Question

很抱歉，如果我的问题被公开，但我不能（或者不知道如何谷歌）找到答案。我想使用rxlifecycle-navi库来将rxjava绑定到生命周期，所以我需要扩展NaviActivity类。问题是NaviActivity类扩展了Activity，我需要为AppCompatActivity扩展toolbar。如何在不尝试更改库的源代码的情况下实现这种优雅？我发现article如何通过AppCompatDelegate执行此操作，但看起来并不灵活。我认为这是一般问题，我不能扩展2个类。

我的BaseActivity目前：

public abstract class BaseActivity extends NaviActivity implements AppCompatCallback {

private final ActivityLifecycleProvider provider = NaviLifecycle.createActivityLifecycleProvider(this);

public AppCompatDelegate delegate;

@Override
public void onCreate(final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ButterKnife.bind(this);
    delegate = AppCompatDelegate.create(this, this);
    delegate.onCreate(savedInstanceState);
}

@Override
public void onSupportActionModeStarted(ActionMode mode) {

}

@Override
public void onSupportActionModeFinished(ActionMode mode) {

}

@Nullable
@Override
public ActionMode onWindowStartingSupportActionMode(ActionMode.Callback callback) {
    return null;
}}

另一堂课：

public class CarWashesActivity extends BaseActivity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_car_washes);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    delegate.setSupportActionBar(toolbar);
    delegate.getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
            onBackPressed();
            return true;
    }
    return super.onOptionsItemSelected(item);
}}

Answer 1

简单的解决方案，在NaviAppCompatActivity包中创建自己的com.trello.navi.component。

package com.trello.navi.component;

import android.support.v7.app.AppCompatActivity;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.os.PersistableBundle;
import android.support.annotation.NonNull;
import com.trello.navi.Event;
import com.trello.navi.Listener;
import com.trello.navi.NaviComponent;
import com.trello.navi.internal.NaviEmitter;

public class NaviAppCompatActivity extends AppCompatActivity implements NaviComponent {

  private final NaviEmitter base = NaviEmitter.createActivityEmitter();

  @Override public boolean handlesEvents(Event... events) {
    return base.handlesEvents(events);
  }

  @Override public <T> void addListener(Event<T> event, Listener<T> listener) {
    base.addListener(event, listener);
  }

  @Override public <T> void removeListener(Listener<T> listener) {
    base.removeListener(listener);
  }

  @Override protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    base.onCreate(savedInstanceState);
  }

  @Override public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
    super.onCreate(savedInstanceState, persistentState);
    base.onCreate(savedInstanceState, persistentState);
  }

  @Override protected void onStart() {
    super.onStart();
    base.onStart();
  }

  @Override protected void onResume() {
    super.onResume();
    base.onResume();
  }

  @Override protected void onPause() {
    base.onPause();
    super.onPause();
  }

  @Override protected void onStop() {
    base.onStop();
    super.onStop();
  }

  @Override protected void onDestroy() {
    base.onDestroy();
    super.onDestroy();
  }

  @Override protected void onRestart() {
    super.onRestart();
    base.onRestart();
  }

  @Override protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    base.onSaveInstanceState(outState);
  }

  @Override public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) {
    super.onSaveInstanceState(outState, outPersistentState);
    base.onSaveInstanceState(outState, outPersistentState);
  }

  @Override protected void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    base.onRestoreInstanceState(savedInstanceState);
  }

  @Override
  public void onRestoreInstanceState(Bundle savedInstanceState, PersistableBundle persistentState) {
    super.onRestoreInstanceState(savedInstanceState, persistentState);
    base.onRestoreInstanceState(savedInstanceState, persistentState);
  }

  @Override protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);
    base.onNewIntent(intent);
  }

  @Override public void onBackPressed() {
    super.onBackPressed();
    base.onBackPressed();
  }

  @Override public void onAttachedToWindow() {
    super.onAttachedToWindow();
    base.onAttachedToWindow();
  }

  @Override public void onDetachedFromWindow() {
    super.onDetachedFromWindow();
    base.onDetachedFromWindow();
  }

  @Override public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    base.onConfigurationChanged(newConfig);
  }

  @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    base.onActivityResult(requestCode, resultCode, data);
  }

  @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
      @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    base.onRequestPermissionsResult(requestCode, permissions, grantResults);
  }
}

参考：
在https://github.com/trello/navi

上搜索“NaviAppCompatActivity”

Answer 2

创建AppCompatNaviActivity扩展AppCompatActivity。然后将NaviActivity中提供的所有代码添加到AppCompatNaviActivity。

现在，只要您需要扩展NaviActivity，请展开AppCompatNaviActivity，这将提供AppCompatActivity和NaviActivity的所有强大功能。

它有点破解，但希望这会帮助你。

将活动扩展到AppCompatActivity

2 个答案: