下午好，我正在使用Gmail APi，但是当我去执行标签列表时，它显示我错了...
我的代码是：
package com.medical.germany.reportesgermany.Vista;
import android.Manifest;
import android.accounts.AccountManager;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.api.client.extensions.android.http.AndroidHttp;
import com.google.api.client.googleapis.extensions.android.gms.auth.GooglePlayServicesAvailabilityIOException;
import com.google.api.client.googleapis.extensions.android.gms.auth.UserRecoverableAuthIOException;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.ExponentialBackOff;
import com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential;
import com.google.api.services.gmail.GmailScopes;
import com.google.api.services.gmail.model.Label;
import com.google.api.services.gmail.model.ListLabelsResponse;
import com.medical.germany.reportesgermany.R;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import pub.devrel.easypermissions.AfterPermissionGranted;
import pub.devrel.easypermissions.EasyPermissions;
public class Splash extends AppCompatActivity implements View.OnClickListener,
EasyPermissions.PermissionCallbacks {
///Variables locales
Button boton_inicio;
ProgressDialog mProgress;
Toast mensaje;
Intent intent;
GoogleAccountCredential mCredential;
static final int REQUEST_ACCOUNT_PICKER = 1000;
static final int REQUEST_AUTHORIZATION = 1001;
static final int REQUEST_GOOGLE_PLAY_SERVICES = 1002;
static final int REQUEST_PERMISSION_GET_ACCOUNTS = 1003;
private static final String PREF_ACCOUNT_NAME = "accountName";
private static final String[] SCOPES = { GmailScopes.GMAIL_LABELS,GmailScopes.MAIL_GOOGLE_COM,GmailScopes.GMAIL_MODIFY,GmailScopes.GMAIL_READONLY,GmailScopes.GMAIL_METADATA };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
//Inicializar variables
boton_inicio= (Button) findViewById(R.id.button_iniciar);
mProgress = new ProgressDialog(this);
mProgress.setMessage("Conectandose a Gmail...");
// Initialize credentials and service object.
mCredential = GoogleAccountCredential.usingOAuth2(
getApplicationContext(), Arrays.asList(SCOPES))
.setBackOff(new ExponentialBackOff());
//Implementar eventos
boton_inicio.setOnClickListener(this);
}
/**
* Attempt to call the API, after verifying that all the preconditions are
* satisfied. The preconditions are: Google Play Services installed, an
* account was selected and the device currently has online access. If any
* of the preconditions are not satisfied, the app will prompt the user as
* appropriate.
*/
private void getResultsFromApi() {
if (! isGooglePlayServicesAvailable()) {
acquireGooglePlayServices();
} else if (mCredential.getSelectedAccountName() == null) {
chooseAccount();
} else if (! isDeviceOnline()) {
mensaje=Toast.makeText(this,"Conexión no disponible",Toast.LENGTH_SHORT);
mensaje.show();
} else {
new MakeRequestTask(mCredential).execute();
}
}
/**
* Attempts to set the account used with the API credentials. If an account
* name was previously saved it will use that one; otherwise an account
* picker dialog will be shown to the user. Note that the setting the
* account to use with the credentials object requires the app to have the
* GET_ACCOUNTS permission, which is requested here if it is not already
* present. The AfterPermissionGranted annotation indicates that this
* function will be rerun automatically whenever the GET_ACCOUNTS permission
* is granted.
*/
@AfterPermissionGranted(REQUEST_PERMISSION_GET_ACCOUNTS)
private void chooseAccount() {
if (EasyPermissions.hasPermissions(
this, Manifest.permission.GET_ACCOUNTS)) {
String accountName = getPreferences(Context.MODE_PRIVATE)
.getString(PREF_ACCOUNT_NAME, null);
if (accountName != null) {
mCredential.setSelectedAccountName(accountName);
getResultsFromApi();
} else {
// Start a dialog from which the user can choose an account
startActivityForResult(
mCredential.newChooseAccountIntent(),
REQUEST_ACCOUNT_PICKER);
}
} else {
// Request the GET_ACCOUNTS permission via a user dialog
EasyPermissions.requestPermissions(
this,
"Esta app necesita acceder a tu cuenta de google",
REQUEST_PERMISSION_GET_ACCOUNTS,
Manifest.permission.GET_ACCOUNTS);
}
}
/**
* Called when an activity launched here (specifically, AccountPicker
* and authorization) exits, giving you the requestCode you started it with,
* the resultCode it returned, and any additional data from it.
* @param requestCode code indicating which activity result is incoming.
* @param resultCode code indicating the result of the incoming
* activity result.
* @param data Intent (containing result data) returned by incoming
* activity result.
*/
@Override
protected void onActivityResult(
int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode) {
case REQUEST_GOOGLE_PLAY_SERVICES:
if (resultCode != RESULT_OK) {
mensaje=Toast.makeText(this,
"Esta aplicación requiere Servicios de google, por favor instalar ",Toast.LENGTH_LONG);
mensaje.show();
} else {
getResultsFromApi();
}
break;
case REQUEST_ACCOUNT_PICKER:
if (resultCode == RESULT_OK && data != null &&
data.getExtras() != null) {
String accountName =
data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
if (accountName != null) {
SharedPreferences settings =
getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putString(PREF_ACCOUNT_NAME, accountName);
editor.apply();
mCredential.setSelectedAccountName(accountName);
getResultsFromApi();
}
}
break;
case REQUEST_AUTHORIZATION:
if (resultCode == RESULT_OK) {
getResultsFromApi();
}
break;
}
}
/**
* Respond to requests for permissions at runtime for API 23 and above.
* @param requestCode The request code passed in
* requestPermissions(android.app.Activity, String, int, String[])
* @param permissions The requested permissions. Never null.
* @param grantResults The grant results for the corresponding permissions
* which is either PERMISSION_GRANTED or PERMISSION_DENIED. Never null.
*/
@Override
public void onRequestPermissionsResult(int requestCode,
@NonNull String[] permissions,
@NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
EasyPermissions.onRequestPermissionsResult(
requestCode, permissions, grantResults, this);
}
/**
* Callback for when a permission is granted using the EasyPermissions
* library.
* @param requestCode The request code associated with the requested
* permission
* @param list The requested permission list. Never null.
*/
@Override
public void onPermissionsGranted(int requestCode, List<String> list) {
// Do nothing.
}
/**
* Callback for when a permission is denied using the EasyPermissions
* library.
* @param requestCode The request code associated with the requested
* permission
* @param list The requested permission list. Never null.
*/
@Override
public void onPermissionsDenied(int requestCode, List<String> list) {
// Do nothing.
}
/**
* Checks whether the device currently has a network connection.
* @return true if the device has a network connection, false otherwise.
*/
private boolean isDeviceOnline() {
ConnectivityManager connMgr =
(ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
return (networkInfo != null && networkInfo.isConnected());
}
/**
* Check that Google Play services APK is installed and up to date.
* @return true if Google Play Services is available and up to
* date on this device; false otherwise.
*/
private boolean isGooglePlayServicesAvailable() {
GoogleApiAvailability apiAvailability =
GoogleApiAvailability.getInstance();
final int connectionStatusCode =
apiAvailability.isGooglePlayServicesAvailable(this);
return connectionStatusCode == ConnectionResult.SUCCESS;
}
/**
* Attempt to resolve a missing, out-of-date, invalid or disabled Google
* Play Services installation via a user dialog, if possible.
*/
private void acquireGooglePlayServices() {
GoogleApiAvailability apiAvailability =
GoogleApiAvailability.getInstance();
final int connectionStatusCode =
apiAvailability.isGooglePlayServicesAvailable(this);
if (apiAvailability.isUserResolvableError(connectionStatusCode)) {
showGooglePlayServicesAvailabilityErrorDialog(connectionStatusCode);
}
}
/**
* Display an error dialog showing that Google Play Services is missing
* or out of date.
* @param connectionStatusCode code describing the presence (or lack of)
* Google Play Services on this device.
*/
void showGooglePlayServicesAvailabilityErrorDialog(
final int connectionStatusCode) {
GoogleApiAvailability apiAvailability = GoogleApiAvailability.getInstance();
Dialog dialog = apiAvailability.getErrorDialog(
this,
connectionStatusCode,
REQUEST_GOOGLE_PLAY_SERVICES);
dialog.show();
}
@Override
public void onClick(View v) {
getResultsFromApi();
//intent = new Intent(this, Pantalla_inicio.class);
//startActivity(intent);
}
/**
* An asynchronous task that handles the Gmail API call.
* Placing the API calls in their own task ensures the UI stays responsive.
*/
private class MakeRequestTask extends AsyncTask<Void, Void, List<String>> {
private com.google.api.services.gmail.Gmail mService = null;
private Exception mLastError = null;
MakeRequestTask(GoogleAccountCredential credential) {
HttpTransport transport = AndroidHttp.newCompatibleTransport();
JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
mService = new com.google.api.services.gmail.Gmail.Builder(
transport, jsonFactory, credential)
.setApplicationName("Reportes Germany")
.build();
}
/**
* Background task to call Gmail API.
*
* @param params no parameters needed for this task.
*/
@Override
protected List<String> doInBackground(Void... params) {
try {
return getDataFromApi();
} catch (Exception e) {
mLastError = e;
cancel(true);
return null;
}
}
/**
* Fetch a list of Gmail labels attached to the specified account.
*
* @return List of Strings labels.
* @throws IOException
*/
private List<String> getDataFromApi() throws IOException {
// Get the labels in the user's account.
String user = "me";
List<String> labels = new ArrayList<>();
ListLabelsResponse listResponse =
mService.users().labels().list(user).execute();
for (Label label : listResponse.getLabels()) {
labels.add(label.getName());
}
return labels;
}
@Override
protected void onPreExecute() {
mProgress.show();
}
@Override
protected void onPostExecute(List<String> output) {
mProgress.hide();
if (output == null || output.size() == 0) {
mensaje= Toast.makeText(getApplicationContext(),"Sin resultados",Toast.LENGTH_LONG);
mensaje.show();
} else {
output.add(0, "Recibiendo datos: ");
mensaje= Toast.makeText(getApplicationContext(), TextUtils.join("\n", output),Toast.LENGTH_LONG);
mensaje.show();
}
}
@Override
protected void onCancelled() {
mProgress.hide();
if (mLastError != null) {
if (mLastError instanceof GooglePlayServicesAvailabilityIOException) {
showGooglePlayServicesAvailabilityErrorDialog(
((GooglePlayServicesAvailabilityIOException) mLastError)
.getConnectionStatusCode());
} else if (mLastError instanceof UserRecoverableAuthIOException) {
startActivityForResult(
((UserRecoverableAuthIOException) mLastError).getIntent(),
REQUEST_AUTHORIZATION);
} else {
mensaje= Toast.makeText(getApplicationContext(),"El siguiente error ocurrió::\n"
+ mLastError.getMessage(),Toast.LENGTH_SHORT);
mensaje.show();
}
} else {
mensaje= Toast.makeText(getApplicationContext(), "Petición cancelada.",Toast.LENGTH_SHORT);
mensaje.show();
}
}
}
}
这与“Google Developers”的代码相同，错误是：
12/14 15:33:36: Launching app
$ adb push C:\Users\Miguel\Programacion\Android\AndroidStudioProjects\ReportesGermany\app\build\outputs\apk\app-debug.apk /data/local/tmp/com.medical.germany.reportesgermany
$ adb shell pm install -r "/data/local/tmp/com.medical.germany.reportesgermany"
open: Permission denied
BT INFO: 2.2
BT INFO: 2.2
pkg: /data/local/tmp/com.medical.germany.reportesgermany
Success
$ adb shell am start -n "com.medical.germany.reportesgermany/com.medical.germany.reportesgermany.Vista.Splash" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 3198 on device huawei-g526_l22-88e3ab3c7e0c
E/Trace: error opening trace file: No such file or directory (2)
D/ActivityThread: setTargetHeapUtilization:0.75
D/ActivityThread: setTargetHeapIdealFree:8388608
D/ActivityThread: setTargetHeapConcurrentStart:2097152
W/dalvikvm: Refusing to reopen boot DEX '/system/framework/hwframework.jar'
W/dalvikvm: VFY: unable to resolve virtual method 269: Landroid/app/Application;.registerOnProvideAssistDataListener (Landroid/app/Application$OnProvideAssistDataListener;)V
W/dalvikvm: VFY: unable to resolve virtual method 272: Landroid/app/Application;.unregisterOnProvideAssistDataListener (Landroid/app/Application$OnProvideAssistDataListener;)V
I/InstantRun: Instant Run Runtime started. Android package is com.medical.germany.reportesgermany, real application class is null.
W/InstantRun: No instant run dex files added to classpath
I/ActivityThread: Pub com.medical.germany.reportesgermany: com.medical.germany.reportesgermany.Datos.Provider
E/dalvikvm: Could not find class 'android.util.ArrayMap', referenced from method com.android.tools.fd.runtime.MonkeyPatcher.monkeyPatchExistingResources
W/dalvikvm: VFY: unable to resolve check-cast 2277 (Landroid/util/ArrayMap;) in Lcom/android/tools/fd/runtime/MonkeyPatcher;
E/dalvikvm: Could not find class 'android.util.ArrayMap', referenced from method com.android.tools.fd.runtime.MonkeyPatcher.pruneResourceCache
W/dalvikvm: VFY: unable to resolve const-class 2277 (Landroid/util/ArrayMap;) in Lcom/android/tools/fd/runtime/MonkeyPatcher;
W/dalvikvm: VFY: unable to resolve interface method 20292: Landroid/view/Window$Callback;.onProvideKeyboardShortcuts (Ljava/util/List;Landroid/view/Menu;I)V
W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;)
W/dalvikvm: VFY: unable to resolve interface method 20294: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z
W/dalvikvm: VFY: unable to resolve interface method 20298: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
W/dalvikvm: VFY: unable to resolve virtual method 837: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
W/dalvikvm: VFY: unable to resolve virtual method 859: Landroid/content/res/TypedArray;.getType (I)I
W/dalvikvm: VFY: unable to resolve virtual method 800: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
W/dalvikvm: VFY: unable to resolve virtual method 802: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
E/dalvikvm: Could not find class 'android.graphics.drawable.RippleDrawable', referenced from method android.support.v7.widget.AppCompatImageHelper.hasOverlappingRendering
W/dalvikvm: VFY: unable to resolve instanceof 177 (Landroid/graphics/drawable/RippleDrawable;) in Landroid/support/v7/widget/AppCompatImageHelper;
W/dalvikvm: VFY: unable to resolve virtual method 550: Landroid/content/Context;.getColorStateList (I)Landroid/content/res/ColorStateList;
I/Adreno200-EGL: <qeglDrvAPI_eglInitialize:269>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_JB_2.3.04.01.01.32.125_msm8960_JB_2.2_RB2.3_CL3228873_release_AU (CL3228873)
Build Date: 03/01/13 Fri
Local Branch:
Remote Branch: m/jb_2.2_rb2.3
Local Patches: NONE
Reconstruct Branch: AU_LINUX_ANDROID_JB_2.3.04.01.01.32.125 + 49716de + 6d091ee + NOTHING
D/AudioManager: currentDeviceType = 1
E/dalvikvm: Could not find class 'android.os.UserManager', referenced from method com.google.android.gms.common.zze.zzas
W/dalvikvm: VFY: unable to resolve check-cast 274 (Landroid/os/UserManager;) in Lcom/google/android/gms/common/zze;
W/dalvikvm: VFY: unable to resolve virtual method 757: Landroid/content/pm/PackageManager;.getPackageInstaller ()Landroid/content/pm/PackageInstaller;
E/dalvikvm: Could not find class 'android.app.AppOpsManager', referenced from method com.google.android.gms.internal.zzacw.zzg
W/dalvikvm: VFY: unable to resolve check-cast 31 (Landroid/app/AppOpsManager;) in Lcom/google/android/gms/internal/zzacw;
W/dalvikvm: VFY: unable to resolve virtual method 327: Landroid/app/Fragment;.requestPermissions ([Ljava/lang/String;I)V
W/dalvikvm: VFY: unable to resolve virtual method 302: Landroid/app/Fragment;.getChildFragmentManager ()Landroid/app/FragmentManager;
W/dalvikvm: VFY: unable to resolve virtual method 332: Landroid/app/Fragment;.shouldShowRequestPermissionRationale (Ljava/lang/String;)Z
W/EasyPermissions: hasPermissions: API version < M, returning true by default
W/AsyncTask: java.lang.InterruptedException
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1280)
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:219)
at java.util.concurrent.FutureTask.get(FutureTask.java:82)
at android.os.AsyncTask$3.done(AsyncTask.java:295)
at java.util.concurrent.FutureTask$Sync.innerCancel(FutureTask.java:293)
at java.util.concurrent.FutureTask.cancel(FutureTask.java:75)
at android.os.AsyncTask.cancel(AsyncTask.java:467)
at com.medical.germany.reportesgermany.Vista.Splash$MakeRequestTask.doInBackground(Splash.java:324)
at com.medical.germany.reportesgermany.Vista.Splash$MakeRequestTask.doInBackground(Splash.java:300)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:856)
异常的消息是：“El siguienteerrorauurrió：null”。如果您需要更多信息，请询问我。
编辑：错误发生在：
ListLabelsResponse listResponse =
mService.users().labels().list(user).execute();
但我不知道是什么......