【移動應用開發(fā)技術】Android MVP中如何實現(xiàn)BaseFragment通用式封裝

【移動應用開發(fā)技術】AndroidMVP中如何實現(xiàn)BaseFragment通用式封裝

/upload/information/20200623/125/117889.pngpackage

com.test.mvp.mvpdemo.mvp.v6.basemvp;

import

android.os.Bundle;

import

android.support.annotation.IdRes;

import

android.support.annotation.LayoutRes;

import

android.support.annotation.NonNull;

import

android.support.annotation.Nullable;

import

android.support.v4.app.Fragment;

import

android.view.LayoutInflater;

import

android.view.View;

import

android.view.ViewGroup;

import

com.test.mvp.mvpdemo.mvp.v6.inject.InjectPresenter;

import

java.lang.reflect.Field;

import

java.util.ArrayList;

import

java.util.List;

public

abstract

class

BaseFragment

extends

Fragment

implements

IBaseView

{

private

List<BasePresenter>

mInjectPresenters;

private

View

mLayoutView;

protected

abstract

@LayoutRes

int

setLayout();

protected

abstract

void

initViews(@Nullable

Bundle

savedInstanceState);

protected

abstract

void

initData();

@SuppressWarnings("ConstantConditions")

protected

<T

extends

View>

T

$(@IdRes

int

viewId)

{

return

this.getView().findViewById(viewId);

}

@SuppressWarnings({"unchecked",

"TryWithIdenticalCatches"})

@Nullable

@Override

public

View

onCreateView(@NonNull

LayoutInflater

inflater,

@Nullable

ViewGroup

container,

@Nullable

Bundle

savedInstanceState)

{

View

view

=

inflater.inflate(setLayout(),

container,

false);

mInjectPresenters

=

new

ArrayList<>();

//獲得已經(jīng)申明的變量，包括私有的

Field[]

fields

=

this.getClass().getDeclaredFields();

for

(Field

field

:

fields)

{

//獲取變量上面的注解類型

InjectPresenter

injectPresenter

=

field.getAnnotation(InjectPresenter.class);

if

(injectPresenter

!=

null)

{

try

{

Class<?

extends

BasePresenter>

type

=

(Class<?

extends

BasePresenter>)

field.getType();

BasePresenter

mInjectPresenter

=

type.newInstance();

//綁定

mInjectPresenter.attach(this);

field.setAccessible(true);

field.set(this,

mInjectPresenter);

mInjectPresenters.add(mInjectPresenter);

}

catch

(IllegalAccessException

e)

{

e.printStackTrace();

}

catch

(java.lang.InstantiationException

e)

{

e.printStackTrace();

}

catch

(ClassCastException

e)

{

e.printStackTrace();

throw

new

RuntimeException("SubClass

must

extends

Class:BasePresenter");

}

}

}

return

view;

}

@Override

public

void

onViewCreated(@NonNull

View

view,

@Nullable

Bundle

savedInstanceState)

{

super.onViewCreated(view,

savedInstanceState);

initViews(savedInstanceState);

initData();

}

@Override

public

void

onDestroy()

{

super.onDestroy();

for

(BasePresenter

presenter

:

mInjectPresenters)

{

presenter.detach();

}

mInjectPresenters.clear();

mInjectPresenters

=

null;

}

}/upload/information/20200623/125/117890.pngpublic

class

SecondActivity

extends

AppCompatActivity

{

@Override

protected

void

onCreate(@Nullable

Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_second);

/**

*

開啟一個

fragment

*/

getSupportFragmentManager().beginTransaction().replace(R.id.second_container,

new

SecondFragment()).commit();

}

}<?xml

version="1.0"

encoding="utf-8"?>

<android.support.constraint.ConstraintLayout

xmlns:android="/apk/res/android"

xmlns:app="/apk/res-auto"

xmlns:tools="/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".mvc.MainActivity">

<FrameLayout

android:id="@+id/second_container"

android:layout_width="match_parent"

android:layout_height="match_parent"

/>

</android.support.constraint.ConstraintLayout>View層：新建SecondFragment實現(xiàn)類：package

com.test.mvp.mvpdemo.mvp.v6.view;

import

android.os.Bundle;

import

android.support.annotation.Nullable;

import

android.widget.TextView;

import

android.widget.Toast;

import

com.test.mvp.mvpdemo.R;

import

com.test.mvp.mvpdemo.mvp.v6.SecondContract;

import

com.test.mvp.mvpdemo.mvp.v6.basemvp.BaseFragment;

import

com.test.mvp.mvpdemo.mvp.v6.inject.InjectPresenter;

import

com.test.mvp.mvpdemo.mvp.v6.presenter.SecondPresenter;

public

class

SecondFragment

extends

BaseFragment

implements

SecondContract.ISecondView

{

private

TextView

tvFragment;

@InjectPresenter

private

SecondPresenter

mPresenter;

@Override

protected

int

setLayout()

{

return

R.layout.fragment_second;

}

@Override

protected

void

initViews(@Nullable

Bundle

savedInstanceState)

{

tvFragment

=

$(R.id.tv_fragment);

}

@Override

protected

void

initData()

{

mPresenter.handlerData();

}

@Override

public

void

showDialog()

{

//

Toast.makeText(getContext(),

"this

is

Fragment",

Toast.LENGTH_SHORT).show();

}

@SuppressWarnings("ConstantConditions")

@Override

public

void

succes(String

content)

{

getActivity().runOnUiThread(new

Runnable()

{

@Override

public

void

run()

{

Toast.makeText(getContext(),

""

+

content,

Toast.LENGTH_SHORT).show();

tvFragment.setText(content);

}

});

}

}###Presenter

層：新建

SecondPresenter

實現(xiàn)類：

package

com.test.mvp.mvpdemo.mvp.v6.presenter;

import

com.test.mvp.mvpdemo.mvp.v6.SecondContract;

import

com.test.mvp.mvpdemo.mvp.v6.basemvp.BasePresenter;

import

com.test.mvp.mvpdemo.mvp.v6.model.SecondModel;

import

java.io.IOException;

import

okhttp3.Call;

import

okhttp3.Callback;

import

okhttp3.Response;

public

class

SecondPresenter

extends

BasePresenter<SecondContract.ISecondView,

SecondModel>

implements

SecondContract.ISecondPresenter

{

@Override

public

void

handlerData()

{

getView().showDialog();

getModel().requestBaidu(new

Callback()

{

@Override

public

void

onFailure(Call

call,

IOException

e)

{

}

@Override

public

void

onResponse(Call

call,

Response

response)

throws

IOException

{

String

content

=

response.body().string();

getView().succes(content);

}

});

}

}package

com.test.mvp.mvpdemo.mvp.v6.model;

import

com.test.mvp.mvpdemo.mvp.v6.SecondContract;

import

com.test.mvp.mvpdemo.mvp.v6.basemvp.BaseModel;

import

okhttp3.Callback;

import

okhttp3.OkHttpClient;

import

okhttp3.Request;

public

class

SecondModel

extends

BaseModel

implements

SecondContract.ISecondModel

{

@Override

public

void

requestBaidu(Callback

callback)

{

OkHttpClient

client

=

new

OkHttpClient();

Request

request

=

new

Request.Builder()

.url("/smile_running")

.build();

client.newCall(request).enqueue(callback);

}

}package

com.test.mvp.mvpdemo.mvp.v6;

import

com.test.mvp.mvpdemo.mvp.v6.basemvp.IBasePresenter;

import

com.test.mvp.mvpdemo.mvp.v6.basemvp.IBaseView;

import

okhttp3.Callback;

public

interface

SecondContract

{

interface

ISecondModel

{

void

requestBaidu(Callback

callback);

}

interface

ISecondView

extends

IBaseView

{

void

showDialog();

void

succes(String

content);

}

interface

ISecondPresenter

extends

IBasePresenter

{

void

handlerData();

}

}/upload/information/20200623/125/117891.png記錄錯誤原因：在子線程中更新UI操作。

@Override

public

void

succes(String

content)

{

Toast.makeText(getContext(),

""

+

content,

Toast.LENGTH_SHORT).show();

tvFragment.setText(content);

}07-09

23:51:21.887

9769-9788/com.test.mvp.mvpdemo

E/EGL_adreno:

tid

9788:

eglSurfaceAttrib(1319):

error

0x3009

(EGL_BAD_MATCH)

07-09

23:51:21.915

9769-9788/com.test.mvp.mvpdemo

E/EGL_adreno:

tid

9788:

eglSurfaceAttrib(1319):

error

0x3009

(EGL_BAD_MATCH)

07-09

23:51:23.362

9769-9788/com.test.mvp.mvpdemo

E/EGL_adreno:

tid

9788:

eglSurfaceAttrib(1319):

error

0x3009

(EGL_BAD_MATCH)

07-09

23:51:27.742

9769-9788/com.test.mvp.mvpdemo

E/EGL_adreno:

tid

9788:

eglSurfaceAttrib(1319):

error

0x3009

(EGL_BAD_MATCH)

07-09

23:51:28.069

9769-9798/com.test.mvp.mvpdemo

E/AndroidRuntime:

FATAL

EXCEPTION:

OkHttp

Dispatcher

Process:

com.test.mvp.mvpdemo,

PID:

9769

java.lang.reflect.UndeclaredThrowableException

at

$Proxy2.succes(Unknown

Source)

at

com.test.mvp.mvpdemo.mvp.v6.presenter.SecondPresenter$1.onResponse(SecondPresenter.java:25)

at

okhttp3.RealCall$AsyncCall.run(RealCall.kt:138)

at

java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)

at

java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)

at

java.lang.Thread.run(Thread.java:818)

Caused

by:

java.lang.reflect.InvocationTargetException

at

java.lang.reflect.Method.invoke(Native

Method)

at

java.lang.reflect.Method.invoke(Method.java:372)

at

com.test.mvp.mvpdemo.mvp.v6.basemvp.BasePresenter$1.invoke(BasePresenter.java:31)

at

java.lang.reflect.Proxy.invoke(Proxy.java:397)

at

$Proxy2.succes(Unknown

Source)

at

com.test.mvp.mvpdemo.mvp.v6.presenter.SecondPresenter$1.onResponse(SecondPresenter.java:25)

at

okhttp3.RealCall$AsyncCall.run(RealCall.kt:138)

at

java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)

at

java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)

at

java.lang.Thread.run(Thread.java:818)

Caused

by:

java.lang.RuntimeException:

Can't

create

handler

inside

thread

that

has

not

called

Looper.prepare()

at

android.os.Handler.<init>(Handler.java:200)

at

android.os.Handler.<init>(Handler.java:114)

at

android.widget.Toast$TN.<init>(Toast.java:359)

at

android.widget.Toast.<init>(Toast.ja