我有一个适用于多个Android设备的应用。但是有些人在打开应用程序时就会崩溃。我不知道问题是什么，但是这里有一个不起作用的设备的logcat：
02-13 18:38:54.130 17779-17779/? I/SELinux: Function: selinux_android_load_priority [0], There is no sepolicy file.
02-13 18:38:54.170 17779-17779/? I/SELinux: Function: selinux_android_load_priority , spota verifySig and checkHash pass. priority version is VE=SEPF_GT-I9195_4.4.2_0055
02-13 18:38:54.170 17779-17779/? I/SELinux: selinux_android_seapp_context_reload: seapp_contexts file is loaded from /data/security/spota/seapp_contexts
02-13 18:38:54.170 17779-17779/? E/dalvikvm: >>>>> Normal User
02-13 18:38:54.170 17779-17779/? E/dalvikvm: >>>>> com.reelychat.reelychat [ userId:0 | appId:10269 ]
02-13 18:38:54.170 17779-17779/? D/dalvikvm: Late-enabling CheckJNI
02-13 18:38:54.260 17779-17785/? E/jdwp: Failed sending reply to debugger: Broken pipe
02-13 18:38:54.260 17779-17785/? D/dalvikvm: Debugger has detached; object registry had 1 entries
02-13 18:38:54.330 17779-17779/? W/dalvikvm: Unable to resolve superclass of Lcom/reelychat/reelychat/MainActivity$4; (168)
02-13 18:38:54.330 17779-17779/? W/dalvikvm: Link of class 'Lcom/reelychat/reelychat/MainActivity$4;' failed
02-13 18:38:54.330 17779-17779/? E/dalvikvm: Could not find class 'com.reelychat.reelychat.MainActivity$4', referenced from method com.reelychat.reelychat.MainActivity.callToStart
02-13 18:38:54.330 17779-17779/? W/dalvikvm: VFY: unable to resolve new-instance 2857 (Lcom/reelychat/reelychat/MainActivity$4;) in Lcom/reelychat/reelychat/MainActivity;
02-13 18:38:54.330 17779-17779/? D/dalvikvm: VFY: replacing opcode 0x22 at 0x000d
02-13 18:38:54.330 17779-17779/? W/dalvikvm: VFY: unable to find class referenced in signature ([Landroid/util/Size;)
02-13 18:38:54.330 17779-17779/? I/dalvikvm: Could not find method android.util.Size.getHeight, referenced from method com.reelychat.reelychat.MainActivity.choueOSize
02-13 18:38:54.330 17779-17779/? W/dalvikvm: VFY: unable to resolve virtual method 15719: Landroid/util/Size;.getHeight ()I
02-13 18:38:54.330 17779-17779/? D/dalvikvm: VFY: replacing opcode 0x6e at 0x0013
02-13 18:38:54.340 17779-17779/? E/dalvikvm: Could not find class 'android.util.Size', referenced from method com.reelychat.reelychat.MainActivity.choueOSize
02-13 18:38:54.340 17779-17779/? W/dalvikvm: VFY: unable to resolve check-cast 1976 (Landroid/util/Size;) in Lcom/reelychat/reelychat/MainActivity;
02-13 18:38:54.340 17779-17779/? D/dalvikvm: VFY: replacing opcode 0x1f at 0x0040
02-13 18:38:54.340 17779-17779/? W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/util/Size;)
02-13 18:38:54.340 17779-17779/? W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/util/Size;)
02-13 18:38:54.340 17779-17779/? W/dalvikvm: DexOpt: method is in an interface
02-13 18:38:54.340 17779-17779/? I/dalvikvm: Could not find method android.hardware.camera2.CameraDevice.close, referenced from method com.reelychat.reelychat.MainActivity.closeCam
02-13 18:38:54.340 17779-17779/? W/dalvikvm: VFY: unable to resolve virtual method 875: Landroid/hardware/camera2/CameraDevice;.close ()V
02-13 18:38:54.340 17779-17779/? W/dalvikvm: VFY: rejecting opcode 0x6e at 0x0008
02-13 18:38:54.340 17779-17779/? W/dalvikvm: VFY: rejected Lcom/reelychat/reelychat/MainActivity;.closeCam ()V
02-13 18:38:54.340 17779-17779/? W/dalvikvm: Verifier rejected class Lcom/reelychat/reelychat/MainActivity;
02-13 18:38:54.340 17779-17779/? W/dalvikvm: Class init failed in newInstance call (Lcom/reelychat/reelychat/MainActivity;)
02-13 18:38:54.340 17779-17779/? D/AndroidRuntime: Shutting down VM
02-13 18:38:54.340 17779-17779/? W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x418b9da0)
02-13 18:38:54.340 17779-17779/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.reelychat.reelychat, PID: 17779
java.lang.VerifyError: com/reelychat/reelychat/MainActivity
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1208)
at android.app.Instrumentation.newActivity(Instrumentation.java:1067)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2296)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2470)
at android.app.ActivityThread.access$900(ActivityThread.java:174)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1307)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5593)
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:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
主要活动的代码：
public class MainActivity extends AppCompatActivity {
int user_id;
CallbackManager callbackManager;
SharedPreferences preferences;
int my_user_id;
int my_age;
String my_f_id;
String my_name;
String my_location;
private Camera mCamera;
private CameraPreview mPreview;
boolean previewStarted = false;
// camera2 stuff
private TextureView mTextureView;
private TextureView.SurfaceTextureListener mTextureViewListner;
private CameraDevice mCamDevice;
private CameraDevice.StateCallback mCamDeviceSCallback;
private String mCamId;
private static final int requestCamPermisionResult = 0;
private Size mPreviewSize;
private CaptureRequest.Builder mCapturRBuilder;
private HandlerThread bHandlerThread;
private Handler bHandler;
RelativeLayout siz;
private static SparseIntArray orientation = new SparseIntArray();
static {
orientation.append(Surface.ROTATION_0, 0);
orientation.append(Surface.ROTATION_90, 90);
orientation.append(Surface.ROTATION_180, 180);
orientation.append(Surface.ROTATION_270, 270);
}
private boolean versionCheck(){
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
return true;
}
else
return false;
}
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
preferences = getSharedPreferences("ReelyChat", this.MODE_PRIVATE);
Intent intent2 = getIntent();
if(intent2.hasExtra("go")){
}
else{
if (preferences.contains("f_id")) {
my_f_id = preferences.getString("f_id", null);
my_user_id = preferences.getInt("user_id", 0);
my_age = preferences.getInt("age", 0);
my_name = preferences.getString("name", null);
my_location = preferences.getString("location", null);
if (my_f_id == null){
facebookInit();
setContentView(R.layout.activity_main);
siz = (RelativeLayout)findViewById(R.id.siz);
getCam();
facebookCall();
// notifyMessage();
} else {
Intent intent;
intent = new Intent(MainActivity.this, Results.class);
startActivity(intent);
finish();
}
} else {
facebookInit();
setContentView(R.layout.activity_main);
siz = (RelativeLayout)findViewById(R.id.siz);
getCam();
facebookCall();
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackManager.onActivityResult(requestCode, resultCode, data);
}
@Override
public void onDestroy() {
super.onDestroy();
// profileTracker.stopTracking();
}
private void facebookInit(){
FacebookSdk.sdkInitialize(getApplicationContext());
}
private void facebookCall(){
if(AccessToken.getCurrentAccessToken() != null){
getFacebookInfo(AccessToken.getCurrentAccessToken());
}
callbackManager = CallbackManager.Factory.create();
LoginButton loginButton = (LoginButton) findViewById(R.id.login_button);
loginButton.setReadPermissions(Arrays.asList("public_profile", "user_location", "email", "user_birthday", "user_friends"));
loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
if(AccessToken.getCurrentAccessToken() != null) {
getFacebookInfo(loginResult.getAccessToken());
}
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException error) {
}
});
}
private void getFacebookInfo(final AccessToken accessToken){
GraphRequest request = GraphRequest.newMeRequest(accessToken, new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
try {
Intent intent;
intent = new Intent(MainActivity.this, Login.class);
Bundle b = new Bundle();
System.out.println(accessToken.getUserId());
System.out.println(object.getString("first_name"));
// System.out.println(object.getString("birthday"));
System.out.println(object.getString("gender"));
b.putString("user_id", accessToken.getUserId());
b.putString("name", object.getString("first_name"));
if(object.has("birthday")){
b.putString("dob", object.getString("birthday"));
}else{
b.putString("dob", "");
}
b.putString("dob", object.getString("birthday"));
b.putString("gender", object.getString("gender"));
if(object.has("location")){
b.putString("location", object.getJSONObject("location").getString("name"));
}else{
b.putString("location", "");
}
b.putString("verified", object.getString("verified"));
intent.putExtras(b);
startActivity(intent);
finish();
} catch (JSONException e) {
e.printStackTrace();
}
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id, first_name, birthday, gender, email, location, verified");
request.setParameters(parameters);
request.executeAsync();
}
/** A basic Camera preview class */
private void getCam(){
if(versionCheck()){
mTextureView = (TextureView)findViewById(R.id.textureView2);
mTextureView.setVisibility(View.VISIBLE);
callToStart();
}else{
mCamera = getCameraInstance();
// Create our Preview view and set it as the content of our activity.
mPreview = new CameraPreview(this, mCamera);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(mPreview);
}
}
// Camera methods
public static Camera getCameraInstance(){
int cameraCount = 0;
Camera cam = null;
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
cameraCount = Camera.getNumberOfCameras();
for (int camIdx = 0; camIdx < cameraCount; camIdx++) {
Camera.getCameraInfo(camIdx, cameraInfo);
if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
try {
cam = Camera.open(camIdx);
} catch (RuntimeException e) {
}
}
}
return cam;
}
public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
private SurfaceHolder mHolder;
private Camera mCamera;
public CameraPreview(Context context, Camera camera) {
super(context);
mCamera = camera;
// Install a SurfaceHolder.Callback so we get notified when the
// underlying surface is created and destroyed.
mHolder = getHolder();
mHolder.addCallback(this);
// deprecated setting, but required on Android versions prior to 3.0
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, now tell the camera where to draw the preview.
try {
mCamera.setPreviewDisplay(holder);
mCamera.startPreview();
}
catch (IOException e) {
// Log.d(TAG, "Error setting camera preview: " + e.getMessage());
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
// empty. Take care of releasing the Camera preview in your activity.
if (mCamera != null) {
mCamera.stopPreview();
mCamera.release();
mCamera = null;
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
// If your preview can change or rotate, take care of those events here.
// Make sure to stop the preview before resizing or reformatting it.
mCamera.stopPreview();
mCamera.setDisplayOrientation(90);
mCamera.stopPreview();
if (mHolder.getSurface() == null){
// preview surface does not exist
return;
}
// Stop preview before making changes
try {
mCamera.stopPreview();
}
catch (Exception e){
// Ignore: tried to stop a non-existent preview
}
// Set preview size and make any resize, rotate or
// reformatting changes here
// Start preview with new settings
try {
android.view.ViewGroup.LayoutParams lp = mPreview.getLayoutParams();
lp.width = siz.getWidth() + 50;
lp.height = siz.getHeight();
mPreview.setLayoutParams(lp);
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();
}
catch (Exception e){
// Log.d(TAG, "Error starting camera preview: " + e.getMessage());
}
}
}
private void printKeyHash() {
// Add code to print out the key hash
try {
PackageInfo info = getPackageManager().getPackageInfo("YOUR PACKAGE NAME", PackageManager.GET_SIGNATURES);
for (Signature signature : info.signatures) {
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(signature.toByteArray());
Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
}
}
catch (PackageManager.NameNotFoundException e) {
Log.e("KeyHash:", e.toString());
}
catch (NoSuchAlgorithmException e) {
Log.e("KeyHash:", e.toString());
}
}
//----------------------------------------------------------
// Camera2 methods
private void callToStart(){
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mTextureViewListner = new TextureView.SurfaceTextureListener() {
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
setupCam(width, height);
conectCam();
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
};
mCamDeviceSCallback = new CameraDevice.StateCallback() {
@Override
public void onOpened(CameraDevice camera) {
mCamDevice = camera;
startPreview();
previewStarted = true;
}
@Override
public void onDisconnected(CameraDevice camera) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
camera.close();
}
mCamDevice = null;
}
@Override
public void onError(CameraDevice camera, int error) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
camera.close();
}
mCamDevice = null;
}
};
}
}
private void setupCam(int width, int heigth){
CameraManager camManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
try {
for(String cameraId: camManager.getCameraIdList()){
CameraCharacteristics camChhar = camManager.getCameraCharacteristics(cameraId);
if(camChhar.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_BACK){
continue;
}
StreamConfigurationMap map = camChhar.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
int deviseOrientation = getWindowManager().getDefaultDisplay().getRotation();
int totalRotation = sensorDOrientation(camChhar, deviseOrientation);
boolean swapRotation = totalRotation == 90 || totalRotation == 270;
int rotatedWidth = width;
int rotatedHeigth = heigth;
if(swapRotation){
rotatedWidth = heigth;
rotatedHeigth = width;
}
mPreviewSize = choueOSize(map.getOutputSizes(SurfaceTexture.class), rotatedWidth, rotatedHeigth);
mCamId = cameraId;
return;
}
}
catch(Exception e) {
e.printStackTrace();
}
}
}
private void conectCam() {
CameraManager camManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
camManager.openCamera(mCamId, mCamDeviceSCallback, bHandler);
}else{
if(shouldShowRequestPermissionRationale(android.Manifest.permission.CAMERA)){
Toast.makeText(this, "reelyChat requires access to camera", Toast.LENGTH_LONG).show();
}
requestPermissions(new String[] {android.Manifest.permission.CAMERA}, requestCamPermisionResult);
}
} else {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
camManager.openCamera(mCamId, mCamDeviceSCallback, bHandler);
}
}
}
catch (Exception e) {
e.printStackTrace();
}
}
private void startPreview(){
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
SurfaceTexture surfaceTexture = mTextureView.getSurfaceTexture();
surfaceTexture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
Surface preSurface = new Surface(surfaceTexture);
try {
mCapturRBuilder = mCamDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
mCapturRBuilder.addTarget(preSurface);
mCamDevice.createCaptureSession(Arrays.asList(preSurface), new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(CameraCaptureSession session) {
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
try {
session.setRepeatingRequest(mCapturRBuilder.build(), null, bHandler);
} catch (Exception e) {
e.printStackTrace();
}
}
}
@Override
public void onConfigureFailed(CameraCaptureSession session) {
Toast.makeText(getApplicationContext(), "ops looks like there was a problem", Toast.LENGTH_LONG).show();
}
}, null);
}
catch (Exception e) {
e.printStackTrace();
}
}
}
private void closeCam(){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mCamDevice.close();
}
mCamDevice = null;
}
private void startBThread(){
bHandlerThread = new HandlerThread("reelyChatCam");
bHandlerThread.start();
bHandler = new Handler(bHandlerThread.getLooper());
}
private void stopBThread(){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
bHandlerThread.quitSafely();
try {
bHandlerThread.join();
bHandlerThread = null;
bHandler = null;
}
catch (InterruptedException e) {
e.printStackTrace();
}
}
}
private static int sensorDOrientation(CameraCharacteristics camCharacteristics, int deviceOrientation){
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
int sensorOrientation = camCharacteristics.get(CameraCharacteristics.SENSOR_ORIENTATION);
deviceOrientation = orientation.get(deviceOrientation);
return (sensorOrientation + deviceOrientation + 360) % 360;
}
else
return 0;
}
private static Size choueOSize(Size[] choices, int width, int heigth){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
List<Size> bigEnough = new ArrayList<Size>();
for(Size option : choices){
if(option.getHeight() == option.getWidth() * heigth / width && option.getWidth() >= width && option.getHeight() >= heigth){
bigEnough.add(option);
}
}
if(bigEnough.size() > 0){
return Collections.min(bigEnough, new compareSizeByArea());
}
else{
return choices[0];
}
}
else
return null;
}
private static class compareSizeByArea implements Comparator<Size> {
@Override
public int compare(Size o1, Size o2) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
return Long.signum((long) o1.getWidth() * o1.getHeight() / (long) o2.getWidth() * o2.getHeight());
}
else
return 0;
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(versionCheck()){
if(requestCode == requestCamPermisionResult){
if(grantResults[0] != PackageManager.PERMISSION_GRANTED){
// Toast.makeText(getApplicationContext(), "Please grant access to device camera in aplication settings to use this application", Toast.LENGTH_LONG).show();
}
}
}
}
@Override
protected void onResume() {
super.onPostResume();
if(versionCheck()) {
startBThread();
if(mTextureView.isAvailable()){
setupCam(mTextureView.getWidth(), mTextureView.getHeight());
conectCam();
}
else{
mTextureView.setSurfaceTextureListener(mTextureViewListner);
}
}
}
@Override
protected void onPause() {
if(versionCheck()) {
if(previewStarted){
closeCam();
stopBThread();
}
}
super.onPause();
}
}
我知道要查看的代码很多，但任何见解都会非常受欢迎。
答案 0 :(得分：0)
您宣布Camera2.CameraDevice虽然它仅在API 21及更高版本上可用，因此API20或更低版本的设备无法找到类＆＃34; CAMERA2＆＃34;，所以它只是崩溃了。 您必须拆分代码并在单独的类（.CS / .Java）中进行声明，根据设备API决定使用哪个后，调用您需要的那个。这样的事情（我不确定如何）：
private void versionCheck() {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
this.cameraInterface = Camera2(this);
}
else
this.cameraInterface = Camera1(this);
}