BaseActivity for Navigation

android, navigation-drawer

Solution

You can follow BaseActivity from Google IO application. Just override `setContentView` and you dont need `setLayout`

Here is my BaseActivity

package com.vtcmobile.kqviet.activity;


public class BaseActivity extends AppCompatActivity {

private Toolbar toolbar;

private DrawerLayout drawerLayout;
private ActionBarDrawerToggle drawerToggle;
private NavigationView navigationView;
protected Context mContext;


public NavigationView getNavigationView() {
    return navigationView;
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mContext = BaseActivity.this;

}

@Override
public void setContentView(int layoutResID) {
    super.setContentView(layoutResID);
    initToolbar();
}

private void initToolbar() {
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
}

private void setUpNav() {
    drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawerToggle = new ActionBarDrawerToggle(BaseActivity.this, drawerLayout, R.string.app_name, R.string.app_name);
    drawerLayout.setDrawerListener(drawerToggle);

    getSupportActionBar().setHomeButtonEnabled(true);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setDisplayShowTitleEnabled(false);

    navigationView = (NavigationView) findViewById(R.id.navigation);


    // Setting Navigation View Item Selected Listener to handle the item
    // click of the navigation menu
    navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {

        public boolean onNavigationItemSelected(MenuItem menuItem) {

            // Checking if the item is in checked state or not, if not make
            // it in checked state
            if (menuItem.isChecked())
                menuItem.setChecked(false);
            else
                menuItem.setChecked(true);

            // Closing drawer on item click
            drawerLayout.closeDrawers();

            // Check to see which item was being clicked and perform
            // appropriate action
            Intent intent;
            switch (menuItem.getItemId()) {

            case R.id.xxxx:

                return true;



            }
            return false;
        }
    });

    // Setting the actionbarToggle to drawer layout

    // calling sync state is necessay or else your hamburger icon wont show
    // up
    drawerToggle.syncState();

}

@Override
public void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    setUpNav();

    drawerToggle.syncState();
}

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

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if (drawerToggle.onOptionsItemSelected(item))
        return true;

    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}




 }

Problem

I'm building a base activity for navigation and want something flexible so the Activity dictates to the Base Activity which layout to inflate. I have the following ``` public abstract class BaseActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { private int mLayoutRes; protected void setLayout(int layoutRes) { mLayoutRes = layoutRes; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(mLayoutRes); // Layout implements toolbar Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); if (toolbar != null){ setSupportActionBar(toolbar); } DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); // The layout implements the nav if (drawer != null){ ActionBarDrawerToggle toggle = new ActionBarDrawerToggle( this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close); drawer.setDrawerListener(toggle); toggle.syncState(); NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); navigationView.setNavigationItemSelectedListener(this); } } // Other Nav code ommitted as its too verbose } ``` Then the Layout is passed from the activity as folows ``` public class Home extends BaseActivity { private final String TAG = "Home"; @Override protected void onCreate(Bundle savedInstanceState) { super.setLayout(R.layout.activity_home); super.onCreate(savedInstanceState); // Other Activity code } } ``` Is there a better way to achieve this? Maybe setting a base layout with a content frame and inflating into that? Any suggestions would be appreciated.

Original source