我使用cordova-plugin-contacts从联系人中选择联系人。 应用程序在Android 5（Lollipop）和之前版本上运行良好。但是当我选择联系人时，在Android 6（Marshmallow）应用程序崩溃时。
这是我的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;
}
}
}
这是android logcat中显示的异常：
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)
正如异常所说，ContactManager.java:246中存在NullPointerException。所以我检查了插件代码，发现重新创建了ContactManager的对象，并在其上调用了onActivityResult。因为ContactManager的所有成员变量都为空。
我无法找出发生这种情况的原因。请查看cordova-plugin-contacts git repository以获取插件代码。
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，请与我们联系。提前谢谢。
答案 0 :(得分：1)
这完全是因为棉花糖的运行时许可的变化。 @Murtaza Khursheed Hussain是对的
以下是修复方法： 在访问移动设备的任何模块之前，您必须确保用户允许该权限。在您的情况下，它也适用于其他情况，如位置，文件存储，相机，传感器等。
您可以使用cordova.plugins.diagnostic插件
安装插件（cordova.plugins.diagnostic）：
$ cordova plugin add cordova.plugins.diagnostic
尝试按如下方式包装代码：
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);
以下是插件页面以获取更多信息。 cordova.plugins.diagnostic
希望它有所帮助！ :) 祝你有美好的一天
答案 1 :(得分：0)
尝试此代码
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);