背景：
原生的路由（跳转）方案存在的问题：
显示跳转：类依赖耦合严重
隐士跳转：规则集中化管理，协作扩展困难
ARouter由此诞生！
使用：
1 在app的build.gradle中的defaultConfig中
javaCompileOptions {
annotationProcessorOptions {
arguments = [AROUTER_MODULE_NAME: project.getName()]
}
}
dependencies中
implementation 'com.alibaba:arouter-api:1.5.2'
annotationProcessor 'com.alibaba:arouter-compiler:1.5.2'
2项目的application中
public class WyApp extends Application {
@Override
public void onCreate() {
super.onCreate();
if (isDebug()) { // 这两行必须写在init之前，否则这些配置在init过程中将无效
ARouter.openLog(); // 打印日志
ARouter.openDebug(); // 开启调试模式(如果在InstantRun模式下运行，必须开启调试模式！线上版本需要关闭,否则有安全风险)
}
ARouter.init(WyApp.this); // 尽可能早，推荐在Application中初始化
}
private boolean isDebug() {
return true;
}
}
3MainActivity中（实现跳转到另一个activity）
public void go(View view) {
ARouter.getInstance().build("/app/ArouterActivity").navigation();
}
4ArouterActivity
@Route(path = "/app/ArouterActivity")
public class ArouterActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_arouter);
ARouter.getInstance().inject(this);
}
}
5 Activity之间携带参数跳转（string）
ARouter.getInstance().build("/app/ArouterActivity")
.withString("wy","I am from MainActivity data！")//携带参数跳转
.navigation();
@Autowired
String wy;
Log.e("wy", "onCreate: "+wy);
@Route(path = "/app/ArouterActivity")
public class ArouterActivity extends AppCompatActivity {
@Autowired
String wy;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_arouter);
ARouter.getInstance().inject(this);
Log.e("wy", "onCreate: "+wy);
}
}
6 Activity之间携带参数跳转（自定义对象）
ARouter.getInstance().build("/app/ArouterActivity")
.withString("wy","I am from MainActivity data！")//携带参数跳转
.withSerializable("user",new User("xiaoming",18))
.navigation();
第二个属性写成
@Autowired
User user;
也行，相当于
@Autowired(name=“user”)
User user;
@Route(path = "/app/ArouterActivity")
public class ArouterActivity extends AppCompatActivity {
@Autowired
String wy;
@Autowired(name="user")
User mUser;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_arouter);
ARouter.getInstance().inject(this);
Log.e("wy", "onCreate: "+wy+" user: "+mUser);
}
}
public class User implements Serializable {
public String name;
public int age;
public User(String name, int age) {
this.name = name;
this.age = age;
}
@Override
public String toString() {
return "User{" +
"name='" + name + '\'' +
", age=" + age +
'}';
}
}
7拦截器的使用：经验：如果拦截器没起作用，卸载重装apk
定义两个拦截器FirstInterceptor，SecondInterceptor ，priority数字越小越选执行
@Interceptor(priority = 1)
public class FirstInterceptor implements IInterceptor {
@Override
public void process(Postcard postcard, InterceptorCallback callback) {
Log.e("wy", "FirstInterceptor getPath:" +postcard.getPath()+ " callback:"+callback.toString() );
callback.onContinue(postcard);
}
@Override
public void init(Context context) {
Log.e("wy", "FirstInterceptor init: "+context.toString() );
}
}
@Interceptor(priority = 2)
public class SecondInterceptor implements IInterceptor {
@Override
public void process(Postcard postcard, InterceptorCallback callback) {
Log.e("wy", "SecondInterceptor process: "+postcard.getPath()+ " callback:"+callback.toString() );
callback.onContinue(postcard);
// if ("/app/ArouterActivity".equals(postcard.getPath())) {
//
// // 这里的弹窗仅做举例，代码写法不具有可参考价值
// final AlertDialog.Builder ab = new AlertDialog.Builder(postcard.getContext());
// ab.setCancelable(false);
// ab.setTitle("温馨提醒");
// ab.setMessage("想要跳转到Test4Activity么？(触发了\"/inter/test1\"拦截器，拦截了本次跳转)");
// ab.setNegativeButton("继续", new DialogInterface.OnClickListener() {
// @Override
// public void onClick(DialogInterface dialog, int which) {
// callback.onContinue(postcard);
// }
// });
// ab.setNeutralButton("算了", new DialogInterface.OnClickListener() {
// @Override
// public void onClick(DialogInterface dialog, int which) {
// callback.onInterrupt(null);
// }
// });
// ab.setPositiveButton("加点料", new DialogInterface.OnClickListener() {
// @Override
// public void onClick(DialogInterface dialog, int which) {
// postcard.withString("extra", "我是在拦截器中附加的参数");
// callback.onContinue(postcard);
// }
// });
//
// ab.create().show();
//
MainLooper.runOnUiThread(new Runnable() {
@Override
public void run() {
ab.create().show();
}
});
// } else {
// callback.onContinue(postcard);
// }
}
@Override
public void init(Context context) {
Log.e("wy", "SecondInterceptor init: "+context.toString() );
}
}
看运行日志
7.1在拦截器中添加参数：参见加点料，原生的跳转方案做不到这一点，只能直接跳转，无法拦截干预！
@Interceptor(priority = 1)
public class FirstInterceptor implements IInterceptor {
@Override
public void process(Postcard postcard, InterceptorCallback callback) {
Log.e("wy", "FirstInterceptor process getPath:" +postcard.getPath()+ " callback:"+callback.toString() );
// callback.onContinue(postcard);
if ("/app/ArouterActivity".equals(postcard.getPath())) {
// 这里的弹窗仅做举例，代码写法不具有可参考价值
final AlertDialog.Builder ab = new AlertDialog.Builder(postcard.getContext());
ab.setCancelable(false);
ab.setTitle("温馨提醒");
ab.setMessage("想要跳转到ArouterActivity么？(触发了\"FirstInterceptor\"拦截器，拦截了本次跳转)");
ab.setNegativeButton("继续", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
callback.onContinue(postcard);
}
});
ab.setNeutralButton("算了", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
callback.onInterrupt(null);
}
});
ab.setPositiveButton("加点料", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
postcard.withString("extra", "我是在拦截器中附加的参数");
callback.onContinue(postcard);
}
});
MainLooper.runOnUiThread(new Runnable() {
@Override
public void run() {
ab.create().show();
}
});
} else {
callback.onContinue(postcard);
}
}
@Override
public void init(Context context) {
Log.e("wy", "FirstInterceptor init: "+context.toString() );
}
}
