error: incompatible types: int cannot be converted to Toolbar R.drawable.ic_drawer & cannot find symbol "mDrawerToggle = new ActionBarDrawerToggle("

Question

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import androidx.multidex.MultiDex;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.drawerlayout.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;

并出现此错误“错误：类型不兼容：无法将 int 转换为工具栏 R.drawable.ic_drawer 并且无法找到符号“mDrawerToggle = new ActionBarDrawerToggle("

mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerToggle = new ActionBarDrawerToggle(
        this,                  /* host Activity */
        mDrawerLayout,         /* DrawerLayout object */
        R.drawable.ic_drawer,  /* nav drawer icon to replace 'Up' caret */
        R.string.drawer_open,  /* "open drawer" description */
        R.string.drawer_close  /* "close drawer" description */
        ) {

Answer 1

您正在使用这个 constructor:

ActionBarDrawerToggle(Activity activity,
          DrawerLayout drawerLayout, 
          Toolbar toolbar, 
          int openDrawerContentDescRes, 
          int closeDrawerContentDescRes)

问题在于

R.drawable.ic_drawer,  /* nav drawer icon to replace 'Up' caret */

你必须通过Toolbar。

error: incompatible types: int cannot be converted to Toolbar R.drawable.ic_drawer & cannot find symbol "mDrawerToggle = new ActionBarDrawerToggle("

error: incompatible types: int cannot be converted to Toolbar R.drawable.ic_drawer & cannot find symbol "mDrawerToggle = new ActionBarDrawerToggle("

android

android-drawable

android-studio

androidx