您好我在Android Studio中收到此错误: 任何人都可以帮助解决此错误.. 我已从代码中删除了几行,但所有必需的东西都在那里我相信... 提前谢谢..
错误
Process: stockquote.anirudh.com.stockquote, PID: 6263
java.lang.RuntimeException: Unable to start activity ComponentInfo{stockquote.anirudh.com.stockquote/stockquote.anirudh.com.stockquote.MainActivity}: android.view.InflateException: Binary XML file line #127: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: android.view.InflateException: Binary XML file line #127: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:228)
at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
at stockquote.anirudh.com.stockquote.MainActivity.onCreate(MainActivity.java:46)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.ClassCastException: stockquote.anirudh.com.stockquote.MainActivity@19a16f79 must implement OnFragmentInteractionListener
at stockquote.anirudh.com.stockquote.NavigationDrawerFragment.onAttach(NavigationDrawerFragment.java:103)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:903)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1206)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2159)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:297)
at android.support.v7.app.ActionBarActivity.onCreateView(ActionBarActivity.java:547)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:228)
at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
at stockquote.anirudh.com.stockquote.MainActivity.onCreate(MainActivity.java:46)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
MAINACTIVITY
public class MainActivity extends ActionBarActivity {
private Toolbar toolbar;
public final static String STOCK_SYMBOL = "com.anirudh.stockquote.STOCK";
private SharedPreferences stockSymbolsEntered;
private TableLayout stockTableScrollView;
private EditText stockSymbolEditText;
Button enterStockSymbolButton;
Button deleteStocksButton;
Button updateStocksButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.app_bar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
NavigationDrawerFragment drawerFragment = (NavigationDrawerFragment)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setup((DrawerLayout)findViewById(R.id.drawer_layout),toolbar);
stockSymbolsEntered = getSharedPreferences("stockList", MODE_PRIVATE);
stockTableScrollView = (TableLayout) findViewById(R.id.stockTableScrollView);
stockSymbolEditText = (EditText) findViewById(R.id.stockSymbolEditText);
enterStockSymbolButton = (Button) findViewById(R.id.enterStockSymbolButton);
}
@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) {
Toast.makeText(this, "Application created by Anirudh", Toast.LENGTH_LONG).show();
return true;
}
return super.onOptionsItemSelected(item);
}
}
navigationDrawerFragment.JAVA
package stockquote.anirudh.com.stockquote;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.Toolbar;
import android.util.Log;
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 NavigationDrawerFragment.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link NavigationDrawerFragment#newInstance} factory method to
* create an instance of this fragment.
*/
public class NavigationDrawerFragment extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
public static final String PREF_FILE_NAME = "testpref";
public static final String KEY_USER_LEARNED_DRAWER = "user_learned_drawer";
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private boolean mUserLearnedDrawer;
private boolean mFromSavedInstanceState;
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private OnFragmentInteractionListener mListener;
// TODO: Rename and change types and number of parameters
public static NavigationDrawerFragment newInstance(String param1, String param2)
{
NavigationDrawerFragment fragment = new NavigationDrawerFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
public NavigationDrawerFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mUserLearnedDrawer=Boolean.valueOf(readFromPreference(getActivity(),KEY_USER_LEARNED_DRAWER , "false"));
if (savedInstanceState!=null)
{
mFromSavedInstanceState = true;
}
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_navigation_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, final Toolbar toolbar) {
mDrawerLayout = drawerLayout;
mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar
, R.string.drawer_open, R.string.drawer_close) {
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
Log.d("VIVZ", "onDrawerOpened");
}
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
/**
* 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);
}
public static void saveToPreference ( Context context, String preferenceName , String preferenceValue){
SharedPreferences sharedPreference = context.getSharedPreferences( "PREF_FILE_NAME" , Context.MODE_PRIVATE);
SharedPreferences.Editor editor= sharedPreference.edit();
editor.putString(preferenceName , preferenceValue);
editor.apply();
}
public static String readFromPreference ( Context context, String preferenceName , String defaultValue){
SharedPreferences sharedPreference = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE);
return sharedPreference.getString(preferenceName,defaultValue);
}
}
fragment_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="stockquote.anirudh.com.stockquote.NavigationDrawerFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="@string/hello_blank_fragment" />
activity_main.xml中
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start">
<TableLayout
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/TableLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<include
android:id="@+id/app_bar"
layout="@layout/app_bar" />
<TableRow
android:id="@+id/tableRow1"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</TableRow>
</TableLayout>
<fragment
android:layout_width="280dp"
android:layout_height="match_parent"
android:id="@+id/fragment_navigation_drawer"
android:layout_gravity="start"
app:layout="@layout/fragment_navigation_drawer"
android:name="stockquote.anirudh.com.stockquote.NavigationDrawerFragment"
tools:layout="@layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>
答案 0 :(得分:1)
如果仔细查看日志,就会说
Caused by: java.lang.ClassCastException: stockquote.anirudh.com.stockquote.MainActivity@19a16f79 must implement OnFragmentInteractionListener
at stockquote.anirudh.com.stockquote.NavigationDrawerFragment.onAttach(NavigationDrawerFragment.java:103)
声明活动时,需要实现OnFragmentInteractionListener:
public class MainActivity extends ActionBarActivity implements OnFragmentInteractionListener {
并确保实现属于OnFragmentInteractionListener接口
的任何方法