Android应用更换Dashboard为主活动后闪屏结束后崩溃求助

算力阿峰

2026-8-21

应用跳转至DashboardActivity时崩溃问题

原本RadioActivity运行完全正常，将DashboardActivity设为主活动后，用户可通过Dashboard按钮跳转至RadioActivity，但现在应用在闪屏页结束进入引导页后，跳转至DashboardActivity时持续崩溃。

相关代码

SplashScreen

private static int SPLASH_TIMER = 8000;

ImageView backgroundImage;
ImageView theLogo;
TextView poweredByLine;

Animation sideAnim, bottomAnim;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_splash_screen);
    getWindow().setFlags(WindowManager.LayoutParams.FLAGS_CHANGED,WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
    setContentView(R.layout.activity_splash_screen);


    backgroundImage = findViewById(R.id.background_image);
    theLogo = findViewById(R.id.the_Logo);
    poweredByLine = findViewById(R.id.powered_by_line);

    sideAnim = AnimationUtils.loadAnimation(this, R.anim.side_anim);
    bottomAnim = AnimationUtils.loadAnimation(this, R.anim.bottom_anim);

    backgroundImage.setAnimation(sideAnim);
    theLogo.setAnimation(sideAnim);
    poweredByLine.setAnimation(bottomAnim);


    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            Intent intent = new Intent(getApplicationContext(), OnBoarding.class);
            startActivity(intent);
            finish();
        }
    },SPLASH_TIMER);
}

OnBoarding

CardView nextCard;
LinearLayout dotsLayout;
ViewPager viewPager;

TextView[] dots;
int currentPosition;
SaveState saveState ;

@RequiresApi(api = Build.VERSION_CODES.M)
@Override
protected void onCreate(Bundle savedInstanceState) {
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_onboarding);

    nextCard = findViewById(R.id.nextCard);
    dotsLayout = findViewById(R.id.dotsLayout);
    viewPager = findViewById(R.id.slider);
    dotsFunction(0);
    saveState = new SaveState(OnBoarding.this,"OB");
    if (saveState.getState() == 1){
        Intent i = new Intent(OnBoarding.this,DashboardActivity.class);
        startActivity(i);
        finish();
    }

    OnBoardingAdapter adapter = new OnBoardingAdapter(this);
    viewPager.setAdapter(adapter);
    nextCard.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            viewPager.setCurrentItem(currentPosition+1,true);
        }
    });
    viewPager.setOnPageChangeListener(onPageChangeListener);
}

@RequiresApi(api = Build.VERSION_CODES.M)
private void dotsFunction(int pos){
    dots = new TextView[4];
    dotsLayout.removeAllViews();

    for (int i = 0; i < dots.length ; i++){
        dots[i] = new TextView(this);
        dots[i].setText(Html.fromHtml("•"));
        dots[i].setTextColor(getColor(R.color.white));
        dots[i].setTextSize(30);
        dotsLayout.addView(dots[i]);
    }

    if (dots.length > 0){
        dots[pos].setTextColor(getColor(R.color.teal_700));
        dots[pos].setTextSize(40);
    }
}

ViewPager.OnPageChangeListener onPageChangeListener = new ViewPager.OnPageChangeListener() {
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}

    @RequiresApi(api = Build.VERSION_CODES.M)
    @Override
    public void onPageSelected(int position) {
        dotsFunction(position);
        currentPosition = position;
        if (currentPosition <= 2){
            nextCard.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    viewPager.setCurrentItem(currentPosition+1);
                }
            });
        }else{
            nextCard.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    saveState.setState(1);
                    Intent i = new Intent(OnBoarding.this, DashboardActivity.class);
                    startActivity(i);
                    finish();
                }
            });
        }
    }

    @Override
    public void onPageScrollStateChanged(int state) {}
};

DashboardActivity

public class DashboardActivity extends AppCompatActivity implements View.OnClickListener{
   private ImageView imageViewWebsite,imageViewEvents,imageViewLive,
           imageViewVideos,imageViewBranches,imageViewDonate,
           imageViewEkuwe,imageViewRadio,imageViewAudio;

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

       imageViewWebsite = (ImageView) findViewById(R.id.website_card);
       imageViewEvents = (ImageView) findViewById(R.id.event_card);
       imageViewLive = (ImageView) findViewById(R.id.live_card);
       imageViewVideos = (ImageView) findViewById(R.id.videos_card);
       imageViewBranches = (ImageView) findViewById(R.id.branches_card);
       imageViewDonate = (ImageView) findViewById(R.id.donate_card);
       imageViewEkuwe = (ImageView) findViewById(R.id.ekuwe_card);
       imageViewRadio = (ImageView) findViewById(R.id.radio_card);
       imageViewAudio = (ImageView) findViewById(R.id.audio_card);

       imageViewWebsite.setOnClickListener(this);
       imageViewEvents.setOnClickListener(this);
       imageViewLive.setOnClickListener(this);
       imageViewVideos.setOnClickListener(this);
       imageViewBranches.setOnClickListener(this);
       imageViewDonate.setOnClickListener(this);
       imageViewEkuwe.setOnClickListener(this);
       imageViewRadio.setOnClickListener(this);
       imageViewAudio.setOnClickListener(this);
   }

   @Override
   public void onClick(View v) {
       Intent i;

       switch (v.getId()){
           case R.id.website_card : i = new Intent(this, WebsiteActivity.class);startActivity(i); break;
           case R.id.event_card : i = new Intent(this,EventsActivity.class);startActivity(i); break;
           case R.id.live_card : i = new Intent(this, LiveActivity.class);startActivity(i); break;
           case R.id.videos_card : i = new Intent(this, VideoActivity.class);startActivity(i); break;
           case R.id.branches_card : i = new Intent(this,BranchesActivity.class);startActivity(i); break;
           case R.id.donate_card : i = new Intent(this, DonateActivity.class);startActivity(i); break;
           case R.id.ekuwe_card : i = new Intent(this,EkuweActivity.class);startActivity(i); break;
           case R.id.radio_card : i = new Intent(this,RadioActivity.class);startActivity(i); break;
           case R.id.audio_card : i = new Intent(this,AudioActivity.class);startActivity(i); break;
           default:break;
       }
   }
}

RadioActivity

public class RadioActivity extends AppCompatActivity {

    private TextView nowPlaying;
    private ImageView playStop;
    private BroadcastReceiver broadcastReceiver;
    private String nowPlayingData = "";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_radio);
        playStop = findViewById(R.id.playStopBtn);
        nowPlaying = findViewById(R.id.radioStationNowPlaying);
        setIsPlaying(false);
        processPhoneListenerPermission();
        broadcastReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                TelephonyManager tm = (TelephonyManager) context.getSystemService(Service.TELEPHONY_SERVICE);
                if (tm != null) {
                    if (tm.getCallState() == TelephonyManager.CALL_STATE_RINGING) {
                        if (getIsPlaying()) {
                            stop();
                        }
                        System.exit(0);
                    }
                }
            }
        };
        IntentFilter filter = new IntentFilter();
        filter.addAction("android.intent.action.PHONE_STATE");
        registerReceiver(broadcastReceiver, filter);
        loadNowPlaying();
        playStop.setOnClickListener(view -> {
            if (isNetworkAvailable()) {
                if (getIsPlaying()) {
                    stop();
                } else {
                    play();
                }
            } else {
                Toast.makeText(getApplicationContext(), "No internet", Toast.LENGTH_LONG).show();
            }
        });
    }

    private void loadNowPlaying() {
        Thread t = new Thread() {
            public void run() {
                try {
                    while (!isInterrupted()) {
                        runOnUiThread(() -> reloadShoutCastInfo());
                        Thread.sleep(20000);
                    }
                } catch (InterruptedException ignored) {}
            }
        };
        t.start();
    }

    private void reloadShoutCastInfo() {
        if (isNetworkAvailable()) {
            AsyncTaskRunner runner = new AsyncTaskRunner();
            runner.execute();
        }
    }

    @SuppressLint("StaticFieldLeak")
    private class AsyncTaskRunner extends AsyncTask<String, String, String> {
        @Override
        protected String doInBackground(String... params) {
            FFmpegMediaMetadataRetriever mmr = new FFmpegMediaMetadataRetriever();
            mmr.setDataSource(STREAMING_URL);
            nowPlayingData = mmr.extractMetadata(FFmpegMediaMetadataRetriever.METADATA_KEY_ICY_METADATA).replaceAll("StreamTitle", "").replaceAll("[=,';]+", "");
            mmr.release();
            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            nowPlaying.setText(nowPlayingData);
        }
    }

    private void processPhoneListenerPermission() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{Manifest.permission.READ_PHONE_STATE}, 121);
        }
    }

    public boolean isNetworkAvailable() {
        ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = null;
        if (cm != null) {
            networkInfo = cm.getActiveNetworkInfo();
        }
        return networkInfo != null && networkInfo.isConnectedOrConnecting();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (requestCode == 121) {
            if (!(grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
                Toast.makeText(getApplicationContext(), "Permission not granted.\nWe can't pause music when phone ringing.", Toast.LENGTH_LONG).show();
            }
        }
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }

    @Override
    public void onBackPressed() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage("Are you sure you want to exit?")
                .setCancelable(false)
                .setPositiveButton("Yes", (dialog, id) -> {
                    if (getIsPlaying()) {
                        stop();
                    }
                    System.exit(0);
                })
                .setNegativeButton("No", (dialog, id) -> dialog.cancel());
        AlertDialog alert = builder.create();
        alert.show();
    }

    private void setIsPlaying(boolean status) {
        SharedPreferences.Editor editor = getApplicationContext().getSharedPreferences("isPlaying", MODE_PRIVATE).edit();
        editor.putBoolean("isPlaying", status);
        editor.apply();
    }

    private boolean getIsPlaying() {
        SharedPreferences prefs = getApplicationContext().getSharedPreferences("isPlaying", MODE_PRIVATE);
        return prefs.getBoolean("isPlaying", false);
    }

    private void play() {
        setIsPlaying(true);
        Intent servicePlayIntent = new Intent(this, MyService.class);
        servicePlayIntent.putExtra("playStop", "play");
        startService(servicePlayIntent);
        playStop.setImageResource(R.drawable.ic_pause);
        Toast.makeText(getApplicationContext(), "Loading ...", Toast.LENGTH_LONG).show();
    }

    private void stop() {
        setIsPlaying(false);
        Intent serviceStopIntent = new Intent(this, MyService.class);
        serviceStopIntent.putExtra("playStop", "stop");
        startService(serviceStopIntent);
        playStop.setImageResource(R.drawable.ic_play);
        Toast.makeText(getApplicationContext(), "Stop Radio...", Toast.LENGTH_LONG).show();
    }

    @Override
    protected void onStop() {
        super.onStop();
    }

    @Override
    protected void onDestroy() {
        stopService(new Intent(getApplicationContext(), MyService.class));
        unregisterReceiver(broadcastReceiver);
        super.onDestroy();
    }
}

OnBoardingAdapter

public class OnBoardingAdapter extends PagerAdapter {

    Context context;
    LayoutInflater layoutInflater;

    public OnBoardingAdapter(Context context) {
        this.context = context;
    }

    int titles[] = {
            R.string.title1,
            R.string.title2,
            R.string.title3,
            R.string.title4
    };

    int subtitles[] = {
            R.string.subtitle1,
            R.string.subtitle2,
            R.string.subtitle3,
            R.string.subtitle4
    };

    int images[] = {
            R.drawable.on_boarding_vector_1,
            R.drawable.on_boarding_vector_2,
            R.drawable.on_boarding_vector_3,
            R.drawable.on_boarding_vector_4
    };

    int bg[] = {
            R.drawable.bg1,
            R.drawable.bg2,
            R.drawable.bg3,
            R.drawable.bg4
    };

    @Override
    public int getCount() {
        return titles.length;
    }

    @Override
    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
        return view == (ConstraintLayout) object;
    }

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
        layoutInflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
        View v = layoutInflater.inflate(R.layout.slide,container,false);

        ImageView image = v.findViewById(R.id.slideImg);
        TextView title = v.findViewById(R.id.sliderTitle);
        TextView subtitle = v.findViewById(R.id.sliderSubtitle);
        ConstraintLayout layout = v.findViewById(R.id.sliderLayout);

        image.setImageResource(images[position]);
        title.setText(titles[position]);
        subtitle.setText(subtitles[position]);
        layout.setBackgroundResource(bg[position]);

        container.addView(v);
        return v;
    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
        container.removeView((ConstraintLayout) object);
    }
}

崩溃排查与修复方案

1. 修复SplashScreen重复加载布局问题

SplashScreen的onCreate中连续调用了两次setContentView(R.layout.activity_splash_screen);，这会导致视图初始化异常，删除其中一次即可。

2. 修正引导页数量不匹配问题

你提到引导页是3个，但OnBoardingAdapter中数组长度为4，同时dotsFunction创建了4个指示器点，页面切换逻辑中判断currentPosition <= 2，会引发索引越界：

将OnBoardingAdapter中的titles、subtitles、images、bg数组元素数量改为3个
修改dotsFunction中的dots = new TextView[3];，确保指示器数量与页面数量一致

3. 检查SaveState类实现

SaveState负责保存引导页状态，若SharedPreferences读写逻辑错误会导致跳转异常，确保其实现正确：

public class SaveState {
    private SharedPreferences prefs;
    private String key;

    public SaveState(Context context, String key) {
        this.key = key;
        prefs = context.getSharedPreferences("OnBoardingPrefs", Context.MODE_PRIVATE);
    }

    public int getState() {
        return prefs.getInt(key, 0);
    }

    public void setState(int state) {
        prefs.edit().putInt(key, state).apply();
    }
}

4. 核对DashboardActivity视图ID

检查activity_dashboard.xml中所有ImageView的ID是否与代码中findViewById的ID完全一致，避免空指针异常。

5. 确认清单文件Activity注册

确保所有Activity在AndroidManifest.xml中正确注册，且主Activity设置为DashboardActivity：

<activity
    android:name=".DashboardActivity"
    android:exported="true">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>
<activity android:name=".OnBoarding" />
<activity android:name=".SplashScreen" />
<activity android:name=".RadioActivity" />

内容的提问来源于stack exchange，提问作者KURONICZ STUDIO

Android应用更换Dashboard为主活动后闪屏结束后崩溃求助

相关代码 #

SplashScreen #

OnBoarding #

DashboardActivity #

RadioActivity #

OnBoardingAdapter #

崩溃排查与修复方案 #

1. 修复SplashScreen重复加载布局问题 #

2. 修正引导页数量不匹配问题 #

3. 检查SaveState类实现 #

4. 核对DashboardActivity视图ID #

5. 确认清单文件Activity注册 #