问题描述
我创建的,由抽屉式导航的机器人工作室的Android应用程序。我收到称为错误的java.lang.ClassCastException:matrialdesign.practice.com.materialdesignpractice.MaterialDesign@41cdeb78必须实现OnFragmentInteractionListener
在matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer.onAttach(navigatoin_drawer.java:90)\"
请帮我解决它,我是新来的Android导航抽屉里,这是我的主要活动
包matrialdesign.practice.com.materialdesignpractice;进口android.content.Intent;
进口android.support.v4.widget.DrawerLayout;
进口android.support.v7.app.ActionBarActivity;
进口android.os.Bundle;
进口android.support.v7.widget.Toolbar;
进口android.view.Menu;
进口android.view.MenuItem;
公共类MaterialDesign扩展ActionBarActivity
{
工具栏tool_bar_widget;
@覆盖
保护无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.layout_material_design);
tool_bar_widget =(工具栏)findViewById(R.id.toolbar);
setSupportActionBar(tool_bar_widget);
getSupportActionBar()setDisplayShowHomeEnabled(真)。
。navigatoin_drawer导航=(navigatoin_drawer)getFragmentManager()findFragmentById(R.id.fragment);
navigation.setup((DrawerLayout)findViewById(R.id.widget_drawer_layout),tool_bar_widget);
} @覆盖
公共布尔onCreateOptionsMenu(菜单菜单){
//充气菜单;如果是present这增加了项目操作栏。
。getMenuInflater()膨胀(R.menu.menu_material_design,菜单);
返回true;
} @覆盖
公共布尔onOptionsItemSelected(菜单项项){
//处理动作栏项目点击这里。操作栏会
//自动处理上点击主页/向上按钮,只要
//你在AndroidManifest.xml中指定一个父活动。
INT ID = item.getItemId(); // noinspection SimplifiableIfStatement
如果(ID == R.id.action_settings){
返回true;
}
如果(ID == R.id.custom_nav_icon)
{
意图导航=新意图(MaterialDesign.this,Navigationactivity.class);
startActivity(导航);
} 返回super.onOptionsItemSelected(项目);
}
}
这是我的导航抽屉活动:
包matrialdesign.practice.com.materialdesignpractice;进口android.app.Activity;
进口android.net.Uri;
进口android.os.Bundle;
进口android.app.Fragment;
进口android.support.v4.app.FragmentActivity;
进口android.support.v4.widget.DrawerLayout;
进口android.support.v7.app.ActionBarDrawerToggle;
进口android.support.v7.widget.Toolbar;
进口android.view.LayoutInflater;
进口android.view.View;
进口android.view.ViewGroup;
/ **
*一个简单的{@link片段}子类。
*包含此片段必须实现活动
* {@link navigatoin_drawer.OnFragmentInteractionListener}接口
*处理交互事件。
*使用{@link navigatoin_drawer#}的newInstance工厂方法
*创建该片段的一个实例。
* /
公共类navigatoin_drawer扩展片段
{
// TODO:重命名参数的参数,选择匹配的名字
//片段初始化参数,例如ARG_ITEM_NUMBER
私人ActionBarDrawerToggle mDrawer_toogle;
公共DrawerLayout mDrawer_layout;
私有静态最后弦乐ARG_PARAM1 =参数1;
私有静态最后弦乐ARG_PARAM2 =参数2; // TODO:重命名和更改类型的参数
私人字符串mParam1;
私人字符串mParam2; 私人OnFragmentInteractionListener mListener; / **
*使用此工厂方法来创建新实例
*使用提供的参数,这个片段。
*
* @参数参数1参数1。
* @参数参数2参数2。
返回:片段navigatoin_drawer的一个新实例。
* /
// TODO:重命名和更改类型和参数个数
公共静态的newInstance navigatoin_drawer(字符串参数1,字符串参数2){
navigatoin_drawer片段=新navigatoin_drawer();
捆绑ARGS =新包();
args.putString(ARG_PARAM1,参数1);
args.putString(ARG_PARAM2,参数2);
fragment.setArguments(参数);
返回片段;
} 公共navigatoin_drawer(){
//必需的空公共构造
} @覆盖
公共无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
如果(getArguments()!= NULL){
mParam1 = getArguments()的getString(ARG_PARAM1)。
mParam2 = getArguments()的getString(ARG_PARAM2)。
}
} @覆盖
公共查看onCreateView(LayoutInflater充气器,容器的ViewGroup,
捆绑savedInstanceState){
//充气的布局该片段
返回inflater.inflate(R.layout.fragment_navigatoin_drawer,集装箱,FALSE);
} // TODO:重命名方法,更新参数和勾法将UI事件
公共无效onButton pressed(URI URI){
如果(mListener!= NULL){
mListener.onFragmentInteraction(URI);
}
} @覆盖
公共无效onAttach(活动活动){
super.onAttach(活动);
尝试{
mListener =(OnFragmentInteractionListener)活性;
}赶上(抛出ClassCastException E){
抛出新ClassCastException异常(activity.toString()
+必须实现OnFragmentInteractionListener);
}
} @覆盖
公共无效onDetach(){
super.onDetach();
mListener = NULL;
} 公共无效设置(DrawerLayout drawerlayout,工具栏tool_bar)
{
mDrawer_layout = drawerlayout;
mDrawer_toogle =新ActionBarDrawerToggle(getActivity(),drawerlayout,tool_bar,R.string.draweropen,R.string.drawerclose){
@覆盖
公共无效onDrawerOpened(查看drawerView){
super.onDrawerOpened(drawerView);
} @覆盖
公共无效onDrawerClosed(查看drawerView){
super.onDrawerClosed(drawerView);
}
};
mDrawer_layout.setDrawerListener(mDrawer_toogle); } / **
*此接口必须由包含此活动的实施
*片段,以允许在该片段的相互作用来传达
*中包含的活性和潜在的其它片段
*活动。
* LT; P />
*请参阅Android的培训课< A HREF =
*http://developer.android.com/training/basics/fragments/communicating.html
*>在其他片段&所述通信; / A>了解更多信息。
* /
公共接口OnFragmentInteractionListener {
// TODO:更新参数类型和名称
公共无效onFragmentInteraction(URI URI);
}}
这是我的main_activity_layout:
< android.support.v4.widget.DrawerLayout的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@ + ID / widget_drawer_layout
的xmlns:工具=http://schemas.android.com/tools
的xmlns:程序=http://schemas.android.com/apk/res-auto
机器人:layout_width =match_parent
机器人:layout_height =match_parent>
<包括
机器人:ID =@ + ID /工具栏
布局=@布局/工具栏
机器人:layout_height =WRAP_CONTENT
机器人:layout_width =match_parent> < / - 包括GT;
< RelativeLayout的
机器人:layout_width =match_parent
机器人:layout_height =match_parent
工具:上下文=matrialdesign.practice.com.materialdesignpractice.MaterialDesign>< / RelativeLayout的> <片段
机器人:ID =@ + ID /片段
机器人:layout_width =280dp
机器人:layout_height =match_parent
机器人:layout_gravity =开始
机器人:名字=matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer
工具:布局=@布局/ fragment_navigatoin_drawer/> 应用:布局=@布局/ fragment_navigatoin_drawer/>
< /android.support.v4.widget.DrawerLayout>
这是我的navigation_drawer_xml:
<的RelativeLayout的xmlns:机器人=http://schemas.android.com/apk/res/android
的xmlns:工具=http://schemas.android.com/tools
机器人:layout_width =match_parent
机器人:layout_height =match_parent
工具:上下文=matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer> < - TODO:更新空白片段布局 - >
<的TextView
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:文字=@字符串/ hello_blank_fragment/>< / RelativeLayout的>
<的RelativeLayout的xmlns:机器人=http://schemas.android.com/apk/res/android
的xmlns:工具=http://schemas.android.com/tools
机器人:layout_width =match_parent
机器人:layout_height =match_parent
工具:上下文=matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer>< - TODO:更新空白片段布局 - >
<的TextView
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:文字=@字符串/ hello_blank_fragment/>< / RelativeLayout的>
这是我的logcat的:
16 03-11:32:27.018 9974-9974 / matrialdesign.practice.com.materialdesignpractice E / AndroidRuntime:致命异常:主要
工艺:matrialdesign.practice.com.materialdesignpractice,PID:9974
了java.lang.RuntimeException:无法启动活动ComponentInfo{matrialdesign.practice.com.materialdesignpractice/matrialdesign.practice.com.materialdesignpractice.MaterialDesign}: android.view.InflateException:二进制XML文件行#21:错误充气类片段
在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
在android.app.ActivityThread.access $ 800(ActivityThread.java:151)
在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1321)
在android.os.Handler.dispatchMessage(Handler.java:110)
在android.os.Looper.loop(Looper.java:193)
在android.app.ActivityThread.main(ActivityThread.java:5292)
在java.lang.reflect.Method.invokeNative(本机方法)
在java.lang.reflect.Method.invoke(Method.java:515)
在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:824)
在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
在dalvik.system.NativeStart.main(本机方法)
android.view.InflateException:引起二进制XML文件行#21:错误充气类片段
在android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
在android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
在android.view.LayoutInflater.inflate(LayoutInflater.java:492)
在android.view.LayoutInflater.inflate(LayoutInflater.java:397)
在android.view.LayoutInflater.inflate(LayoutInflater.java:353)
在android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:228)
在android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
在matrialdesign.practice.com.materialdesignpractice.MaterialDesign.onCreate(MaterialDesign.java:18)
在android.app.Activity.performCreate(Activity.java:5264)
在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
在android.app.ActivityThread.access $ 800(ActivityThread.java:151)
在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1321)
在android.os.Handler.dispatchMessage(Handler.java:110)
在android.os.Looper.loop(Looper.java:193)
在android.app.ActivityThread.main(ActivityThread.java:5292)
在java.lang.reflect.Method.invokeNative(本机方法)
在java.lang.reflect.Method.invoke(Method.java:515)
在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:824)
在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
在dalvik.system.NativeStart.main(本机方法)
java.lang.ClassCastException:引起matrialdesign.practice.com.materialdesignpractice.MaterialDesign@41ce3390必须实现OnFragmentInteractionListener
在matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer.onAttach(navigatoin_drawer.java:90)
在android.app.FragmentManagerImpl.moveToState(FragmentManager.java:849)
在android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1040)
在android.app.FragmentManagerImpl.addFragment(FragmentManager.java:1142)
在android.app.Activity.onCreateView(Activity.java:4819)
在android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
在android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
在android.view.LayoutInflater.inflate(LayoutInflater.java:492)
在android.view.LayoutInflater.inflate(LayoutInflater.java:397)
在android.view.LayoutInflater.inflate(LayoutInflater.java:353)
在android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:228)
在android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
在matrialdesign.practice.com.materialdesignpractice.MaterialDesign.onCreate(MaterialDesign.java:18)
在android.app.Activity.performCreate(Activity.java:5264)
在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
在android.app.ActivityThread.access $ 800(ActivityThread.java:151)
在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1321)
在android.os.Handler.dispatchMessage(Handler.java:110)
在android.os.Looper.loop(Looper.java:193)
在android.app.ActivityThread.main(ActivityThread.java:5292)
在java.lang.reflect.Method.invokeNative(本机方法)
在java.lang.reflect.Method.invoke(Method.java:515)
在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:824)
在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
在dalvik.system.NativeStart.main(本机方法)
在哪里片段定义?您正在使用中,需要一些标记库定义布局片段标记。对吧?
我认为你应该使用抽屉布局内的FrameLayout显示的抽屉里。
喜欢的东西以下可以使用
< android.support.v4.widget.DrawerLayout
的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@ + ID / drawer_layout
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:layout_below =@ + ID / main_toolbar> <! - 的主要内容视图 - > <的FrameLayout
机器人:ID =@ + ID /容器
机器人:layout_width =match_parent
机器人:layout_height =match_parent/> <! - 左导航抽屉 - > < ListView控件
机器人:ID =@ + ID / left_drawer
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:layout_gravity =左
机器人:阿尔法=75
机器人:背景=#111
机器人:choiceMode =singleChoice
机器人:分=@机器人:彩色/透明
机器人:dividerHeight =12dp
机器人:paddingTop =8DP/>
< /android.support.v4.widget.DrawerLayout>
I am creating an android application in android studio that consists of navigation drawer. I am getting an error called "java.lang.ClassCastException: matrialdesign.practice.com.materialdesignpractice.MaterialDesign@41cdeb78 must implement OnFragmentInteractionListener at matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer.onAttach(navigatoin_drawer.java:90)"
Please help me to solve it i am new to android navigation drawer this is my main activity
package matrialdesign.practice.com.materialdesignpractice;
import android.content.Intent;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
public class MaterialDesign extends ActionBarActivity
{
Toolbar tool_bar_widget;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_material_design);
tool_bar_widget = (Toolbar)findViewById(R.id.toolbar);
setSupportActionBar(tool_bar_widget);
getSupportActionBar().setDisplayShowHomeEnabled(true);
navigatoin_drawer navigation = (navigatoin_drawer)getFragmentManager().findFragmentById(R.id.fragment);
navigation.setup((DrawerLayout)findViewById(R.id.widget_drawer_layout),tool_bar_widget);
}
@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_material_design, 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;
}
if(id == R.id.custom_nav_icon)
{
Intent navigation = new Intent(MaterialDesign.this,Navigationactivity.class);
startActivity(navigation);
}
return super.onOptionsItemSelected(item);
}
}
This is my navigation drawer activity:
package matrialdesign.practice.com.materialdesignpractice;
import android.app.Activity;
import android.net.Uri;
import android.os.Bundle;
import android.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
* A simple {@link Fragment} subclass.
* Activities that contain this fragment must implement the
* {@link navigatoin_drawer.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link navigatoin_drawer#newInstance} factory method to
* create an instance of this fragment.
*/
public class navigatoin_drawer extends Fragment
{
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private ActionBarDrawerToggle mDrawer_toogle;
public DrawerLayout mDrawer_layout;
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private OnFragmentInteractionListener mListener;
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment navigatoin_drawer.
*/
// TODO: Rename and change types and number of parameters
public static navigatoin_drawer newInstance(String param1, String param2) {
navigatoin_drawer fragment = new navigatoin_drawer();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
public navigatoin_drawer() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_navigatoin_drawer, container, false);
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mListener = (OnFragmentInteractionListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement OnFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public void setup(DrawerLayout drawerlayout,Toolbar tool_bar)
{
mDrawer_layout=drawerlayout;
mDrawer_toogle = new ActionBarDrawerToggle(getActivity(),drawerlayout,tool_bar,R.string.draweropen,R.string.drawerclose){
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
};
mDrawer_layout.setDrawerListener(mDrawer_toogle);
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
public void onFragmentInteraction(Uri uri);
}
}
This is my main_activity_layout:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/widget_drawer_layout"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="@+id/toolbar"
layout="@layout/toolbar"
android:layout_height="wrap_content"
android:layout_width="match_parent">
</include>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="matrialdesign.practice.com.materialdesignpractice.MaterialDesign">
</RelativeLayout>
<fragment
android:id="@+id/fragment"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:name="matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer"
tools:layout="@layout/fragment_navigatoin_drawer" />
app:layout="@layout/fragment_navigatoin_drawer"/>
</android.support.v4.widget.DrawerLayout>
This is my navigation_drawer_xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="@string/hello_blank_fragment" />
</RelativeLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="@string/hello_blank_fragment" />
</RelativeLayout>
This is my logcat:
03-11 16:32:27.018 9974-9974/matrialdesign.practice.com.materialdesignpractice E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: matrialdesign.practice.com.materialdesignpractice, PID: 9974
java.lang.RuntimeException: Unable to start activity ComponentInfo{matrialdesign.practice.com.materialdesignpractice/matrialdesign.practice.com.materialdesignpractice.MaterialDesign}: android.view.InflateException: Binary XML file line #21: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #21: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:228)
at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
at matrialdesign.practice.com.materialdesignpractice.MaterialDesign.onCreate(MaterialDesign.java:18)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassCastException: matrialdesign.practice.com.materialdesignpractice.MaterialDesign@41ce3390 must implement OnFragmentInteractionListener
at matrialdesign.practice.com.materialdesignpractice.navigatoin_drawer.onAttach(navigatoin_drawer.java:90)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:849)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1040)
at android.app.FragmentManagerImpl.addFragment(FragmentManager.java:1142)
at android.app.Activity.onCreateView(Activity.java:4819)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:228)
at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
at matrialdesign.practice.com.materialdesignpractice.MaterialDesign.onCreate(MaterialDesign.java:18)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)
Where is the fragment defined? You are using the fragment tag in the layout which needs some tag lib definition. Right?
I think you should use a framelayout inside the drawer layout to display the drawer.
Something like following you can use
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/main_toolbar" >
<!-- The main content view -->
<FrameLayout
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<!-- Left navigation drawer -->
<ListView
android:id="@+id/left_drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="left"
android:alpha=".75"
android:background="#111"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="12dp"
android:paddingTop="8dp" />
</android.support.v4.widget.DrawerLayout>
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