我有以下代码，我正在尝试制作一个应用程序，从网站获取足球运动员的照片和姓名，然后放置一张带有 4 种可能答案的图像，用户必须猜测它是谁。但是，在我的设备上运行它时它崩溃了
我的代码：
package com.example.a82guessthecelebrity;
import android.annotation.SuppressLint;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Objects;
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MainActivity extends AppCompatActivity {
ArrayList<String> footballerURLs = new ArrayList<String>();
ArrayList<String> footballerNames = new ArrayList<String>();
int chosenPlayer = 0;
String[] answers = new String[4];
int locationOfCorrectAnswer = 0;
ImageView imageView;
Button button0;
Button button1;
Button button2;
Button button3;
int score;
int questionsAsked;
public void celebChosen(View view) {
if (view.getTag().toString().equals(Integer.toString(locationOfCorrectAnswer))) {
Toast.makeText(getApplicationContext(),"Correct!",Toast.LENGTH_SHORT).show();
score ++;
} else {
Toast.makeText(getApplicationContext(),"Wrong! It was " + footballerNames.get(chosenPlayer),Toast.LENGTH_SHORT).show();
}
questionsAsked ++;
newQuestion();
}
public class ImageDownloader extends AsyncTask<String, Void, Bitmap> {
@Override
protected Bitmap doInBackground(String... urls) {
try {
URL url = new URL(urls[0]);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream inputStream = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(inputStream);
return myBitmap;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
public class DownloadTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
String result = "";
URL url;
HttpURLConnection urlConnection = null;
try {
url = new URL(urls[0]);
urlConnection = (HttpURLConnection) url.openConnection();
InputStream in = urlConnection.getInputStream();
InputStreamReader reader = new InputStreamReader(in);
int data = reader.read();
while (data != -1) {
char current = (char) data;
result += current;
data = reader.read();
}
return result;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
public void newQuestion() {
try {
Random rand = new Random();
chosenPlayer = rand.nextInt(footballerURLs.size());
ImageDownloader imageTask = new ImageDownloader();
Bitmap playerImage = imageTask.execute(footballerURLs.get(chosenPlayer)).get();
imageView.setImageBitmap(playerImage);
locationOfCorrectAnswer = rand.nextInt(4);
int incorrectAnswerLocation;
for (int i = 0; i < 4; i++) {
if (i == locationOfCorrectAnswer) {
answers[i] = footballerNames.get(chosenPlayer);
} else {
incorrectAnswerLocation = rand.nextInt(footballerURLs.size());
while (incorrectAnswerLocation == chosenPlayer) {
incorrectAnswerLocation = rand.nextInt(footballerURLs.size());
}
answers[i] = footballerNames.get(incorrectAnswerLocation);
}
}
button0.setText(answers[0]);
button1.setText(answers[1]);
button2.setText(answers[2]);
button3.setText(answers[3]);
} catch (Exception e) {
e.printStackTrace();
}
}
@SuppressLint("MissingInflatedId")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = findViewById(R.id.imageView);
button0 = findViewById(R.id.button0);
button1 = findViewById(R.id.button1);
button2 = findViewById(R.id.button2);
button3 = findViewById(R.id.button3);
DownloadTask task = new DownloadTask();
String result = null;
try {
result = task.execute("https://bleacherreport.com/articles/705591-the-100-best-soccer-players-of-all-time").get();
String[] splitResult = result.split("<div class=\"organism contentStream slide\" id=\"slide68\">");
Pattern p = Pattern.compile("<img alt=(.*?)>");
Matcher m = p.matcher(splitResult[1]);
while (m.find()) {
Pattern p2 = Pattern.compile("src=\"(.*?)\"");
Matcher m2 = p2.matcher(m.group(1));
while (m2.find()) {
footballerURLs.add(m2.group(1));
}
}
Pattern p3 = Pattern.compile("<div class=\"organism contentStream slide\"(.*?)/h2>");
Matcher m3 = p3.matcher(splitResult[1]);
while (m3.find()) {
Pattern p4 = Pattern.compile("<h2>(.*?)<");
Matcher m4 = p4.matcher(Objects.requireNonNull(m3.group(1)));
while (m4.find()) {
String footballerName = m4.group(1).trim();
footballerName = footballerName.replaceAll("[0-9]", "");
footballerName = footballerName.replaceAll("\\. ", "");
footballerNames.add(footballerName);
}
}
footballerNames.remove(1);
newQuestion();
} catch (Exception e) {
e.printStackTrace();
}
}
}
错误：
03/25 16:10:46: Launching 'app' on OPPO CPH2219.
Install successfully finished in 264 ms.
$ adb shell am start -n "com.example.a82guessthecelebrity/com.example.a82guessthecelebrity.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 7770 on device 'oppo-cph2219-e91b6bde'.
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/essthecelebrit: Late-enabling -Xcheck:jni
E/essthecelebrit: Unknown bits set in runtime_flags: 0x40000000
D/ProcessState: Binder ioctl to enable oneway spam detection failed: Invalid argument
I/OneTrace: Mark active for pid=7770? true
D/cutils-dev: otrace_set_tracing_enabled? true
D/cutils-dev: properties changed in otrace_seq_number_changed!
W/re-initialized>: type=1400 audit(0.0:18700): avc: granted { execute } for path="/data/data/com.example.a82guessthecelebrity/code_cache/startup_agents/69880af5-agent.so" dev="dm-29" ino=453160 scontext=u:r:untrusted_app:s0:c91,c256,c512,c768 tcontext=u:object_r:app_data_file:s0:c91,c256,c512,c768 tclass=file app=com.example.a82guessthecelebrity
V/studio.deploy: Startup agent attached to VM
V/studio.deploy: No existing instrumentation found. Loading instrumentation from instruments-6b5afa68.jar
W/essthecelebrit: DexFile /data/data/com.example.a82guessthecelebrity/code_cache/.studio/instruments-6b5afa68.jar is in boot class path but is not in a known location
V/studio.deploy: Applying transforms with cached classes
W/essthecelebrit: Redefining intrinsic method java.lang.Thread java.lang.Thread.currentThread(). This may cause the unexpected use of the original definition of java.lang.Thread java.lang.Thread.currentThread()in methods that have already been compiled.
W/essthecelebrit: Redefining intrinsic method boolean java.lang.Thread.interrupted(). This may cause the unexpected use of the original definition of boolean java.lang.Thread.interrupted()in methods that have already been compiled.
D/CompatibilityChangeReporter: Compat change id reported: 171979766; UID 10091; state: ENABLED
I/oplus.android.OplusFrameworkFactoryImpl: get feature:IOplusAutoResolutionFeature
I/oplus.android.OplusFrameworkFactoryImpl: getOplusAutoResolutionFeature
D/CompactWindowAppManager: initCompactApplicationInfo
I/OplusFeatureCache: Milliseconds spent on init(): 37
D/LoadedApk: mApplicationInfo overrideDisplayId:null
V/GraphicsEnvironment: ANGLE Developer option for 'com.example.a82guessthecelebrity' set to: 'default'
V/GraphicsEnvironment: Neither updatable production driver nor prerelease driver is supported.
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
E/MultiApp.Impl: OplusMultiAppImpl
D/AppCompatDelegate: Checking for metadata for AppLocalesMetadataHolderService : Service not found
I/oplus.android.OplusFrameworkFactoryImpl: Unknow feature:IOplusTextViewRTLUtilForUG
W/essthecelebrit: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (unsupported, reflection, allowed)
W/essthecelebrit: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (unsupported, reflection, allowed)
E/OplusCustomizeRestrictionManager: sInstance is null, start a new sInstance
I/Quality: ActivityThread: viewInflate delay 141 com.example.a82guessthecelebrity:layout/activity_main 7770
W/System: A resource failed to call close.
I/essthecelebrit: Thread[5,tid=7776,WaitingInMainSignalCatcherLoop,Thread*=0xb400007e2fc8cc00,peer=0x12d01fe0,"Signal Catcher"]: reacting to signal 3
I/essthecelebrit:
I/essthecelebrit: Waiting for a blocking GC ObjectsAllocated
I/essthecelebrit: WaitForGcToComplete blocked ObjectsAllocated on Background for 17.625ms
I/essthecelebrit: Wrote stack traces to tombstoned
I/essthecelebrit: Thread[5,tid=7776,WaitingInMainSignalCatcherLoop,Thread*=0xb400007e2fc8cc00,peer=0x12d01fe0,"Signal Catcher"]: reacting to signal 3
I/essthecelebrit:
I/essthecelebrit: Waiting for a blocking GC ObjectsAllocated
I/essthecelebrit: WaitForGcToComplete blocked ObjectsAllocated on Background for 28.916ms
I/essthecelebrit: Wrote stack traces to tombstoned
请帮忙
在模拟器上运行app没问题，但是在oppo上运行就崩溃了