BaseFragment基类

简单了解设计模式
设计模式（设计模式概念,来自百度百科）
设计模式（Design Pattern）是一套被反复使用、多数人知晓的、经过分类的、代码设计经验的总结。
使用设计模式的目的：为了代码可重用性、让代码更容易被他人理解、保证代码可靠性。 设计模式使代码编写真正工程化；设计模式是软件工程的基石脉络，如同大厦的结构一样。

package com.example.wangmengjie20190719.base;

import android.os.Bundle;
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.example.wangmengjie20190719.mvp.IContact;
import com.example.wangmengjie20190719.mvp.persenter.IPersenter;

public abstract class BaseFragment extends Fragment implements IContact.IView {

private boolean isvisiable;
private boolean isinit;
public IPersenter iPersenter;

protected abstract View initlayout(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState);

protected abstract void initfbc();


@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    iPersenter = new IPersenter();
    iPersenter.OnAttch(this);
    return initlayout(inflater, container, savedInstanceState);
}

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    initfbc();
    isinit = true;
    setload();
}

@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
    super.setUserVisibleHint(isVisibleToUser);
    this.isvisiable = isVisibleToUser;
    setload();
}

public void setload() {
    if (isvisiable && isinit) {
        setlazy();
    }
}

protected abstract void setlazy();


@Override
public void onDestroy() {
    super.onDestroy();
    if (iPersenter != null) {
        iPersenter.OnDetach();
    }

}

;

}