自定义actionBar

    private void initActionBar() {
        final ActionBar actionBar = getSupportActionBar();
        actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
        View view = UIUtils.inflate(R.layout.layout_discover_actionbar);
        Button iv = (Button) view.findViewById(R.id.iv_dis_actionbar_back);
        iv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });
        actionBar.setCustomView(view);//自定义ActionBar布局
    }

布局代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/transparent"
    android:gravity="center_vertical"
    android:orientation="horizontal">

    <Button
        android:id="@+id/iv_dis_actionbar_back"
        android:layout_width="32dp"
        android:background="@drawable/ic_brows_back"
        android:layout_height="32dp"
        android:gravity="center_vertical"

     />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="好友圈"
        android:textColor="#ffffff"
        android:textSize="24sp" />
</LinearLayout>