基础框架之BaseActivity

import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.MenuItem;
import android.view.WindowManager;

import com.trello.rxlifecycle2.LifecycleTransformer;
import com.trello.rxlifecycle2.components.support.RxAppCompatActivity;

import javax.inject.Inject;

import androidx.annotation.LayoutRes;
import androidx.annotation.Nullable;
import androidx.appcompat.widget.Toolbar;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentTransaction;

import butterknife.BindView;
import butterknife.ButterKnife;
import iptv.com.quick.LocalApplication;
import iptv.com.quick.R;
import iptv.com.quick.injector.components.ApplicationComponent;
import iptv.com.quick.utils.Logger;
import iptv.com.quick.widget.EmptyLayout;

 
public abstract class BaseActivity<T extends IBasePresenter> extends RxAppCompatActivity implements IBaseView, EmptyLayout.OnRetryListener, Handler.Callback {

    /**
     * 把 EmptyLayout 放在基类统一处理，@Nullable 表明 View 可以为 null，详细可看 ButterKnife
     * 注意，资源的ID一定要一样
     */
    @Nullable
    @BindView(R.id.empty_layout)
    protected EmptyLayout mEmptyLayout;

    /**
     * 把 Presenter提取到基类需要配合基类的initInjector() 进行注入，如果基层这个基类则必定要提供一个Presenter注入方法，
     * 该APP把所有Presenter 都是在Module 提供注入实现的， 也可以选择提供不带Presenter 的基类
     */
    @Inject
    protected T mPresenter;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getSupportActionBar().hide();//设置为隐藏ActionBar和全屏显示
        //        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            getWindow().setStatusBarColor(getResources().getColor(R.color.color_FF282C33));
        }
//        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        //getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(attachLayoutRes());
        ButterKnife.bind(this);
        initInjector();
        initViews(savedInstanceState);
        updateViews(false);
    }


    /**
     * 绑定布局文件
     *
     * @return
     */
    @LayoutRes
    protected abstract int attachLayoutRes();

    /**
     * Dagger 注入
     */
    protected abstract void initInjector();

    /**
     * 初始化视图
     *
     * @param savedInstanceState
     */
    protected abstract void initViews(Bundle savedInstanceState);

    /**
     * 接下来开始为更新视图进行从操作，如开始请求网络数据
     *
     * @param isRefresh
     */
    protected abstract void updateViews(boolean isRefresh);

    @Override
    public void showLoading() {
        if (mEmptyLayout != null) {
            mEmptyLayout.setEmptyStatus(EmptyLayout.STATUS_LOADING);
        }
    }
    @Override
    public void showLoading(int loadingIv) {
        if (mEmptyLayout != null) {
            mEmptyLayout.setEmptyStatus(loadingIv,EmptyLayout.STATUS_LOADING_IV);
        }
    }

    @Override
    public void hideLoading() {
        if (mEmptyLayout != null) {
            mEmptyLayout.hide();
        }
    }

    @Override
    public void showNetError(String msg) {
        if (mEmptyLayout != null) {
            mEmptyLayout.setEmptyStatus(EmptyLayout.STATUS_NO_NET);
            mEmptyLayout.setRetryListener(this);
        }
    }

    @Override
    public <T> LifecycleTransformer<T> bindToLife() {
        return this.<T>bindToLifecycle();
    }

    /**
     * 显示网络错误时，点击重试监听
     */
    @Override
    public void onRetry() {
        updateViews(false);
    }

    @Override
    protected void onResume() {
        super.onResume();
        Logger.i(Logger._TJ, "onResume " + getClass().getSimpleName() +"   "+  getClass().hashCode());
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (mEmptyLayout != null) mEmptyLayout.onDestroy();

        Logger.i(Logger._TJ, "onDestroy " + getClass().getSimpleName() +"   "+  getClass().hashCode());
    }

    @Override
    protected void onPause() {
        super.onPause();
        Logger.i(Logger._TJ, "onPause " + getClass().getSimpleName() +"   "+  getClass().hashCode());
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        Logger.i(Logger._TJ, "onNewIntent " + getClass().getSimpleName() +"   "+  getClass().hashCode());
    }

    @Override
    protected void onStart() {
        super.onStart();
        Logger.i(Logger._TJ, "onStart " + getClass().getSimpleName() +"   "+  getClass().hashCode());
    }

    /**
     * 获取 ApplicationComponent
     *
     * @return ApplicationComponent
     */
    protected ApplicationComponent getAppComponent() {
        return LocalApplication.getAppComponent();
    }

    /**
     * 初始化 toolbar
     * homeAsUpEnables为true时，如果toolbar没有设置navigationIcon属性，则默认显示系统默认返回按钮
     *
     * @param toolbar
     * @param homeAsUpEnable
     * @param title
     */
    protected void initToolbar(Toolbar toolbar, boolean homeAsUpEnable, String title) {
        toolbar.setTitle(title);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(homeAsUpEnable);
    }

    protected void initToolbar(Toolbar toolbar, boolean homeAsUpEnabled, int resTitle) {
        initToolbar(toolbar, homeAsUpEnabled, getString(resTitle));
    }

    /**
     * android.R.id.home 就是 navigation·home
     * 参考getSupportActionBar().setDisplayHomeAsUpEnabled(homeAsUpEnable);
     *
     * @param item
     * @return
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == android.R.id.home) {
            finish();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    /**
     * 添加 Fragment 没有Tag值，不压入回退栈
     *
     * @param containerViewId
     * @param fragment
     */
    protected void addFragment(int containerViewId, Fragment fragment) {
        FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
        fragmentTransaction.add(containerViewId, fragment);
        fragmentTransaction.commit();
    }

    /**
     * 添加 Fragment 压入回退栈
     *
     * @param containerViewId
     * @param fragment
     * @param tag
     */
    public void addFragment(int containerViewId, Fragment fragment, String tag) {
        FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
        // 设置Tag, 不然下面 findFragmentByTag(tag) 找不到
        fragmentTransaction.add(containerViewId, fragment, tag);
        fragmentTransaction.addToBackStack(tag);
        fragmentTransaction.commit();
    }

    /**
     * 替换 Fragment
     *
     * @param containerViewId
     * @param fragment
     */
    public void replaceFragment(int containerViewId, Fragment fragment) {
        FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
        fragmentTransaction.replace(containerViewId, fragment);
        fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
        fragmentTransaction.commit();
    }

    /**
     * 替换 Fragment
     *
     * @param containerViewId
     * @param fragment
     * @param tag
     */
    public void replaceFragment(int containerViewId, Fragment fragment, String tag) {
        if (getSupportFragmentManager().findFragmentByTag(tag) == null) {
            FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
            //设置Tag
            fragmentTransaction.replace(containerViewId, fragment, tag);
            fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
            // 这里也要设置tag，通过这里保存的tag找到对应的fragment
            fragmentTransaction.addToBackStack(tag);
            fragmentTransaction.commit();
            Logger.d(Logger._JN, "replaceFragment  :%s ", fragment.getClass().getSimpleName()+"保留上方fragment");

        } else {
            //存在则弹出在它上面的所有fragment,并显示对应的fragment，类似activity启动模式SingleTack
            Logger.d(Logger._JN, "replaceFragment  :%s ", fragment.getClass().getSimpleName()+"弹出在它上面的所有fragment");
            getSupportFragmentManager().popBackStackImmediate(tag, 0);
        }
    }


    /************************************* - Handler-Helper - ****************************************/
    private Handler mHandler;

    protected final boolean sendEmptyMessage(int what) {
        if (mHandler == null) {
            mHandler = new Handler(this);
        }
        return mHandler.sendEmptyMessage(what);
    }

    protected final boolean sendEmptyMessageDelayed(int what, long delayMillis) {
        if (mHandler == null) {
            mHandler = new Handler(this);
        }
        return mHandler.sendEmptyMessageDelayed(what, delayMillis);
    }

    protected final boolean sendEmptyMessageAtTime(int what, long uptimeMillis) {
        if (mHandler == null) {
            mHandler = new Handler(this);
        }
        return mHandler.sendEmptyMessageAtTime(what, uptimeMillis);
    }

    protected final void removeMessages(int what) {
        if (mHandler != null) {
            mHandler.removeMessages(what);
        }
    }

    @Override
    public boolean handleMessage(Message msg) {
        return false;
    }
}

本文地址：https://blog.csdn.net/weixin_37716758/article/details/107985863