Ошибка при наполнении класса android.support.v4.widget.Toolbar

Question

Я имею эту ошибку

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.justedhak.www.i/com.je.www.i.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class android.support.v4.widget.Toolbar 
      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059) 
      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 
      at android.app.ActivityThread.access$600(ActivityThread.java:130) 
      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 
      at android.os.Handler.dispatchMessage(Handler.java:99) 
      at android.os.Looper.loop(Looper.java:137) 
      at android.app.ActivityThread.main(ActivityThread.java:4745) 
      at java.lang.reflect.Method.invokeNative(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:511) 
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
      at dalvik.system.NativeStart.main(Native Method) 
    Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class android.support.v4.widget.Toolbar 
      at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698) 
      at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
      at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
      at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
      at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
      at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:255) 
      at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109) 
      at com.justedhak.www.i.MainActivity.onCreate(MainActivity.java:14) 
      at android.app.Activity.performCreate(Activity.java:5008) 
      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 
      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 
            at android.app.ActivityThread.access$600(ActivityThread.java:130) 
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 
            at android.os.Handler.dispatchMessage(Handler.java:99) 
            at android.os.Looper.loop(Looper.java:137) 
            at android.app.ActivityThread.main(ActivityThread.java:4745) 
            at java.lang.reflect.Method.invokeNative(Native Method) 
            at java.lang.reflect.Method.invoke(Method.java:511) 
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
            at dalvik.system.NativeStart.main(Native Method) 
    Caused by: java.lang.ClassNotFoundException: android.support.v4.widget.Toolbar 

это мой код

public class MainActivity extends AppCompatActivity { 

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

    @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; 
    } 

    private void initToolbars() { 

     Toolbar toolbarBottom = (Toolbar) findViewById(R.id.toolbar); 
     toolbarBottom.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() { 
      @Override 
      public boolean onMenuItemClick(MenuItem item) { 
       switch(item.getItemId()){ 
        case R.id.action_settings: 
         // TODO 
         break; 
        // TODO: Other cases 
       } 
       return true; 
      } 
     }); 
     toolbarBottom.inflateMenu(R.menu.menu_main); 

    } 
    @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); 
    } 
} 

Этот XML

<android.support.v7.widget.Toolbar 
    android:id="@+id/drawer_layout" 
    android:layout_height="wrap_content" 
    android:layout_width="match_parent" 
    android:layout_alignParentBottom="true" 
    android:minHeight="?attr/actionBarSize" /> 

это gradl e

dependencies { 
    compile fileTree(dir: 'libs', include: ['*.jar']) 
    compile 'com.android.support:appcompat-v7:23.0.1' 
} 

Answer 1

Панель инструментов не является частью виртуальных библиотек v4, она находится в версии 7.

Так изменить XML в:

<android.support.v7.widget.Toolbar 
    android:id="@+id/toolbar" 
    android:layout_width="match_parent" 
    android:layout_height="?attr/actionBarSize" />