如何通过在可绘制导航中创建可点击的TextView来实现另一个活动

Question

我已经使用粗体标注的主要部分（B）我很困惑，在哪里将OnClickListner保留在意图将TextView添加到新活动的代码上。

我想在导航抽屉中制作可点击的菜单。我有登录活动。所以我想登录可点击的意图登录活动。

public class MainActivity extends AppCompatActivity 
     implements NavigationView.OnNavigationItemSelectedListener { 

TextView t1; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
    setSupportActionBar(toolbar); 

    FloatingActionButton fab = (FloatingActionButton)  findViewById(R.id.fab); 
    fab.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) 
        .setAction("Action", null).show(); 
     } 
    }); 

    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); 
} 

@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.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); 
} 

@SuppressWarnings("StatementWithEmptyBody") 
@Override 
public boolean onNavigationItemSelected(MenuItem item) { 

    // Handle navigation view item clicks here. 
    int id = item.getItemId(); 

    if (id == R.id.nav_search_category) { 
     // Handle the camera action 
    } else if (id == R.id.nav_login) { 

     /*t1=(TextView)findViewById(R.id.nav_login);*/ 
     t1.setOnClickListener(new View.OnClickListener(){ 
      public void onClick(View v){ 
       Intent i=new Intent(MainActivity.this, LoginActivity.class); 
       startActivity(i); 
      } 
     }); 

    } else if (id == R.id.nav_register) { 

    } else if (id == R.id.nav_test) { 

    } else if (id == R.id.nav_test1) { 

    } else if (id == R.id.nav_test2) { 

    } 
    DrawerLayout drawer = (DrawerLayout)  findViewById(R.id.drawer_layout); 
    drawer.closeDrawer(GravityCompat.START); 
    return true; 
    } 
} 

Answer 1

你不需要TextView的OnClickListener。只要这样做：

else if (id == R.id.nav_login) {  
    Intent i=new Intent(MainActivity.this, LoginActivity.class); 
    startActivity(i); 
}