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Камера не падает, проверка интернет соединения в условиях отсутствия интернета, буквенная клавиатура на вводе суммы

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This commit is contained in:
Ivan Murashov
2017-07-28 16:39:37 +03:00
parent ddd9caeba1
commit e53ceb9ef0
11 changed files with 425 additions and 242 deletions
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1
android/app/build.gradle
View File

@@ -47,7 +47,6 @@ flutter {
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile "com.google.android.gms:play-services-gcm:11.0.1"
compile 'com.android.support:appcompat-v7:25.0.0'
compile 'com.squareup.okhttp3:okhttp:3.8.1'
compile 'com.squareup.okio:okio:1.13.0'

5
android/app/src/main/AndroidManifest.xml
View File

@@ -11,6 +11,7 @@
-->
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<!-- io.flutter.app.FlutterApplication is an android.app.Application that
calls FlutterMain.startInitialization(this); in its onCreate method.
@@ -35,9 +36,5 @@
android:screenOrientation="portrait"
android:theme="@style/AppTheme"/>
<service
android:name="com.dinect.checker.service.RegistrationIntentService"
android:exported="false"/>
</application>
</manifest>

339
android/app/src/main/java/com/dinect/checker/activity/CameraActivity.java
View File

@@ -6,11 +6,13 @@ import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.ImageFormat;
import android.graphics.*;
import android.util.DisplayMetrics;
import android.content.res.Resources ;
import android.content.res.Resources;
import android.content.pm.PackageManager;
import android.text.TextUtils;
import android.view.Window;
import android.view.WindowManager;
import android.view.View;
import android.view.Menu;
import android.view.View.OnClickListener;
@@ -62,50 +64,60 @@ import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import com.dinect.checker.activity.Utils;
import com.dinect.checker.R;
public class CameraActivity extends AppCompatActivity implements SurfaceHolder.Callback {
public class CameraActivity extends AppCompatActivity implements Camera.PreviewCallback {
private Camera mCamera;
private Handler mAutoFocusHandler = new Handler();
private ImageScanner mScanner = new ImageScanner();
private HashMap<String, Integer> mContours = new HashMap<>();
public static final String SCAN_MODES = "SCAN_MODES";
public static final String SCAN_RESULT = "SCAN_RESULT";
public static final String SCAN_RESULT_TYPE = "SCAN_RESULT_TYPE";
public static final String ERROR_INFO = "ERROR_INFO";
private boolean mBarcodeScanned = false;
private boolean previewing = true;
private Handler autoFocusHandler;
private int mOffset;
private String mToken;
private LogoutDialogFragment mDialog;
private NetworkThread mNetworkThread;
private CameraPreview mPreview;
private Camera mCamera;
private ImageScanner mScanner;
private Handler mAutoFocusHandler;
private boolean mPreviewing = true;
static {
System.loadLibrary("iconv");
}
/** A safe way to get an instance of the Camera object. */
private static Camera getCameraInstance(){
Camera c = null;
try {
c = Camera.open();
} catch (Exception e){
e.printStackTrace();
}
return c;
}
public void onCreate(Bundle savedInstanceState) {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.a_scanner);
SurfaceView preview = (SurfaceView) findViewById(R.id.cameraPreview);
SurfaceHolder holder = preview.getHolder();
if(!isCameraAvailable()) {
// Cancel request if there is no rear-facing camera.
cancelRequest();
return;
}
mOffset = (int) (56 * getResources().getDisplayMetrics().density);
mToken = getIntent().getStringExtra(MainActivity.PREF_POS_TOKEN);
// Hide the window title.
requestWindowFeature(Window.FEATURE_NO_TITLE);
mAutoFocusHandler = new Handler();
// Create and configure the ImageScanner;
setupScanner();
// Create a RelativeLayout container that will hold a SurfaceView,
// and set it as the content of our activity.
mPreview = new CameraPreview(this, this, autoFocusCB);
// setContentView(mPreview);
setContentView(R.layout.a_scanner);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mOffset = (int) (56 * getResources().getDisplayMetrics().density);
autoFocusHandler = new Handler();
ActionBar actionBar = getSupportActionBar();
@@ -114,108 +126,123 @@ public class CameraActivity extends AppCompatActivity implements SurfaceHolder.C
actionBar.setDisplayHomeAsUpEnabled(false);
}
mToken = getIntent().getStringExtra(MainActivity.PREF_POS_TOKEN);
if (mToken == null) {
Intent intent = new Intent();
intent.putExtra("item", "logout");
setResult(RESULT_OK, intent);
finish();
}
FrameLayout root = (FrameLayout) findViewById(R.id.rootLayout);
root.addView(mPreview, 0);
}
mCamera = getCameraInstance();
mCamera.setPreviewCallback(previewCallback);
holder.addCallback(this);
public void setupScanner() {
mScanner = new ImageScanner();
mScanner.setConfig(0, Config.X_DENSITY, 3);
mScanner.setConfig(0, Config.Y_DENSITY, 3);
int[] symbols = getIntent().getIntArrayExtra(SCAN_MODES);
if (symbols != null) {
mScanner.setConfig(Symbol.NONE, Config.ENABLE, 0);
for (int symbol : symbols) {
mScanner.setConfig(symbol, Config.ENABLE, 1);
}
}
}
@Override
protected void onResume() {
super.onResume();
mCamera.startPreview();
previewing = true;
// Open the default i.e. the first rear facing camera.
mCamera = Camera.open();
if(mCamera == null) {
// Cancel request if mCamera is null.
cancelRequest();
return;
}
mPreview.setCamera(mCamera);
mPreview.showSurfaceView();
mPreviewing = true;
}
@Override
protected void onPause() {
super.onPause();
mCamera.stopPreview();
previewing = false;
}
@Override
public void onDestroy() {
super.onDestroy();
if (mCamera != null)
mCamera.release();
mCamera = null;
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
mCamera.setPreviewDisplay(holder);
mCamera.startPreview();
previewing = true;
try {
mCamera.autoFocus(autoFocusCallback);
} catch(Exception e) {
e.printStackTrace();
}
Log.d("kifio", "surfaceCreated");
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
setCameraDisplayOrientation(0);
Log.d("kifio", "surfaceChanged");
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
Log.d("kifio", "surfaceDestroyed");
// Because the Camera object is a shared resource, it's very
// important to release it when the activity is paused.
if (mCamera != null) {
mPreview.setCamera(null);
mCamera.cancelAutoFocus();
}
mCamera.setPreviewCallback(null);
mCamera.stopPreview();
mCamera.release();
void setCameraDisplayOrientation(int cameraId) {
// According to Jason Kuang on http://stackoverflow.com/questions/6519120/how-to-recover-camera-preview-from-sleep,
// there might be surface recreation problems when the device goes to sleep. So lets just hide it and
// recreate on resume
mPreview.hideSurfaceView();
int rotation = getWindowManager().getDefaultDisplay().getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
mPreviewing = false;
mCamera = null;
}
int result = 0;
// получаем инфо по камере cameraId
CameraInfo info = new CameraInfo();
Camera.getCameraInfo(cameraId, info);
// задняя камера
if (info.facing == CameraInfo.CAMERA_FACING_BACK) {
result = ((360 - degrees) + info.orientation);
} else
// передняя камера
if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
result = ((360 - degrees) - info.orientation);
result += 360;
}
public boolean isCameraAvailable() {
PackageManager pm = getPackageManager();
return pm.hasSystemFeature(PackageManager.FEATURE_CAMERA);
}
public void cancelRequest() {
Intent dataIntent = new Intent();
dataIntent.putExtra(ERROR_INFO, "Camera unavailable");
setResult(RESULT_CANCELED, dataIntent);
finish();
}
public void onPreviewFrame(byte[] data, Camera camera) {
if (mPreviewing) {
Camera.Parameters parameters = camera.getParameters();
Camera.Size size = parameters.getPreviewSize();
Image barcode = new Image(size.width, size.height, "Y800");
barcode.setData(data);
barcode.setCrop((size.width / 2) - mOffset, 0, (size.width / 2) + mOffset, size.height);
int result = mScanner.scanImage(barcode);
if (result != 0) {
mCamera.cancelAutoFocus();
mCamera.setPreviewCallback(null);
mCamera.stopPreview();
mPreviewing = false;
SymbolSet syms = mScanner.getResults();
for (Symbol sym : syms) {
String symData = sym.getData();
if (!TextUtils.isEmpty(symData) && Utils.isOnline(this)) {
mPreviewing = false;
requestUser(sym.getData());
break;
} else {
mPreviewing = true;
Toast.makeText(this, "Проверьте интернет соединение", Toast.LENGTH_SHORT).show();
}
}
}
}
result = result % 360;
mCamera.setDisplayOrientation(result);
}
}
private Runnable doAutoFocus = new Runnable() {
public void run() {
if(mCamera != null && mPreviewing) {
mCamera.autoFocus(autoFocusCB);
}
}
};
// Mimic continuous auto-focusing
Camera.AutoFocusCallback autoFocusCB = new Camera.AutoFocusCallback() {
public void onAutoFocus(boolean success, Camera camera) {
mAutoFocusHandler.postDelayed(doAutoFocus, 1000);
}
};
@Override
public boolean onCreateOptionsMenu(Menu menu) {
@@ -223,11 +250,8 @@ public class CameraActivity extends AppCompatActivity implements SurfaceHolder.C
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.logout) {
mDialog = new LogoutDialogFragment();
mDialog.show(getFragmentManager(), "logout");
@@ -248,54 +272,24 @@ public class CameraActivity extends AppCompatActivity implements SurfaceHolder.C
finish();
}
PreviewCallback previewCallback = new PreviewCallback() {
public void onPreviewFrame(byte[] data, Camera camera) {
Parameters parameters = camera.getParameters();
Size size = parameters.getPreviewSize();
Image barcode = new Image(size.width, size.height, "Y800");
barcode.setData(data);
barcode.setCrop((size.width / 2) - mOffset, 0, (size.width / 2) + mOffset, size.height);
int result = mScanner.scanImage(barcode);
if (result != 0) {
previewing = false;
mCamera.setPreviewCallback(null);
mCamera.stopPreview();
SymbolSet syms = mScanner.getResults();
for (Symbol sym : syms) {
mBarcodeScanned = true;
requestUser(sym.getData());
break;
}
}
}
};
private NetworkThread t;
private void requestUser(String code) {
t = new NetworkThread(this, code, mToken);
t.start();
mNetworkThread = new NetworkThread(this, code, mToken);
mNetworkThread.start();
}
void handleResult(Response response, String card) {
if (response == null) {
previewing = true;
mCamera.setPreviewCallback(previewCallback);
mPreviewing = true;
mCamera.startPreview();
return;
}
if (response.code() == 200) {
Log.d("kifio", "status: " + response.code());
int code = response.code();
if (code == 200) {
try {
String s = response.body().string();
JSONArray users = new JSONArray(s);
Log.d("kifio", s);
JSONArray users = new JSONArray(s);
if (users.length() > 0) {
Intent intent = new Intent();
intent.putExtra("user", users.get(0).toString());
@@ -304,14 +298,17 @@ public class CameraActivity extends AppCompatActivity implements SurfaceHolder.C
finish();
} else {
Toast.makeText(this, "Пользователь с таким id не найден", Toast.LENGTH_SHORT).show();
previewing = true;
mCamera.setPreviewCallback(previewCallback);
mPreviewing = true;
mCamera.startPreview();
}
} catch (IOException | JSONException e) {
e.printStackTrace();
}
} else if(code == 204) {
mPreviewing = true;
Toast.makeText(this, "Пользователь с таким id не найден", Toast.LENGTH_SHORT).show();
} else {
mPreviewing = true;
try {
Log.d("kifio", response.body().string());
Toast.makeText(this, "Произошла ошибка", Toast.LENGTH_SHORT).show();
@@ -320,28 +317,15 @@ public class CameraActivity extends AppCompatActivity implements SurfaceHolder.C
}
}
t.close();
mNetworkThread.close();
mNetworkThread = null;
}
private Runnable doAutoFocus = new Runnable() {
public void run() {
if (previewing) {
mCamera.autoFocus(autoFocusCallback);
}
}
};
AutoFocusCallback autoFocusCallback = new AutoFocusCallback() {
public void onAutoFocus(boolean success, Camera camera) {
autoFocusHandler.postDelayed(doAutoFocus, 1000);
}
};
private static class NetworkThread extends Thread {
private CameraActivity mActivity;
private String mCode = "";
private String mUrl = "https://pos-api-int.dinect.com/20130701/?auto=";
private String mUrl = "https://pos-api-int.dinect.com/20130701/users?auto=";
private String mCard = "";
private String mToken = "";
@@ -363,6 +347,9 @@ public class CameraActivity extends AppCompatActivity implements SurfaceHolder.C
@Override
public void run() {
Log.d("kifio", mUrl);
Log.d("kifio", mToken);
Request request = new Request.Builder()
.addHeader("DM-Authorization", "dmapptoken 9fec83cdca38c357e6b65dbb17514cdd36bf2a08")
.addHeader("Authorization", "dmtoken " + mToken)
@@ -416,7 +403,6 @@ public class CameraActivity extends AppCompatActivity implements SurfaceHolder.C
negativeButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
Log.d("kifio", "Negative click!");
((CameraActivity) getActivity()).dismissDialog();
}
});
@@ -424,7 +410,6 @@ public class CameraActivity extends AppCompatActivity implements SurfaceHolder.C
positiveButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
Log.d("kifio", "Positive click!");
((CameraActivity) getActivity()).logout();
}
});

207
android/app/src/main/java/com/dinect/checker/activity/CameraPreview.java Normal file
View File

@@ -0,0 +1,207 @@
package com.dinect.checker.activity;
import android.content.Context;
import android.app.Activity;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.AutoFocusCallback;
import android.hardware.Camera.PreviewCallback;
import android.hardware.Camera.Size;
import android.util.Log;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import java.io.IOException;
import java.util.List;
class CameraPreview extends ViewGroup implements SurfaceHolder.Callback {
private final String TAG = "CameraPreview";
SurfaceView mSurfaceView;
SurfaceHolder mHolder;
Size mPreviewSize;
List<Size> mSupportedPreviewSizes;
Camera mCamera;
PreviewCallback mPreviewCallback;
AutoFocusCallback mAutoFocusCallback;
CameraPreview(Context context, PreviewCallback previewCallback, AutoFocusCallback autoFocusCb) {
super(context);
mPreviewCallback = previewCallback;
mAutoFocusCallback = autoFocusCb;
mSurfaceView = new SurfaceView(context);
addView(mSurfaceView);
// Install a SurfaceHolder.Callback so we get notified when the
// underlying surface is created and destroyed.
mHolder = mSurfaceView.getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
public void setCamera(Camera camera) {
mCamera = camera;
if (mCamera != null) {
mSupportedPreviewSizes = mCamera.getParameters().getSupportedPreviewSizes();
requestLayout();
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// We purposely disregard child measurements because act as a
// wrapper to a SurfaceView that centers the camera preview instead
// of stretching it.
final int width = resolveSize(getSuggestedMinimumWidth(), widthMeasureSpec);
final int height = resolveSize(getSuggestedMinimumHeight(), heightMeasureSpec);
setMeasuredDimension(width, height);
if (mSupportedPreviewSizes != null) {
mPreviewSize = getOptimalPreviewSize(mSupportedPreviewSizes, width, height);
}
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
if (changed && getChildCount() > 0) {
final View child = getChildAt(0);
final int width = r - l;
final int height = b - t;
int previewWidth = width;
int previewHeight = height;
if (mPreviewSize != null) {
previewWidth = mPreviewSize.width;
previewHeight = mPreviewSize.height;
}
child.layout(0, 0,width, height);
}
}
public void hideSurfaceView() {
mSurfaceView.setVisibility(View.INVISIBLE);
}
public void showSurfaceView() {
mSurfaceView.setVisibility(View.VISIBLE);
}
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, acquire the camera and tell it where
// to draw.
try {
if (mCamera != null) {
mCamera.setPreviewDisplay(holder);
}
} catch (IOException exception) {
Log.e(TAG, "IOException caused by setPreviewDisplay()", exception);
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
// Surface will be destroyed when we return, so stop the preview.
if (mCamera != null) {
mCamera.cancelAutoFocus();
mCamera.stopPreview();
}
}
private Size getOptimalPreviewSize(List<Size> sizes, int w, int h) {
final double ASPECT_TOLERANCE = 0.1;
double targetRatio = (double) w / h;
if (sizes == null) return null;
Size optimalSize = null;
double minDiff = Double.MAX_VALUE;
int targetHeight = h;
// Try to find an size match aspect ratio and size
for (Size size : sizes) {
double ratio = (double) size.width / size.height;
if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue;
if (Math.abs(size.height - targetHeight) < minDiff) {
optimalSize = size;
minDiff = Math.abs(size.height - targetHeight);
}
}
// Cannot find the one match the aspect ratio, ignore the requirement
if (optimalSize == null) {
minDiff = Double.MAX_VALUE;
for (Size size : sizes) {
if (Math.abs(size.height - targetHeight) < minDiff) {
optimalSize = size;
minDiff = Math.abs(size.height - targetHeight);
}
}
}
return optimalSize;
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
if (holder.getSurface() == null){
// preview surface does not exist
return;
}
if (mCamera != null) {
// Now that the size is known, set up the camera parameters and begin
// the preview.
setCameraDisplayOrientation(0);
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height);
requestLayout();
mCamera.setParameters(parameters);
mCamera.setPreviewCallback(mPreviewCallback);
mCamera.startPreview();
mCamera.autoFocus(mAutoFocusCallback);
}
}
void setCameraDisplayOrientation(int cameraId) {
int rotation = ((Activity) getContext()).getWindowManager().getDefaultDisplay().getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
}
int result = 0;
// получаем инфо по камере cameraId
CameraInfo info = new CameraInfo();
Camera.getCameraInfo(cameraId, info);
// задняя камера
if (info.facing == CameraInfo.CAMERA_FACING_BACK) {
result = ((360 - degrees) + info.orientation);
} else
// передняя камера
if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
result = ((360 - degrees) - info.orientation);
result += 360;
}
result = result % 360;
mCamera.setDisplayOrientation(result);
}
}

13
android/app/src/main/java/com/dinect/checker/activity/MainActivity.java
View File

@@ -1,19 +1,17 @@
package com.dinect.checker.activity;
import android.os.Bundle;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.content.Context;
import android.content.SharedPreferences;
import com.dinect.checker.activity.CameraActivity;
import com.dinect.checker.service.RegistrationIntentService;
import io.flutter.app.FlutterActivity;
import io.flutter.plugins.GeneratedPluginRegistrant;
import io.flutter.plugin.common.MethodCall;
import io.flutter.plugin.common.MethodChannel;
import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
import io.flutter.plugin.common.MethodChannel.Result;
import com.google.android.gms.iid.InstanceID;
import java.util.Map;
import java.util.ArrayList;
import java.lang.System;
@@ -43,15 +41,6 @@ public class MainActivity extends FlutterActivity {
@Override
public void onMethodCall(MethodCall call, Result result) {
switch (call.method) {
case "getInstanceID":
InstanceID instanceID = InstanceID.getInstance(MainActivity.this);
String id = instanceID.getId();
if (id != null) {
result.success(id);
} else {
result.error("UNAVAILABLE", "Can't get instanceID.", null);
}
break;
case "saveToken":
Map tokenArguments = call.arguments();
mPreferences.edit().putString(PREF_POS_TOKEN, (String) tokenArguments.get("token")).apply();

16
android/app/src/main/java/com/dinect/checker/activity/Utils.java Normal file
View File

@@ -0,0 +1,16 @@
package com.dinect.checker.activity;
import android.content.Context;
import android.net.NetworkInfo;
import android.net.ConnectivityManager;
public class Utils {
private Utils() {}
public static boolean isOnline(Context context) {
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
return netInfo != null && netInfo.isConnected();
}
}

24
android/app/src/main/java/com/dinect/checker/service/RegistrationIntentService.java
View File

@@ -1,24 +0,0 @@
package com.dinect.checker.service;
import android.app.IntentService;
import android.content.Intent;
import android.util.Log;
import android.support.annotation.Nullable;
import android.widget.Toast;
import com.google.android.gms.iid.InstanceID;
import java.io.IOException;
public class RegistrationIntentService extends IntentService {
public RegistrationIntentService() {
super(RegistrationIntentService.class.getName());
}
@Override
protected void onHandleIntent(@Nullable Intent intent) {
InstanceID instanceID = InstanceID.getInstance(this);
String token = instanceID.getId();
Log.d("kifio", token);
}
}

4
android/app/src/main/res/layout/a_scanner.xml
View File

@@ -6,10 +6,6 @@
android:layout_width="match_parent"
android:layout_height="match_parent">
<SurfaceView android:id="@+id/cameraPreview"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<LinearLayout android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">