcard.getPath());                    }                    @Override                    public void onArrival(Postcard postcard) {                        Log.e("router", "onArrival: " + postcard.getPath());                    }                    @Override                    public void onInterrupt(Postcard postcard) {                        Log.e("router", "onInterrupt: " + postcard.getPath());                    }                });    }});

界面接受值：

/** * Author: meizivskai * Time: 2020-01-01 * Description: This is FirstActivity */@Route(path = Constant.PATH_SECOND)public class SecondActivity extends BaseActivity {    @Autowired    TrueFalse trueFalse;    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_second);        Log.e("router", "onCreate: " + trueFalse);    }}

BaseActivity里面要注入下：

/** * Author: meizivskai * Time: 2020-01-01 * Description: This is BaseActivity */public class BaseActivity extends AppCompatActivity {    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        ARouter.getInstance().inject(this);    }}

结果就可以取到值了：

终结下：

1.实体中成员变量最好写成public

2.实体要写无参的构造方法

3.实体不能被序列化

4.写一个实现了SerializationService的类

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