我对Android开发很新，我打算做一个与任务相关的应用程序，但是我在寻找完美的例子时面临很多困难。 我已经做了一周的研究并且生气了:( ...我希望你们能帮助我解决我的问题。
最初我在这里阅读了Google提供的任务文档，但无法获得成功，因此弃用了许多API。所以我直接继续从谷歌这里下载任务示例应用程序。
我能够在我的PC上成功构建应用程序，并且我已经从API控制台配置了AUTH。但我得到404禁止错误，它表示访问未配置。
当我在这个谷歌群组中搜索时，我找到了一个简单的示例示例，因为它描述了我在API控制台中启用的任务（也是日历我启用了更安全的一面）。我使用应用包名称和密钥库证书生成了API密钥。在这也我得到相同的404禁止错误，原因是访问没有配置。这是完整的代码。
package com.android.imran.gtasksample;
import com.google.api.client.extensions.android2.AndroidHttp;
import com.google.api.client.googleapis.auth.oauth2.draft10.GoogleAccessProtectedResource;
import com.google.api.client.googleapis.extensions.android2.auth.GoogleAccountManager;
import com.google.api.client.http.HttpResponse;
import com.google.api.client.http.HttpResponseException;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.json.JsonHttpRequest;
import com.google.api.client.http.json.JsonHttpRequestInitializer;
import com.google.api.client.json.jackson.JacksonFactory;
import com.google.api.services.tasks.Tasks;
import com.google.api.services.tasks.TasksRequest;
import com.google.api.services.tasks.Tasks.Tasklists;
import com.google.api.services.tasks.model.Task;
import com.google.api.services.tasks.model.TaskList;
import com.google.api.services.tasks.model.TaskLists;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.accounts.AccountManagerCallback;
import android.accounts.AccountManagerFuture;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ListActivity;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.http.client.ClientProtocolException;
public class GTaskSample extends ListActivity {
private static final Level LOGGING_LEVEL = Level.OFF;
private static final String TAG = "GTaskSample";
final String API_KEY = "AIzaSyDTNHitJIgg_ZP3rJM1uBsXs1_IZGLb_do";
String AUTH_TOKEN_TYPE = "oauth2:https://www.googleapis.com/auth/tasks";
private static final String PREF = "GTaskSamplePref";
private static final int DIALOG_ACCOUNTS = 0;
private static final int MENU_ACCOUNTS = 0;
public static final int REQUEST_AUTHENTICATE = 0;
private final HttpTransport transport = AndroidHttp
.newCompatibleTransport();
Tasks service;
GoogleAccessProtectedResource accessProtectedResource = new GoogleAccessProtectedResource(
null);
// TODO: save auth token in preferences?
GoogleAccountManager accountManager;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
service = Tasks.builder(transport, new JacksonFactory())
.setApplicationName("Google-TasksSample")
.setHttpRequestInitializer(accessProtectedResource)
.setJsonHttpRequestInitializer(
new JsonHttpRequestInitializer() {
public void initialize(JsonHttpRequest request)
throws IOException {
TasksRequest tasksRequest = (TasksRequest) request;
tasksRequest.setPrettyPrint(true);
tasksRequest.setKey(API_KEY);
}
}).build();
accountManager = new GoogleAccountManager(this);
Logger.getLogger("com.google.api.client").setLevel(LOGGING_LEVEL);
gotAccount(false);
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DIALOG_ACCOUNTS:
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Select a Google account");
final Account[] accounts = accountManager.getAccounts();
final int size = accounts.length;
String[] names = new String[size];
for (int i = 0; i < size; i++) {
names[i] = accounts[i].name;
}
builder.setItems(names, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
gotAccount(accounts[which]);
}
});
return builder.create();
}
return null;
}
void gotAccount(boolean tokenExpired) {
SharedPreferences settings = getSharedPreferences(PREF, 0);
String accountName = settings.getString("accountName", null);
Account account = accountManager.getAccountByName(accountName);
if (account != null) {
if (tokenExpired) {
accountManager.invalidateAuthToken(accessProtectedResource
.getAccessToken());
accessProtectedResource.setAccessToken(null);
}
gotAccount(account);
return;
}
showDialog(DIALOG_ACCOUNTS);
}
void gotAccount(final Account account) {
SharedPreferences settings = getSharedPreferences(PREF, 0);
SharedPreferences.Editor editor = settings.edit();
editor.putString("accountName", account.name);
editor.commit();
accountManager.manager.getAuthToken(account, AUTH_TOKEN_TYPE, true,
new AccountManagerCallback<Bundle>() {
public void run(AccountManagerFuture<Bundle> future) {
try {
Bundle bundle = future.getResult();
if (bundle.containsKey(AccountManager.KEY_INTENT)) {
Intent intent = bundle
.getParcelable(AccountManager.KEY_INTENT);
intent.setFlags(intent.getFlags()
& ~Intent.FLAG_ACTIVITY_NEW_TASK);
startActivityForResult(intent,
REQUEST_AUTHENTICATE);
} else if (bundle
.containsKey(AccountManager.KEY_AUTHTOKEN)) {
accessProtectedResource
.setAccessToken(bundle
.getString(AccountManager.KEY_AUTHTOKEN));
String authToken=bundle.getString(AccountManager.KEY_AUTHTOKEN).toString();
Log.d("TasksSample", "Autho Toke ="+authToken);
onAuthToken();
}
} catch (Exception e) {
handleException(e);
}
}
}, null);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case REQUEST_AUTHENTICATE:
if (resultCode == RESULT_OK) {
gotAccount(false);
} else {
showDialog(DIALOG_ACCOUNTS);
}
break;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(0, MENU_ACCOUNTS, 0, "Switch Account");
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_ACCOUNTS:
showDialog(DIALOG_ACCOUNTS);
return true;
}
return false;
}
void handleException(Exception e) {
e.printStackTrace();
if (e instanceof HttpResponseException) {
HttpResponse response = ((HttpResponseException) e).getResponse();
int statusCode = response.getStatusCode();
try {
response.ignore();
} catch (IOException e1) {
e1.printStackTrace();
}
// should only try this once to avoid infinite loop
if (statusCode == 401) {
gotAccount(true);
return;
}
}
Log.e(TAG, e.getMessage(), e);
}
void onAuthToken() {
try {
insertTaskList();
List<String> taskTitles = new ArrayList<String>();
List<TaskList> taskLists = service.tasklists().list().execute()
.getItems();
if (taskLists != null) {
for (TaskList taskList : taskLists) {
List<Task> tasks = service.tasks().list(taskList.getId())
.execute().getItems();
if (tasks != null) {
for (Task task : tasks) {
taskTitles.add(task.getTitle());
}
} else {
taskTitles.add("No sub tasks.");
}
}
} else {
taskTitles.add("No tasks.");
}
setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item,
taskTitles));
} catch (IOException e) {
Log.d(TAG, "Exception ::"+e.getMessage());
handleException(e);
}
setContentView(R.layout.main_task);
}
public void addTaskListAction(View view){
Thread thread=new Thread(new Runnable() {
@Override
public void run() {
insertTaskList();
}
});
thread.start();
}
private void insertTaskList(){
//TODO: testing
try{
TaskList tempTaskList=new TaskList();
tempTaskList.setTitle("Task List :-"+new Random().nextInt(30));
TaskList newTaskList=service.tasklists().insert(tempTaskList).execute();
Log.d(TAG, "Inserted TaskList ::"+newTaskList.toString());
}catch(ClientProtocolException exp){
Log.d(TAG, "ClientProtocolException msg="+exp.getMessage());
}
catch(Exception exp){
Log.d(TAG, "Exception msg="+exp.getMessage());
handleException(exp);
}
}
}
以下是此邮件list中的API控制台图片。我不能粘贴图像，因为我没有权限，我是这个论坛的新手
我正在做的错误是什么，为什么我无法检索特定帐户的任务？这种方法有误吗？建议我这个好技术。请不要忽略这封电子邮件。请
提前致谢 -Solo