摘要:当单击某个项目以显示详细数据时，MainActivityFragment 会将 Intent 传递给DetailedActivity。由于我想在两 Pane 界面中显示这些内容，因此我需要将DetailedActivity 制作为一个 fragment 。
问题:每当单击 MainActivityFragment 中的项目来启动DetailedActivityFragment 的 Intent 时，我都会收到一条错误消息，指出它无法启动或膨胀 Activity 。这里的详细Activity被命名为“test”和“testFragment”。它看起来好像指向activity_test.xml 的第25 行，即包含layout="@..."的行。
由于fragment_test.xml太长，我将其保留在了外面，但我将向任何可能想要查看它或 list 的人提供一个github链接。
我目前是 Android 世界的新手，因此需要任何帮助 =)!我项目的这个分支现在一团糟，正在尝试一些东西，所以请原谅这个困惑......
FATAL EXCEPTION: main
Process: com.rykuno.movietestapp, PID: 14281
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.rykuno.movietestapp/com.rykuno.movietestapp.Activities.test}: android.view.InflateException: Binary XML file line #25: Binary XML file line #1: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #25: Binary XML file line #1: Error inflating class fragment
at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:393)
at android.app.Activity.setContentView(Activity.java:2172)
at com.rykuno.movietestapp.Activities.test.onCreate(test.java:14)
at android.app.Activity.performCreate(Activity.java:6251)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #1: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:782)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:941)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:831)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:393)
at android.app.Activity.setContentView(Activity.java:2172)
at com.rykuno.movietestapp.Activities.test.onCreate(test.java:14)
at android.app.Activity.performCreate(Activity.java:6251)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.IllegalArgumentException: Target must not be null.
at com.squareup.picasso.RequestCreator.into(RequestCreator.java:618)
at com.squareup.picasso.RequestCreator.into(RequestCreator.java:601)
at com.rykuno.movietestapp.Activities.testFragment.setViewData(testFragment.java:100)
at com.rykuno.movietestapp.Activities.testFragment.onCreateView(testFragment.java:87)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1036)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1230)
at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1332)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2288)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:357)
at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:80)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:754)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:941)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:831)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:393)
at android.app.Activity.setContentView(Activity.java:2172)
at com.rykuno.movietestapp.Activities.test.onCreate(test.java:14)
at android.app.Activity.performCreate(Activity.java:6251)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
这是 Activity 文件 vvv 的代码
package com.rykuno.movietestapp.Activities;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import com.rykuno.movietestapp.R;
public class test extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
}
}
和 fragment
package com.rykuno.movietestapp.Activities;
import android.content.Intent;
import android.net.Uri;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
import com.rykuno.movietestapp.Adapter.TrailerAdapter;
import com.rykuno.movietestapp.BuildConfig;
import com.rykuno.movietestapp.Data.DatabaseHelper;
import com.rykuno.movietestapp.R;
import com.squareup.picasso.Picasso;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import butterknife.Bind;
import butterknife.ButterKnife;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
/**
* A placeholder fragment containing a simple view.
*/
public class testFragment extends Fragment {
private static final String MOVIEKEYS = "videoKeys";
private String movieVideoUrl;
private List<String> movieKeys = new ArrayList<>();
private String mPoster;
private String mOriginalTitle;
private String mPlot;
private String mReleaseDate;
private String mBackDrop;
private String mRating;
private boolean mFavorited = false;
private int mId;
private DatabaseHelper db;
private TrailerAdapter mTrailerAdapter;
@Bind(R.id.title_textView)
TextView mTitleTextView;
@Bind(R.id.rating_textView)
TextView mRatingTextView;
@Bind(R.id.plot_textView)
TextView mPlotTextView;
@Bind(R.id.backdrop_image)
ImageView mBackdropImageView;
@Bind(R.id.poster_imageView)
ImageView mPosterImageView;
@Bind(R.id.released_textView)
TextView mReleaseDateTextView;
@Bind(R.id.comments_button)
Button mCommentsButton;
@Bind(R.id.favorite_imageView)
ImageView mFavoritesImageView;
@Bind(R.id.trailer_gridview)
GridView mGridView;
public testFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_test, container, false);
db = new DatabaseHelper(getActivity());
ButterKnife.bind(getActivity());
extractExtras();
setViewData();
getMovieYoutubeHandle();
setClickItems();
return rootView;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
private void setViewData() {
Picasso.with(getActivity()).load("http://image.tmdb.org/t/p/w780/" + mBackDrop).into(mBackdropImageView);
Picasso.with(getActivity()).load("http://image.tmdb.org/t/p/w342/" + mPoster).into(mPosterImageView);
mTitleTextView.setText(mOriginalTitle);
mRatingTextView.setText(mRating + "/10");
mPlotTextView.setText(mPlot);
mReleaseDateTextView.setText(mReleaseDate);
}
private void extractExtras() {
mPoster = getActivity().getIntent().getStringExtra("poster");
mOriginalTitle = getActivity().getIntent().getStringExtra("title");
mPlot = getActivity().getIntent().getStringExtra("plot");
mReleaseDate = getActivity().getIntent().getStringExtra("releaseDate");
mBackDrop = getActivity().getIntent().getStringExtra("backdrop");
mRating = getActivity().getIntent().getStringExtra("rating");
mId = getActivity().getIntent().getIntExtra("id", 0);
mFavorited = getActivity().getIntent().getBooleanExtra("favorited", false);
}
private void getMovieYoutubeHandle(){
movieVideoUrl = "http://api.themoviedb.org/3/movie/"+mId+"/videos?api_key="+ BuildConfig.MY_MOVIE_DB_API_KEY;
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url(movieVideoUrl).build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String jsonData = response.body().string();
try {
movieKeys = Arrays.asList(getTrailerData(jsonData));
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
mTrailerAdapter.setListData(movieKeys);
}
});
} catch (JSONException e) {
e.printStackTrace();
}
}
});
}
private String[] getTrailerData(String jsonData) throws JSONException {
JSONObject trailerDetails = new JSONObject(jsonData);
JSONArray results = trailerDetails.getJSONArray("results");
String[] keyArray = new String[results.length()];
for(int i = 0; i<results.length(); i++){
JSONObject keyResults = results.getJSONObject(i);
String youtubeKey = keyResults.getString("key");
keyArray[i] = youtubeKey;
}
return keyArray;
}
private void setClickItems() {
//initializes gridview for trailers and onItemClicks
mTrailerAdapter = new TrailerAdapter(getActivity(), R.layout.trailer_item, movieKeys);
mGridView.setAdapter(mTrailerAdapter);
mGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String keyPosition = movieKeys.get(position).toString();
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.youtube.com/watch?v=" + keyPosition)));
}
});
//onClick launches the CommentsActivity
mCommentsButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getActivity(), CommentsActivity.class);
intent.putExtra("id", mId);
startActivity(intent);
}
});
//onClick for favorites
mFavoritesImageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
db = new DatabaseHelper(getActivity());
boolean isInserted = db.insertData(getActivity(), mId, mOriginalTitle, mPlot, mBackDrop, mPoster, mRating, mReleaseDate);
if (isInserted = true) {
mFavoritesImageView.setImageResource(android.R.drawable.star_big_on);
Log.v(DetailedMovie.class.getSimpleName(), "entry worked");
} else if (isInserted = false) {
Log.v(DetailedMovie.class.getSimpleName(), "entry failed");
}
}
});
}
@Override
public void onSaveInstanceState(Bundle outState) {
ArrayList<String> toSave = movieKeys instanceof ArrayList ?
(ArrayList<String>) movieKeys : new ArrayList<>(movieKeys);
outState.putStringArrayList(MOVIEKEYS, toSave);
super.onSaveInstanceState(outState);
}
}
以及布局文件。
activity_test.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.rykuno.movietestapp.Activities.test">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay"/>
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_test"/>
</android.support.design.widget.CoordinatorLayout>
content_test.xml
<fragment android:id="@+id/fragment1"
android:name="com.rykuno.movietestapp.Activities.testFragment"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:layout="@layout/fragment_test"/>
最佳答案
确保使用:
import android.support.v4.app.Fragment;
还要确保使用 fragment 的 Activity 扩展 FragmentActivity 而不是常规 Activity，
import android.support.v4.app.FragmentActivity;
获取FragmentActivity类。
关于java - 膨胀新 fragment 时出错，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36347772/