cordova-plugin-contacts - 在Android M上的聯系人選擇應用程序崩潰

Question

我使用cordova-plugin-contacts從聯系人中選擇一個聯系人。 應用程序在Android 5（Lollipop）和之前版本上運行良好。 但是當我選擇一個聯系人時，Android 6（Marshmallow）應用程序崩潰了。

這是我的javascript：

navigator.contacts.pickContact(function(contact){
            $scope.contact.name=contact.displayName;
            if(contact.phoneNumbers) {
                msgToastService.toastMsgAlert('Number picked: ' + contact.phoneNumbers,'Contact',"SC");
            } else {
                msgToastService.toastMsgAlert('Choose Valid Mobile Number!','Contact',"SC");
            }
            $scope.$apply();
        },function(err){
        });

ContactManager.java

public class ContactManager extends CordovaPlugin {

private ContactAccessor contactAccessor;
private CallbackContext callbackContext;        // The callback context from which we were invoked.
private JSONArray executeArgs;

private static final String LOG_TAG = "Contact Query";

public static final int UNKNOWN_ERROR = 0;
public static final int INVALID_ARGUMENT_ERROR = 1;
public static final int TIMEOUT_ERROR = 2;
public static final int PENDING_OPERATION_ERROR = 3;
public static final int IO_ERROR = 4;
public static final int NOT_SUPPORTED_ERROR = 5;
public static final int PERMISSION_DENIED_ERROR = 20;
private static final int CONTACT_PICKER_RESULT = 1000;
public static String [] permissions;


//Request code for the permissions picker (Pick is async and uses intents)
public static final int SEARCH_REQ_CODE = 0;
public static final int SAVE_REQ_CODE = 1;
public static final int REMOVE_REQ_CODE = 2;
public static final int PICK_REQ_CODE = 3;

public static final String READ = Manifest.permission.READ_CONTACTS;
public static final String WRITE = Manifest.permission.WRITE_CONTACTS;

public static int instanceCounter = 0;
/**
 * Constructor.
 */
public ContactManager() {
    instanceCounter++;
    Log.e(this.getClass().getName(), "Instance created: " + instanceCounter);
}


protected void getReadPermission(int requestCode)
{
    cordova.requestPermission(this, requestCode, READ);
}


protected void getWritePermission(int requestCode)
{
    cordova.requestPermission(this, requestCode, WRITE);
}


/**
 * Executes the request and returns PluginResult.
 *
 * @param action            The action to execute.
 * @param args              JSONArray of arguments for the plugin.
 * @param callbackContext   The callback context used when calling back into JavaScript.
 * @return                  True if the action was valid, false otherwise.
 */
public boolean execute(String action, JSONArray args, final CallbackContext callbackContext) throws JSONException {

    this.callbackContext = callbackContext;
    this.executeArgs = args; 

    /**
     * Check to see if we are on an Android 1.X device.  If we are return an error as we
     * do not support this as of Cordova 1.0.
     */
    if (android.os.Build.VERSION.RELEASE.startsWith("1.")) {
        callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.ERROR, ContactManager.NOT_SUPPORTED_ERROR));
        return true;
    }

    /**
     * Only create the contactAccessor after we check the Android version or the program will crash
     * older phones.
     */
    if (this.contactAccessor == null) {
        this.contactAccessor = new ContactAccessorSdk5(this.cordova);
    }

    if (action.equals("search")) {
        if(cordova.hasPermission(READ)) {
            search(executeArgs);
        }
        else
        {
            getReadPermission(SEARCH_REQ_CODE);
        }
    }
    else if (action.equals("save")) {
        if(cordova.hasPermission(WRITE))
        {
            save(executeArgs);
        }
        else
        {
            getWritePermission(SAVE_REQ_CODE);
        }
    }
    else if (action.equals("remove")) {
        if(cordova.hasPermission(WRITE))
        {
            remove(executeArgs);
        }
        else
        {
            getWritePermission(REMOVE_REQ_CODE);
        }
    }
    else if (action.equals("pickContact")) {
        if(cordova.hasPermission(READ)) {
            pickContactAsync();
            PluginResult r = new PluginResult(PluginResult.Status.NO_RESULT);
            r.setKeepCallback(true);
            this.callbackContext.sendPluginResult(r);
        }
        else
        {
            getReadPermission(PICK_REQ_CODE);
        }
    }
    else {
        return false;
    }
    return true;
}

private void remove(JSONArray args) throws JSONException {
    final String contactId = args.getString(0);
    this.cordova.getThreadPool().execute(new Runnable() {
        public void run() {
            if (contactAccessor.remove(contactId)) {
                callbackContext.success();
            } else {
                callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.ERROR, UNKNOWN_ERROR));
            }
        }
    });
}

private void save(JSONArray args) throws JSONException {
    final JSONObject contact = args.getJSONObject(0);
    this.cordova.getThreadPool().execute(new Runnable(){
        public void run() {
            JSONObject res = null;
            String id = contactAccessor.save(contact);
            if (id != null) {
                try {
                    res = contactAccessor.getContactById(id);
                } catch (JSONException e) {
                    Log.e(LOG_TAG, "JSON fail.", e);
                }
            }
            if (res != null) {
                callbackContext.success(res);
            } else {
                callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.ERROR, UNKNOWN_ERROR));
            }
        }
    });
}

private void search(JSONArray args) throws JSONException
{
    final JSONArray filter = args.getJSONArray(0);
    final JSONObject options = args.get(1) == null ? null : args.getJSONObject(1);
    this.cordova.getThreadPool().execute(new Runnable() {
        public void run() {
            JSONArray res = contactAccessor.search(filter, options);
            callbackContext.success(res);
        }
    });
}


/**
 * Launches the Contact Picker to select a single contact.
 */
private void pickContactAsync() {
    final CordovaPlugin plugin = (CordovaPlugin) this;
    plugin.cordova.setActivityResultCallback(this);
    Runnable worker = new Runnable() {
        public void run() {
            Intent contactPickerIntent = new Intent(Intent.ACTION_PICK, Contacts.CONTENT_URI);
            plugin.cordova.startActivityForResult(plugin, contactPickerIntent, CONTACT_PICKER_RESULT);
        }
    };
    this.cordova.getActivity().runOnUiThread(worker);
}

/**
 * Called when user picks contact.
 * @param requestCode       The request code originally supplied to startActivityForResult(),
 *                          allowing you to identify who this result came from.
 * @param resultCode        The integer result code returned by the child activity through its setResult().
 * @param intent            An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
 * @throws JSONException
 */
public void onActivityResult(int requestCode, int resultCode, final Intent intent) {
    if (requestCode == CONTACT_PICKER_RESULT) {
        if (resultCode == Activity.RESULT_OK) {
            String contactId = intent.getData().getLastPathSegment();
            // to populate contact data we require  Raw Contact ID
            // so we do look up for contact raw id first
            Cursor c =  this.cordova.getActivity().getContentResolver().query(RawContacts.CONTENT_URI,
                        new String[] {RawContacts._ID}, RawContacts.CONTACT_ID + " = " + contactId, null, null);
            if (!c.moveToFirst()) {
                this.callbackContext.error("Error occured while retrieving contact raw id");
                return;
            }
            String id = c.getString(c.getColumnIndex(RawContacts._ID));
            c.close();

            try {
                JSONObject contact = contactAccessor.getContactById(id);//Exception in this line
                this.callbackContext.success(contact);
                return;
            } catch (JSONException e) {
                Log.e(LOG_TAG, "JSON fail.", e);
            }
        } else if (resultCode == Activity.RESULT_CANCELED){
            this.callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.NO_RESULT, UNKNOWN_ERROR));
            return;
        }
        this.callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.ERROR, UNKNOWN_ERROR));
    }
}

public void onRequestPermissionResult(int requestCode, String[] permissions,
                                         int[] grantResults) throws JSONException
{
    for(int r:grantResults)
    {
        if(r == PackageManager.PERMISSION_DENIED)
        {
            this.callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.ERROR, PERMISSION_DENIED_ERROR));
            return;
        }
    }
    switch(requestCode)
    {
        case SEARCH_REQ_CODE:
            search(executeArgs);
            break;
        case SAVE_REQ_CODE:
            save(executeArgs);
            break;
        case REMOVE_REQ_CODE:
            remove(executeArgs);
            break;
    }
}
}

這是android logcat中顯示的異常：

 E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.paymepaisa.in, PID: 28620
java.lang.RuntimeException: Unable to resume activity {com.paymepaisa.in/com.paymepaisa.in.MainActivity}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1000, result=-1, data=Intent { dat=content://com.android.contacts/contacts/lookup/1483r1353-2951434F593D2941394339.3789r1354-2951434F593D2941394339/1504191 flg=0x1 }} to activity {com.paymepaisa.in/com.paymepaisa.in.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'org.json.JSONObject org.apache.cordova.contacts.ContactAccessor.getContactById(java.lang.String)' on a null object reference
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3103)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3134)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481)
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.RuntimeException: Failure delivering result ResultInfo{who=null, request=1000, result=-1, data=Intent { dat=content://com.android.contacts/contacts/lookup/1483r1353-2951434F593D2941394339.3789r1354-2951434F593D2941394339/1504191 flg=0x1 }} to activity {com.paymepaisa.in/com.paymepaisa.in.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'org.json.JSONObject org.apache.cordova.contacts.ContactAccessor.getContactById(java.lang.String)' on a null object reference
at android.app.ActivityThread.deliverResults(ActivityThread.java:3699)
    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3089)
    at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3134) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481) 
    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.NullPointerException: Attempt to invoke virtual method 'org.json.JSONObject org.apache.cordova.contacts.ContactAccessor.getContactById(java.lang.String)' on a null object reference
    at org.apache.cordova.contacts.ContactManager.onActivityResult(ContactManager.java:246)
    at org.apache.cordova.CordovaInterfaceImpl.onActivityResult(CordovaInterfaceImpl.java:126)
    at org.apache.cordova.CordovaActivity.onActivityResult(CordovaActivity.java:348)
    at android.app.Activity.dispatchActivityResult(Activity.java:6428)
    at android.app.ActivityThread.deliverResults(ActivityThread.java:3695)
    at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3089) 
    at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3134) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481) 
    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) 

正如異常所說，ContactManager.java:246中存在NullPointerException。 所以我檢查了插件代碼，發現重新創建了ContactManager的對象，並在其上調用了onActivityResult。 因為ContactManager的所有成員變量都為空。

我不明白為什么會這樣。 請查看cordova-plugin-contacts git存儲庫以獲取插件代碼。

我的Cordova版本：5.3.1

Android SDK：Marshmallow（6）API Level-23

如果您想了解更多信息，請與我們聯系。 提前致謝。

Answer 1

這正是因為棉花糖的運行時許可的變化。 @Murtaza Khursheed Hussain是對的

以下是修復方法：在訪問移動設備的任何模塊之前，您必須確保用戶允許該權限。 在你的情況下它是聯系人，這也適用於其他情況，如位置，文件存儲，相機，傳感器等。

您可以使用cordova.plugins.diagnostic插件來請求運行時權限

安裝插件（cordova.plugins.diagnostic）： $ cordova plugin add cordova.plugins.diagnostic

嘗試按如下方式包裝代碼：

  cordova.plugins.diagnostic.getPermissionAuthorizationStatus(function(status){
    //Check for contact permission status
    if(cordova.plugins.diagnostic.runtimePermissionStatus.GRANTED !== status){
      //request for permission at runtime
      cordova.plugins.diagnostic.requestRuntimePermission(function(statusAfterRequest){
        if(cordova.plugins.diagnostic.runtimePermissionStatus.GRANTED === statusAfterRequest){
          //Your code here..
          //navigator.contacts.pickContact(....
        }
      }, function(error){
        console.error("error while requesting permission: "+error);
      },);
    }

  }, function(error){
      console.error("The following error occurred: "+error);
  }, cordova.plugins.diagnostic.runtimePermission.READ_CONTACTS);

這是插件頁面以獲取更多信息。 cordova.plugins.diagnostic

希望能幫助到你！ ：） 祝你有美好的一天

Answer 2

試試這個代碼

      cordova.plugins.diagnostic.requestRuntimePermission(function(status){
    switch(status){
        case cordova.plugins.diagnostic.permissionStatus.GRANTED:
            console.log("Permission granted to use the camera");
            $scope.callChargeDetailLoad();
            break;
        case cordova.plugins.diagnostic.permissionStatus.NOT_REQUESTED:
            console.log("Permission to use the camera has not been requested yet");
            break;
        case cordova.plugins.diagnostic.permissionStatus.DENIED:
            console.log("Permission denied to use the camera - ask again?");
            break;
        case cordova.plugins.diagnostic.permissionStatus.DENIED_ALWAYS:
            console.log("Permission permanently denied to use the camera - guess we won't be using it then!");
            break;
    }
}, function(error){
    console.error("The following error occurred: "+error);
}, cordova.plugins.diagnostic.permission.READ_CONTACTS);