在NavigationDrawer中选择一个项目后，如何更改要显示的内容？
我的意思是，例如，我在NavigationDrawer中选择了LogIn选项，现在我想将XML文件中显示的内容更改为另一个。
MainActivity（LauncherActivity）Java文件：
package com.dotapps.sosgram;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import net.hockeyapp.android.UpdateManager;
import net.hockeyapp.android.CrashManager;
import net.hockeyapp.android.LoginManager;
public class LauncherActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.navbar);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
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);
LoginManager.register(this, "SECRET", LoginManager.LOGIN_MODE_EMAIL_PASSWORD);
LoginManager.verifyLogin(this, getIntent());
checkForUpdates();
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.launcher, 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);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_login) {
// Here I want to change the layout
} else if (id == R.id.nav_signup) {
} else if (id == R.id.nav_fastsos) {
} else if (id == R.id.nav_about) {
} else if (id == R.id.nav_about) {
} else if (id == R.id.nav_settings) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_exit){
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
// HockeyApp
@Override
public void onResume() {
super.onResume();
checkForCrashes();
}
@Override
public void onPause() {
super.onPause();
unregisterManagers();
}
@Override
public void onDestroy() {
super.onDestroy();
unregisterManagers();
}
private void checkForCrashes() {
CrashManager.register(this);
}
private void checkForUpdates() {
UpdateManager.register(this);
}
private void unregisterManagers() {
UpdateManager.unregister();
}
}
内容：
Google Drive-（由于我的代表很少，我必须通过云端硬盘共享它）
有人知道怎么做吗？
PD：我尝试使用
setContentView(R.layout.login)但应用程序崩溃 最佳答案
您可以用片段来做。有关更多信息，请检查此链接：
http://chrisrisner.com/Using-Fragments-with-the-Navigation-Drawer-Activity
https://www.simplifiedcoding.net/android-navigation-drawer-example-using-fragments/