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Navigation Graph exploration #13

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787841f
Extract MainActivity to MainFragment
Sep 28, 2019
1cb9e9b
Confirm post Runnable is no longer necessary to update toolbar title …
Sep 28, 2019
26823dd
Add Nav Component dependencies
Sep 28, 2019
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6 changes: 6 additions & 0 deletions app/build.gradle
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,12 @@ android {
}

dependencies {

def nav_version = "2.1.0"

implementation "androidx.navigation:navigation-fragment:$nav_version"
implementation "androidx.navigation:navigation-ui:$nav_version"

implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.annotation:annotation:1.1.0'
implementation 'com.google.android.material:material:1.1.0'
Expand Down
167 changes: 5 additions & 162 deletions app/src/main/java/io/anycopy/googleplusdemo/MainActivity.java
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Original file line number Diff line number Diff line change
@@ -1,175 +1,18 @@
package io.anycopy.googleplusdemo;

import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;

import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;
import androidx.viewpager.widget.ViewPager;

import com.google.android.material.bottomnavigation.BottomNavigationView;
import com.google.android.material.navigation.NavigationView;
import com.google.android.material.snackbar.Snackbar;

public class MainActivity extends AppCompatActivity {

private ViewPager viewPager;
private BottomNavigationView navigation;
private Toolbar toolbar;
private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
= new BottomNavigationView.OnNavigationItemSelectedListener() {

@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
toolbar.setTitle(item.getTitle());
switch (item.getItemId()) {
case R.id.navigation_home:
viewPager.setCurrentItem(0);
return true;
case R.id.navigation_dashboard:
viewPager.setCurrentItem(1);
return true;
case R.id.navigation_notifications:
viewPager.setCurrentItem(2);
return true;
}
return false;
}
};

@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.snack_bar, menu);
return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_show_snack_bar:
showSnackBar();
return true;
default:
return super.onOptionsItemSelected(item);
}

}

private void showSnackBar() {
Snackbar.make(navigation, "Some text", Snackbar.LENGTH_LONG).show();

}

@Override
protected void onCreate(Bundle savedInstanceState) {
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
viewPager = findViewById(R.id.view_pager);
GooglePlusFragmentPageAdapter adapter = new GooglePlusFragmentPageAdapter(getSupportFragmentManager());
viewPager.setAdapter(adapter);
viewPager.setOffscreenPageLimit(adapter.getCount() - 1);
navigation = findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
bindNavigationDrawer();
initTitle();
}

private void initTitle() {
toolbar.post(() -> toolbar.setTitle(navigation.getMenu().getItem(0).getTitle()));
}

private void bindNavigationDrawer() {


DrawerLayout drawer = findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();

NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_tool) {
showToolSnackBar();
} else if (id == R.id.nav_share) {
showShareSnackBar();
} else if (id == R.id.nav_gallery) {
showGallerySnackBar();
} else if (id == R.id.nav_send) {
showSendSnackBar();
}
DrawerLayout drawer = findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}


});
}

private void showSendSnackBar() {
Snackbar.make(navigation, "Send", Snackbar.LENGTH_SHORT).show();

}

private void showGallerySnackBar() {
Snackbar.make(navigation, "Gallery", Snackbar.LENGTH_SHORT).show();

}

private void showToolSnackBar() {
Snackbar.make(navigation, "Tool", Snackbar.LENGTH_SHORT).show();
}

private void showShareSnackBar() {
Snackbar.make(navigation, "Share", Snackbar.LENGTH_SHORT).show();
}

public void onFabClicked(View view) {
showShareSnackBar();
}


private static class GooglePlusFragmentPageAdapter extends FragmentPagerAdapter {


public GooglePlusFragmentPageAdapter(FragmentManager fm) {
super(fm);
}

@NonNull
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return HomeFragment.newInstance(1);
case 1:
return DashboardFragment.newInstance("Tony");
case 2:
return NotificationFragment.newInstance();
default:
throw new RuntimeException("Not supported");
}
}

@Override
public int getCount() {
return 3;
}
getSupportFragmentManager().beginTransaction()
.replace(R.id.fl_layout, new MainFragment())
.commitNow();
}
}
187 changes: 187 additions & 0 deletions app/src/main/java/io/anycopy/googleplusdemo/MainFragment.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,187 @@
package io.anycopy.googleplusdemo;

import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;
import androidx.viewpager.widget.ViewPager;

import com.google.android.material.bottomnavigation.BottomNavigationView;
import com.google.android.material.navigation.NavigationView;
import com.google.android.material.snackbar.Snackbar;

public class MainFragment extends Fragment implements BottomNavigationView.OnNavigationItemSelectedListener {

private ViewPager viewPager;
private BottomNavigationView navigation;
private Toolbar toolbar;

private DrawerLayout drawer;
private NavigationView navigationView;

@Override
public void onAttach(@NonNull Context context) {
super.onAttach(context);
setHasOptionsMenu(true);
}

@Override
public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.snack_bar, menu);
}

@SuppressWarnings("SwitchStatementWithTooFewBranches")
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_show_snack_bar:
showSnackBar();
return true;
default:
return super.onOptionsItemSelected(item);
}

}

private void showSnackBar() {
Snackbar.make(navigation, "Some text", Snackbar.LENGTH_LONG).show();

}

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_main, container, false);
}

@Override
public void onViewCreated(@NonNull View rootView, @Nullable Bundle savedInstanceState) {
super.onViewCreated(rootView, savedInstanceState);
toolbar = rootView.findViewById(R.id.toolbar);
viewPager = rootView.findViewById(R.id.view_pager);
drawer = rootView.findViewById(R.id.drawer_layout);
navigationView = rootView.findViewById(R.id.nav_view);
drawer = rootView.findViewById(R.id.drawer_layout);
rootView.findViewById(R.id.floating_action_button).setOnClickListener(view -> onFabClicked());
GooglePlusFragmentPageAdapter adapter = new GooglePlusFragmentPageAdapter(getChildFragmentManager());
viewPager.setAdapter(adapter);
viewPager.setOffscreenPageLimit(adapter.getCount() - 1);
navigation = rootView.findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(this);
bindNavigationDrawer();
initTitle();
}


private void initTitle() {
toolbar.setTitle(navigation.getMenu().getItem(0).getTitle());
}

private void bindNavigationDrawer() {


ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
requireActivity(), drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();

navigationView.setNavigationItemSelectedListener(item -> {
// Handle navigation rootView item clicks here.
int id = item.getItemId();
if (id == R.id.nav_tool) {
showToolSnackBar();
} else if (id == R.id.nav_share) {
showShareSnackBar();
} else if (id == R.id.nav_gallery) {
showGallerySnackBar();
} else if (id == R.id.nav_send) {
showSendSnackBar();
}
drawer.closeDrawer(GravityCompat.START);
return true;
});
}

private void showSendSnackBar() {
Snackbar.make(navigation, "Send", Snackbar.LENGTH_SHORT).show();

}

private void showGallerySnackBar() {
Snackbar.make(navigation, "Gallery", Snackbar.LENGTH_SHORT).show();

}

private void showToolSnackBar() {
Snackbar.make(navigation, "Tool", Snackbar.LENGTH_SHORT).show();
}

private void showShareSnackBar() {
Snackbar.make(navigation, "Share", Snackbar.LENGTH_SHORT).show();
}

public void onFabClicked() {
showShareSnackBar();
}


private static class GooglePlusFragmentPageAdapter extends FragmentPagerAdapter {


public GooglePlusFragmentPageAdapter(FragmentManager fm) {
super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
}

@NonNull
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return HomeFragment.newInstance(1);
case 1:
return DashboardFragment.newInstance("Tony");
case 2:
return NotificationFragment.newInstance();
default:
throw new RuntimeException("Not supported");
}
}

@Override
public int getCount() {
return 3;
}
}

@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
toolbar.setTitle(item.getTitle());
switch (item.getItemId()) {
case R.id.navigation_home:
viewPager.setCurrentItem(0);
return true;
case R.id.navigation_dashboard:
viewPager.setCurrentItem(1);
return true;
case R.id.navigation_notifications:
viewPager.setCurrentItem(2);
return true;
}
return false;
}
}
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