解决方案

Question

package com.sarham.kabs.fruity;

import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.app.ActionBarDrawerToggle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity implements AdapterView.OnItemClickListener{

    private DrawerLayout drawerLayout;
    private ListView listView;
    private String[] planets;
    private ActionBarDrawerToggle drawerListener;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        drawerLayout = (DrawerLayout)findViewById(R.id.drawerLayout);
        listView = (ListView)findViewById(R.id.drawerListView);
        planets = getResources().getStringArray(R.array.planets);
        listView.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, planets));
        listView.setOnItemClickListener(this);
        drawerListener = new ActionBarDrawerToggle(this, drawerLayout, R.mipmap.ic_drawer, R.string.drawer_open, R.string.drawer_close){
            @Override
            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                Toast.makeText(MainActivity.this,"Drawer Open", Toast.LENGTH_LONG).show();
            }

            @Override
            public void onDrawerClosed(View drawerView) {
                super.onDrawerClosed(drawerView);
                Toast.makeText(MainActivity.this, "Drawer Closed", Toast.LENGTH_LONG).show();
            }
        };
        drawerLayout.setDrawerListener(drawerListener);
    }


    @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 onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Toast.makeText(this, planets[position]+" Was selected", Toast.LENGTH_LONG).show();
        selectItem(position);
    }
    public void selectItem(int position){
        listView.setItemChecked(position, true);
        setTitle(planets[position]);
    }
    public void setTitle(String title){
        getSupportActionBar().setTitle(title);
    }
}

我在Android工作室的一个项目上工作，我试图放置导航抽屉图标但是我收到了这个错误：＆＃39;找不到符号R.mipmap.if_drawer＆＃39;，我已经尝试将它放在drawable中，但是对于符号＆＃39; R.drawable，会抛出同样的错误。 ic_drawer＆＃39;

清洁和重新制作后，我收到以下消息：

错误：（32,26）错误：没有为ActionBarDrawerToggle找到合适的构造函数（MainActivity，DrawerLayout，int，int，int）构造函数ActionBarDrawerToggle.ActionBarDrawerToggle（Activity，Toolbar，DrawerLayout，T，int，int）不适用（无法从参数实例化，因为实际和形式参数列表的长度不同）构造函数ActionBarDrawerToggle.ActionBarDrawerToggle（Activity，DrawerLayout，Toolbar，int，int）不适用（实际的参数int不能通过方法调用转换转换为工具栏）构造函数ActionBarDrawerToggle.ActionBarDrawerToggle（Activity，DrawerLayout，int，int）不适用（实际和正式的参数列表长度不同）其中T是一个类型变量： T扩展了Drawable，在构造函数ActionBarDrawerToggle（Activity，Toolbar，DrawerLayout，T，int，int）中声明的DrawerToggle

Answer 1

请清洁您的项目＆amp; 重建。

<强> Build > Clean Project Then Build > Rebuild Project

Answer 2

检查IDE投掷的错误及其提供的建议，以下是我学到的内容： ActionBarDrawerToggle有两个构造函数：

ActionBarDrawerToggle(Activity activity, DrawerLayout drawerLayout, Toolbar toolbar, int drawerOpenContentDescription, int drawerClosedContentDescription)
ActionBarDrawerToggle(Activity activity, DrawerLayout drawerLayout, int drawerOpenContentDescription, int drawerClosedContentDescription)

我使用了带有4个参数的第二个构造函数，导航抽屉工作正常，没有放置'ic_drawer'图标，而是用后箭头替换。

Answer 3

尝试rebuild您的项目。如果你有正确的名字，请仔细检查。大写字母也会计入名称。那个文件的扩展名是什么？如果以上内容无法使用此代码：

drawerListener = new ActionBarDrawerToggle(this, drawerLayout,
                 getDrawable(R.mipmap.ic_drawer),
                 getString(R.string.drawer_open),
                 getString(R.string.drawer_close)){}

Answer 4

有两个ActionBarDrawerToggle类。

documentation
v4

这是歧义的常见问题。

解决方案

从构造函数中删除第三个参数可以解决问题。

drawerListener = new ActionBarDrawerToggle(
this,
drawerLayout,
// R.drawable.ic_drawer, <== delete this argument
R.string.drawer_open,
R.string.drawer_close
) {
            @Override
            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                Toast.makeText(MainActivity.this,"Drawer Open", Toast.LENGTH_LONG).show();
            }

            @Override
            public void onDrawerClosed(View drawerView) {
                super.onDrawerClosed(drawerView);
                Toast.makeText(MainActivity.this, "Drawer Closed", Toast.LENGTH_LONG).show();
            }
        };

经过大量搜索，我有v7。

Android Studio无法找到Drawable资源

4 个答案:

解决方案