Question

我正在制作一个Twitter客户端作为学习Android的练习，并且登录和时间线活动工作正常，但当我点击Action Bar图标时，它会带我到ComposeTweetActivity.java，然后我输入文本（我的推文）并按下推文按钮撰写推文，它没有做任何事情（它应该实际上传到我的Twitter帐户，然后返回我的TimelineActivity.java）。在控制台中，它给出了错误：

04-14 18:10:34.797: E/SQLiteLog(998): (1) no such table: Users

04-14 18:10:34.805: E/SQLiteDatabase(998): android.database.sqlite.SQLiteException: no such table: Users (code 1): , while compiling: INSERT INTO Users(user_name,friends_count,profile_background_image_url,Tweet,user_id,screen_name,Id,tweet_count,profile_image_url,followers_count) VALUES (?,?,?,?,?,?,?,?,?,?)

加上许多其他错误。我的猜测是它必须对Active Android做一些事情，这是我用来保存的数据库。我有很多这个项目的文件，但我会发布ComposeTweetActivity.java，因为它有撰写推文按钮（导致所有错误）和User.java和Tweet.java这些模型对于所有表数据的Active Android（我认为？），以及包含所有错误的控制台。如果您需要我发布更多文件，请高兴。非常感谢你的帮助。

ComposeTweetActivity.java

package com.codepath.apps.mytwitterapp;

import org.json.JSONObject;

import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.codepath.apps.mytwitterapp.models.Tweet;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.JsonHttpResponseHandler;
import com.nostra13.universalimageloader.core.ImageLoader;

public class ComposeTweetActivity extends ActionBarActivity {

    private Button    btnCancel,
                      btnTweet;
    private ImageView ivUserImage;
    private TextView  tvUserName;
    private EditText  etNewTweet;

    private boolean   alreadyToasted = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_compose_tweet);

        setupButtons();
        setupImageView();
        setupTextView();
        setupEditText();
    }

    private void setupButtons() {
        btnCancel = (Button) findViewById(R.id.btnCancel); 
        btnCancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent i = new Intent();
                setResult(RESULT_CANCELED, i);
                finish(); 
            }
        });

        btnTweet = (Button) findViewById(R.id.btnTweet); 
        btnTweet.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String tweetBody = etNewTweet.getText().toString();
                tweet(tweetBody);
            }
        }); 
    }

    private void setupImageView() {
        ivUserImage = (ImageView) findViewById(R.id.ivUserImage);
        Log.d("DEBUG", "TimelineActivity.sScreenName is: " + TimelineActivity.getScreenName());
        Log.d("DEBUG", "TimelineActivity.sImageUrl just before execution of "
                     + "ImageLoader.getInstance().displayImage(mImageUrl, mIvUserImage) is: " 
                     + TimelineActivity.getUserImageUrl());
        ImageLoader.getInstance().displayImage(TimelineActivity.getUserImageUrl(), ivUserImage);
    }

    private void setupTextView() {
        tvUserName = (TextView) findViewById(R.id.tvUserName); 
        tvUserName.setText("@" + TimelineActivity.getScreenName()); 
    }

    private void setupEditText() {
        etNewTweet = (EditText) findViewById(R.id.etNewTweet);  

        // Show soft keyboard when EditText field requests focus
        if (etNewTweet.requestFocus()) {
            InputMethodManager mgr = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            mgr.showSoftInput(etNewTweet, InputMethodManager.SHOW_IMPLICIT); 
        }

        etNewTweet.addTextChangedListener(new TextWatcher() {
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                if (!alreadyToasted && s.length() == 140) {
                    Toast.makeText(ComposeTweetActivity.this, "You've reached the 140 character"
                            + " limit", Toast.LENGTH_LONG).show(); 
                    alreadyToasted = true; 
                }
                else if (s.length() > 140) {
                    etNewTweet.setTextColor(Color.RED); 
                } else {
                    etNewTweet.setTextColor(Color.BLACK); 
                }
            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) { }

            @Override
            public void afterTextChanged(Editable s) { }
        });

    }

    private void tweet(String tweetBody) {
        MyTwitterApp.getRestClient().postTweet(tweetBody, new JsonHttpResponseHandler() {
            @Override
            public void onSuccess(int statusCode, JSONObject jsonTweetResponse) {
                Log.d("DEBUG", "Called onSuccess() in tweet()."); 
                Tweet newTweet = Tweet.fromJson(jsonTweetResponse); 
                new AsyncTweetSave().execute(newTweet); 
                Intent i = new Intent();
                i.putExtra("new_tweet", newTweet);
                setResult(RESULT_OK, i);
                finish(); 
            }   

            @Override
            public void onFailure(Throwable e, JSONObject error) {
                Log.d("DEBUG", "Called onFailure() in getUserScreenName(). Failure message: " 
                                + AsyncHttpResponseHandler.FAILURE_MESSAGE);
                Log.e("ERROR", e.getMessage());
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.compose_tweet, menu);
        return true;
    }
}

User.java

package com.codepath.apps.mytwitterapp.models;

import java.io.Serializable;
import java.util.List;

import org.json.JSONException;
import org.json.JSONObject;

import com.activeandroid.Model;
import com.activeandroid.annotation.Column;
import com.activeandroid.annotation.Table;
import com.codepath.apps.mytwitterapp.UserAccountSettings;
import com.codepath.apps.mytwitterapp.UserInfo;

/**
 * Class acts as a Java-representation of a single user retrieved as a JSONObject from the 
 * Twitter REST API v1.1. Fields are as specified in the API Users object documentation. 
 */
@Table(name = "Users")
public class User extends Model implements Serializable {

    @Column(name = "user_name")
    private String name;
    @Column(name = "user_id", unique = true, onUniqueConflict = Column.ConflictAction.REPLACE)
    private long   userId;                      // User ID
    @Column(name = "screen_name")
    private String screenName;
    @Column(name = "profile_image_url")
    private String profileImageUrl;
    @Column(name = "profile_background_image_url")
    private String profileBackgroundImageUrl;               
    @Column(name = "tweet_count")
    private int    tweetCount;                  // Referred to as statuses_count in Twitter API
    @Column(name = "followers_count")
    private int    followersCount;
    @Column(name = "friends_count") 
    private int    friendsCount;

    @Column(name = "Tweet")                     // Created for ActiveAndroid to establish a direct  
    private Tweet  tweet;                       // relationship with the Tweets table

    public User() {                             // Empty-argument constructor required by ActiveAndroid
        super(); 
    }

    public String getName() {
        return name;
    }

    public long getUserId() {
        return userId;
    }

    public String getScreenName() {
        return screenName;
    }

    public String getProfileImageUrl() {
        return profileImageUrl;
    }

    public String getProfileBackgroundImageUrl() {
        return profileBackgroundImageUrl;
    }

    public int getNumTweets() {
        return tweetCount;
    }

    public int getFollowersCount() {
        return followersCount;
    }

    public int getFriendsCount() {
        return friendsCount;
    }

    // Optional helper method for ActiveAndroid to establish a direct relationship with the 
    // UserAccountSettings table
    public List<UserAccountSettings> getUserAccountSettings() {
        return getMany(UserAccountSettings.class, "Users");
    }

    // Optional helper method for ActiveAndroid to establish a direct relationship with the 
    // UserInfo table
    public List<UserInfo> getUserInfo() {
        return getMany(UserInfo.class, "Users");
    }

    public static User fromJson(JSONObject jsonObject) {
        User u = new User();
        try {
            u.name                   = jsonObject.getString("name");
            u.userId                         = jsonObject.getLong("id");
            u.screenName                 = jsonObject.getString("screen_name");
            u.profileImageUrl            = jsonObject.getString("profile_image_url");
            u.profileBackgroundImageUrl = jsonObject.getString("profile_background_image_url");
            u.tweetCount                 = jsonObject.getInt("statuses_count");
            u.followersCount             = jsonObject.getInt("followers_count");
            u.friendsCount           = jsonObject.getInt("friends_count");
        } catch (JSONException e) {
            e.printStackTrace();
        }
        return u;
    }
}

Tweet.java

package com.codepath.apps.mytwitterapp.models;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

import com.activeandroid.ActiveAndroid;
import com.activeandroid.Model;
import com.activeandroid.annotation.Column;
import com.activeandroid.annotation.Table;

/**
 * Class acts as a Java-representation of a single tweet retrieved as a JSONObject from the 
 * Twitter REST API v1.1. Fields are as specified in the API Tweets object documentation. 
 */
@Table(name = "Tweets")
public class Tweet extends Model implements Serializable {

    @Column(name = "max_id")
    private static long maxId;  // ID of the last (ie, earliest-timestamped) tweet to be processed in the current JSONArray

    @Column(name = "tweet_id", unique = true, onUniqueConflict = Column.ConflictAction.REPLACE)
    private long        tweetId;    // Tweet ID
    @Column(name = "created_at")
    private String      createdAt; 
    @Column(name = "tweet_body")
    private String      body;
    @Column(name = "favorited")
    private boolean     favorited;
    @Column(name = "retweeted")
    private boolean     retweeted;
    @Column(name = "user")
    private User        user;

    public Tweet() {                // Empty-argument constructor required by ActiveAndroid
        super(); 
    }   

    public static long getMaxId() {
        return maxId;
    }

    public static String getMaxIdAsString() {
        return String.valueOf(maxId);
    }

    public static void decrementMaxId() {
        maxId -= 1; 
    }

    public long getTweetId() {
        return tweetId;
    }

    public String getCreatedAt() {
        return createdAt;
    }

    public String getBody() {
        return body;
    }

    public boolean isFavorited() {
        return favorited;
    }

    public boolean isRetweeted() {
        return retweeted;
    }

    public User getUser() {
        return user;
    }

    // Optional helper method for ActiveAndroid to establish a direct relationship with the Users table
    public List<User> getUsers() {
        return getMany(User.class, "Tweets");
    }

    public static Tweet fromJson(JSONObject jsonObject) {
        Tweet tweet = new Tweet();
        try {
            tweet.tweetId        = jsonObject.getLong("id");
            tweet.createdAt = jsonObject.getString("created_at");
            tweet.body   = jsonObject.getString("text");
            tweet.favorited = jsonObject.getBoolean("favorited");
            tweet.retweeted = jsonObject.getBoolean("retweeted");
            tweet.user   = User.fromJson(jsonObject.getJSONObject("user"));
        } catch (JSONException e) {
            e.printStackTrace();
            return null;
        }
        return tweet;
    }

    public static ArrayList<Tweet> fromJson(JSONArray jsonArray) {
        ArrayList<Tweet> tweets = new ArrayList<Tweet>(jsonArray.length());

        for (int i=0; i < jsonArray.length(); i++) {
            JSONObject tweetJson = null;
            try {
                tweetJson = jsonArray.getJSONObject(i);
            } catch (Exception e) {
                e.printStackTrace();
                continue;
            }

            Tweet tweet = Tweet.fromJson(tweetJson);
            if (tweet != null) {
                maxId = tweet.getTweetId();
                tweets.add(tweet);
            }

        }
        return tweets;
    }

    public static void saveTweet(Tweet tweet) {
        tweet.user.save();
        tweet.save();
    }

    public static void saveTweets(ArrayList<Tweet> tweets) {
        ActiveAndroid.beginTransaction();
        try {
            for (int i = 0; i < tweets.size(); i++) {
                Tweet t = tweets.get(i);
                Log.d("DEBUG", "Inside saveTweets(ArrayList<Tweet>), current tweet is: "  + t.toString());
                if (t != null) {
                    if (t.user != null) {
                        t.user.save();
                    } 
                    t.save(); 
                }
            }
            ActiveAndroid.setTransactionSuccessful();
        } finally {
            ActiveAndroid.endTransaction(); 
        }
    } 
}

控制台充满了错误：

 04-14 18:10:26.401: D/dalvikvm(998): GC_CONCURRENT freed 261K, 4% free 8611K/8967K, paused 10ms+1ms, total 16ms
    04-14 18:10:26.745: D/dalvikvm(998): GC_CONCURRENT freed 353K, 5% free 8646K/9095K, paused 11ms+1ms, total 17ms
    04-14 18:10:26.893: D/DEBUG(998): Called UserAccountSettings.fromJson(...). mScreenName is: noniazure
    04-14 18:10:27.409: D/dalvikvm(998): GC_FOR_ALLOC freed 188K, 6% free 8683K/9159K, paused 2ms, total 3ms
    04-14 18:10:27.409: D/dalvikvm(998): GC_FOR_ALLOC freed 140K, 7% free 8673K/9287K, paused 3ms, total 3ms
    04-14 18:10:27.417: D/dalvikvm(998): GC_FOR_ALLOC freed 3K, 6% free 8790K/9287K, paused 4ms, total 4ms
    04-14 18:10:27.417: I/dalvikvm-heap(998): Grow heap (frag case) to 8.726MB for 117780-byte allocation
    04-14 18:10:27.417: D/dalvikvm(998): GC_FOR_ALLOC freed 182K, 8% free 8722K/9415K, paused 3ms, total 3ms
    04-14 18:10:27.445: D/dalvikvm(998): GC_CONCURRENT freed 134K, 5% free 8972K/9415K, paused 11ms+1ms, total 14ms
    04-14 18:10:27.473: D/OpenGLRenderer(998): TextureCache::get: create texture(0xb7d591e8): name, size, mSize = 92, 4, 1127492
    04-14 18:10:27.493: D/dalvikvm(998): GC_CONCURRENT freed 332K, 5% free 9053K/9479K, paused 12ms+1ms, total 16ms
    04-14 18:10:27.513: D/OpenGLRenderer(998): TextureCache::get: create texture(0xb7d9fc78): name, size, mSize = 95, 9216, 1136708
    04-14 18:10:27.513: D/OpenGLRenderer(998): TextureCache::get: create texture(0xb7d9f130): name, size, mSize = 96, 9216, 1145924
    04-14 18:10:27.525: D/OpenGLRenderer(998): TextureCache::get: create texture(0xb7d8b9c8): name, size, mSize = 98, 9216, 1155140
    04-14 18:10:27.529: D/OpenGLRenderer(998): TextureCache::get: create texture(0xb7e2eb40): name, size, mSize = 99, 9216, 1164356
    04-14 18:10:34.145: D/OpenGLRenderer(998): TextureCache::get: create texture(0xb7d68d78): name, size, mSize = 101, 324, 1164680
    04-14 18:10:34.229: D/dalvikvm(998): GC_FOR_ALLOC freed 536K, 8% free 8745K/9479K, paused 3ms, total 3ms
    04-14 18:10:34.237: I/dalvikvm-heap(998): Grow heap (frag case) to 9.449MB for 921612-byte allocation
    04-14 18:10:34.249: D/dalvikvm(998): GC_CONCURRENT freed 4K, 8% free 9641K/10439K, paused 10ms+0ms, total 14ms
    04-14 18:10:34.261: D/DEBUG(998): TimelineActivity.sScreenName is: noniazure
    04-14 18:10:34.261: D/DEBUG(998): TimelineActivity.sImageUrl just before execution of ImageLoader.getInstance().displayImage(mImageUrl, mIvUserImage) is: null
    04-14 18:10:34.297: W/EGL_emulation(998): eglSurfaceAttrib not implemented
    04-14 18:10:34.313: D/OpenGLRenderer(998): TextureCache::get: create texture(0xb7d34e68): name, size, mSize = 104, 9216, 1173896
    04-14 18:10:34.337: D/OpenGLRenderer(998): TextureCache::get: create texture(0xb7d64d60): name, size, mSize = 109, 100, 1173996
    04-14 18:10:34.677: D/DEBUG(998): Inside saveTweets(ArrayList<Tweet>), current tweet is: Tweets@null
    04-14 18:10:34.677: E/SQLiteLog(998): (1) no such table: Users
    04-14 18:10:34.677: E/SQLiteDatabase(998): Error inserting user_name=Forbes Tech News friends_count=16449 profile_background_image_url=http://pbs.twimg.com/profile_background_images/92775085/twitter-background.jpg Tweet=null user_id=14885549 screen_name=ForbesTech Id=null tweet_count=41653 profile_image_url=http://pbs.twimg.com/profile_images/828527305/technology_normal.jpg followers_count=1154679
    04-14 18:10:34.677: E/SQLiteDatabase(998): android.database.sqlite.SQLiteException: no such table: Users (code 1): , while compiling: INSERT INTO Users(user_name,friends_count,profile_background_image_url,Tweet,user_id,screen_name,Id,tweet_count,profile_image_url,followers_count) VALUES (?,?,?,?,?,?,?,?,?,?)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:493)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.activeandroid.Model.save(Unknown Source)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.codepath.apps.mytwitterapp.models.Tweet.saveTweets(Tweet.java:137)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.codepath.apps.mytwitterapp.AsyncTweetsSave.doInBackground(AsyncTweetsSave.java:17)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.codepath.apps.mytwitterapp.AsyncTweetsSave.doInBackground(AsyncTweetsSave.java:1)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.os.AsyncTask$2.call(AsyncTask.java:287)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.FutureTask.run(FutureTask.java:137)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.lang.Thread.run(Thread.java:856)
    04-14 18:10:34.677: E/SQLiteLog(998): (1) no such table: Tweets
    04-14 18:10:34.677: E/SQLiteDatabase(998): Error inserting retweeted=false max_id=455761612532891649 favorited=false tweet_id=455769106550382593 created_at=Mon Apr 14 18:06:37 +0000 2014 tweet_body=CCP shuts down their in-development 'World of Darkness' MMO http://t.co/wZv6woImaZ Id=null user=-1
    04-14 18:10:34.677: E/SQLiteDatabase(998): android.database.sqlite.SQLiteException: no such table: Tweets (code 1): , while compiling: INSERT INTO Tweets(retweeted,max_id,favorited,tweet_id,created_at,tweet_body,Id,user) VALUES (?,?,?,?,?,?,?,?)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:493)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.activeandroid.Model.save(Unknown Source)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.codepath.apps.mytwitterapp.models.Tweet.saveTweets(Tweet.java:139)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.codepath.apps.mytwitterapp.AsyncTweetsSave.doInBackground(AsyncTweetsSave.java:17)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.codepath.apps.mytwitterapp.AsyncTweetsSave.doInBackground(AsyncTweetsSave.java:1)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.os.AsyncTask$2.call(AsyncTask.java:287)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.FutureTask.run(FutureTask.java:137)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.lang.Thread.run(Thread.java:856)
    04-14 18:10:34.677: D/DEBUG(998): Inside saveTweets(ArrayList<Tweet>), current tweet is: Tweets@null
    04-14 18:10:34.677: E/SQLiteLog(998): (1) no such table: Users
    04-14 18:10:34.677: E/SQLiteDatabase(998): Error inserting user_name=Gizmodo friends_count=77 profile_background_image_url=http://pbs.twimg.com/profile_background_images/436934792/gizmodo-twitter-background-final.jpg Tweet=null user_id=2890961 screen_name=Gizmodo Id=null tweet_count=24648 profile_image_url=http://pbs.twimg.com/profile_images/1860214036/Gizmodo-Twitter-Avatar_normal.jpeg followers_count=887873
    04-14 18:10:34.677: E/SQLiteDatabase(998): android.database.sqlite.SQLiteException: no such table: Users (code 1): , while compiling: INSERT INTO Users(user_name,friends_count,profile_background_image_url,Tweet,user_id,screen_name,Id,tweet_count,profile_image_url,followers_count) VALUES (?,?,?,?,?,?,?,?,?,?)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:493)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.activeandroid.Model.save(Unknown Source)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.codepath.apps.mytwitterapp.models.Tweet.saveTweets(Tweet.java:137)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.codepath.apps.mytwitterapp.AsyncTweetsSave.doInBackground(AsyncTweetsSave.java:17)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at com.codepath.apps.mytwitterapp.AsyncTweetsSave.doInBackground(AsyncTweetsSave.java:1)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.os.AsyncTask$2.call(AsyncTask.java:287)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.FutureTask.run(FutureTask.java:137)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
    04-14 18:10:34.677: E/SQLiteDatabase(998):  at java.lang.Thread.run(Thread.java:856)
    04-14 18:10:34.677: E/SQLiteLog(998): (1) no such table: Tweets
    04-14 18:10:34.677: E/SQLiteDatabase(998): Error inserting retweeted=false max_id=455761612532891649 favorited=false tweet_id=455769104461594624 created_at=Mon Apr 14

..以及之前和之后......

ComposeTweetActivity的布局：

activity_compose_tweet.xml

Answer 1

善良，答案最终成为模拟器中的错误。事实证明，使用模型从Twitter API中绘制的Twitter客户端（我使用的是Active Android，但您也可以只使用原始的SQLite数据库表）...只会在未绘制表的情况下填充数据已经。因此，在我的情况下，进行大量更改并重新运行应用程序，意味着您要求重新填充并创建数据表，但它已经创建。

所以解决方案是在你的模拟器中卸载应用程序（或者只是使用一个新的模拟器）并重新运行程序！这将从头开始再次创建它，这是您的代码所要求的。它就像一个魅力。如此简单，却又如此棘手。＆GT; _＆LT;

Answer 2

你可以用我的方法测试添加到AndroidManifest.xml：

<meta-data android:name="AA_MODELS" android:value="com.codepath.apps.mytwitterapp.models.User, com.codepath.apps.mytwitterapp.models.Tweet" />

错误：没有这样的表用户 - 活动Android

2 个答案: