Android Navigation Drawer click Event Issue

Question

I am creating a application which contains Navigation Drawer Activity. I am loading different Fragments in my main Screen. Now when I have to call Fragment at that time it w

Answer 1

I tried to make a fragment and made a drawer here is my code:

import android.support.v4.app.FragmentManager;

import android.support.v4.app.Fragment;

import android.content.res.Configuration;

import android.support.design.widget.Snackbar;

import android.support.v4.widget.DrawerLayout;

import android.support.v7.app.ActionBarDrawerToggle;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.util.Log;

import android.view.Menu;

import android.view.MenuItem;

import android.support.v7.widget.Toolbar;

import android.support.design.widget.NavigationView;

import android.view.View;

import android.widget.LinearLayout;

import android.widget.RelativeLayout;

public class MainActivity extends AppCompatActivity implements View.OnClickListener, NavigationView.OnNavigationItemSelectedListener{

private Toolbar mToolBar;

private NavigationView mDrawer;

private ActionBarDrawerToggle mdrawerToggle;

private DrawerLayout mDrawerLayout;

private RelativeLayout digitalFrontier;

private RelativeLayout forwardThinkers;

private RelativeLayout preferedActions;

private LinearLayout innerParent;

public String viewVar;

@Override protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);


initViews();

digitalFrontier.setOnClickListener(this);

forwardThinkers.setOnClickListener(this);

preferedActions.setOnClickListener(this);

}

@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) {

// 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();

//noinspection SimplifiableIfStatement

if (id == R.id.action_settings) {

    return true;

}

return super.onOptionsItemSelected(item);

}

@Override public void onConfigurationChanged(Configuration newConfig) {

super.onConfigurationChanged(newConfig);

mdrawerToggle.onConfigurationChanged(newConfig);

}

private void initViews(){

mToolBar = (Toolbar) findViewById(R.id.app_bar);

setSupportActionBar(mToolBar);

mDrawer = (NavigationView) findViewById(R.id.main_drawer);

mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_parent);

mdrawerToggle = new ActionBarDrawerToggle(

        this,
        mDrawerLayout,
        mToolBar,
        R.string.drawer_open,
        R.string.drawer_close);

mDrawerLayout.setDrawerListener(mdrawerToggle);

// indicator based on whether the drawerlayout is in open or closed

mdrawerToggle.syncState();

digitalFrontier = (RelativeLayout) findViewById(R.id.digital_frontier);

forwardThinkers = (RelativeLayout) findViewById(R.id.forward_thinkers);

preferedActions = (RelativeLayout) findViewById(R.id.prefered_actions);

innerParent = (LinearLayout) findViewById(R.id.inner_parent);

mDrawer.setNavigationItemSelectedListener(this);

}

@Override public void onClick(View v) {

if(v.getId() == R.id.digital_frontier || v.getId() == R.id.forward_thinkers ||

        v.getId() == R.id.prefered_actions ){

    detailActivity(v);
}

}

private void detailActivity(View view){

switch (view.getId()){

    case R.id.digital_frontier:

        viewVar = "digital frontier";

        break;
    case R.id.forward_thinkers:

        viewVar = "forward thinkers";
        break;

    case R.id.prefered_actions:

        viewVar = "prefered actions";
        break;
}

Snackbar.make(mDrawerLayout, viewVar , Snackbar.LENGTH_LONG).show();

}

@Override public boolean onNavigationItemSelected(MenuItem menuItem) {

selectDrawerItem(menuItem);

return false;

}

public void selectDrawerItem(MenuItem menuItem) {

// Create a new fragment and specify the planet to show based on
// position
Fragment fragment = null;

Class fragmentClass = null;

switch(menuItem.getItemId()) {

    case R.id.agency_menu_item:

        fragmentClass = FragmentAgency.class;

        break;
}

try {
    fragment = (Fragment) fragmentClass.newInstance();
} catch (Exception e) {
    e.printStackTrace();
}

// Insert the fragment by replacing any existing fragment
FragmentManager fragmentManager = this.getSupportFragmentManager();

fragmentManager.beginTransaction().replace(R.id.fragment_content, 

fragment).commit();

// Highlight the selected item, update the title, and close the drawer
menuItem.setChecked(true);

setTitle(menuItem.getTitle());

//mDrawer.closeDrawers();

}