Android - Share ToolBar across whole application

Question

I have 3 ToolBars that I use across my whole application

The first one is just a ToolBar with a close button.

The second one is a ToolBar with a close and delete icon.

The third one is a ToolBar with a close and home icon.

Here is my case, I use this ToolBar in many places, and I dont want to use Fragment for some reasons so I am forced to use Activity.

For usability, I created methods to handle their functions, but I am sure I can do something to make this easier as I repeat this code in each activity.

toolbar_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:minHeight="?attr/actionBarSize"
 android:background="@color/app_bg"
 >
 <RelativeLayout
 android:layout_width="match_parent"
 android:layout_height="wrap_content">
 <ImageView
 android:id="@+id/CloseImageView"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 app:srcCompat="@drawable/ic_chevron_left_white_48dp" />
 <TextView
 android:id="@+id/toolbarTitle"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="ToolBar Title"
 android:gravity="center"
 android:layout_centerVertical="true"
 android:layout_centerHorizontal="true"
 android:textSize="18sp"
 android:textColor="@color/white" />
 </RelativeLayout>
</android.support.v7.widget.Toolbar>

toolbar_layout_delete_icon.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:minHeight="?attr/actionBarSize"
 android:background="@color/app_bg"
 >
 <android.support.constraint.ConstraintLayout
 android:layout_width="match_parent"
 android:layout_height="wrap_content">
 <ImageView
 android:id="@+id/CloseImageView"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 app:srcCompat="@drawable/ic_chevron_left_white_48dp"
 tools:layout_constraintBottom_creator="1"
 app:layout_constraintBottom_toBottomOf="parent"
 tools:layout_constraintLeft_creator="1"
 app:layout_constraintLeft_toLeftOf="parent"
 app:layout_constraintTop_toTopOf="parent" />
 <TextView
 android:id="@+id/toolbarTitle"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="ToolBar Title"
 android:gravity="center"
 android:textSize="18sp"
 android:textColor="@color/white"
 tools:layout_constraintBottom_creator="1"
 android:layout_marginStart="84dp"
 app:layout_constraintBottom_toBottomOf="parent"
 tools:layout_constraintLeft_creator="1"
 android:layout_marginBottom="16dp"
 app:layout_constraintLeft_toRightOf="@+id/CloseImageView"
 android:layout_marginLeft="84dp"
 app:layout_constraintHorizontal_bias="0.54" />
 <ImageView
 android:id="@+id/DeleteImageView"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 app:srcCompat="@drawable/ic_delete_icon_36dp"
 tools:ignore="MissingConstraints"
 app:layout_constraintTop_toTopOf="parent"
 app:layout_constraintRight_toRightOf="parent"
 app:layout_constraintBottom_toBottomOf="parent"
 android:layout_marginEnd="16dp"
 android:layout_marginRight="16dp" />
 </android.support.constraint.ConstraintLayout>
</android.support.v7.widget.Toolbar>

toolbar_layout_home_icon.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:minHeight="?attr/actionBarSize"
 android:background="@color/app_bg"
 >
 <RelativeLayout
 android:layout_width="match_parent"
 android:layout_height="wrap_content">
 <ImageView
 android:id="@+id/CloseImageView"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 app:srcCompat="@drawable/ic_chevron_left_white_48dp" />
 <TextView
 android:id="@+id/toolbarTitle"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="ToolBar Title"
 android:gravity="center"
 android:layout_centerVertical="true"
 android:layout_centerHorizontal="true"
 android:textSize="18sp"
 android:textColor="@color/white" />
 <ImageView
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 app:srcCompat="@drawable/ic_home_white_36dp"
 android:layout_centerVertical="true"
 android:layout_alignParentRight="true"
 android:layout_alignParentEnd="true"
 android:layout_marginRight="15dp"
 android:layout_marginEnd="15dp"
 android:id="@+id/HomeImageView" />
 </RelativeLayout>
</android.support.v7.widget.Toolbar>

java method that handles the ToolBar :

private void setupToolbar() {
 Toolbar mytoolbar = (Toolbar) findViewById(R.id.mytoolbar);
 TextView toolbarTitle = (TextView) mytoolbar.findViewById(R.id.toolbarTitle);
 toolbarTitle.setText(getResources().getString(R.string.submit_claim));
 ImageView closeButton = (ImageView) mytoolbar.findViewById(R.id.CloseImageView);
 closeButton.setOnClickListener(v -> finish());
 ImageView HomeButton = (ImageView) mytoolbar.findViewById(R.id.HomeImageView);
 HomeButton.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 Intent mIntent = new Intent(PolicyAndContactDetailActivity.this , MainActivity.class);
 mIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
 startActivity(mIntent);
 finish();
 }
 });
 }

I need to minimize my code as much as possible, and any help with @+id names will be appreciated.

Answer 1

Create a Base Activity with ToolBar and let all your activity extend the BaseActivity like below code I've given :

BaseActivity

public class BaseActivity extends AppCompatActivity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
 setSupportActionBar(toolbar);
 }
}

Main.xml (Base activity layout)

 <android.support.v7.widget.Toolbar
 android:id="@+id/toolbar"
 android:theme="@style/toolbarTheme"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:background="@color/green"
 android:minHeight="?attr/actionBarSize" />

Now every Activity extends BaseActivity instead of AppCompatActivity or ActionBarActivity so you can get access to the Toolbar in every Activity.

Your MainActivity

public class YourActivity extends BaseActivity{ //your code }

Answer 2

Use include Tag in your activity layouts and toolbar method in separate class to reuse in all activities. change your method signature:-

private void setupToolbar(View.OnClickListener listener);