我正在制作新闻应用并在我的代码中出现以下错误。
我的数据库中出现以下错误
FATAL EXCEPTION: main
Process: com.edgar.yodgorbekkomilo.newsapp, PID: 1328
android.database.sqlite.SQLiteException: near “)”: syntax error (code 1): , while compiling: CREATE TABLE IF NOT EXISTS article ( _id INTEGER PRIMARY KEY AUTOINCREMENT, title TEXT NOT NULL, title_description TEXT, author TEXT, );
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteStatement.(SQLiteStatement.java:31)
at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1677)
at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1608)
at com.edgar.yodgorbekkomilo.newsapp.ArticleSQLiteOpenHelper.onCreate(ArticleSQLiteOpenHelper.java:85)
at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:294)
at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:194)
at com.edgar.yodgorbekkomilo.newsapp.provider.BaseContentProvider.insert(BaseContentProvider.java:81)
at com.edgar.yodgorbekkomilo.newsapp.provider.ArticleProvider.insert(ArticleProvider.java:68)
at android.content.ContentProvider$Transport.insert(ContentProvider.java:267)
at android.content.ContentResolver.insert(ContentResolver.java:1539)
at com.edgar.yodgorbekkomilo.newsapp.NewsDetailActivity$4.onClick(NewsDetailActivity.java:126)
at android.view.View.performClick(View.java:6256)
at android.view.View$PerformClick.run(View.java:24701)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
在我的数据库类
下面public class ArticleSQLiteOpenHelper extends SQLiteOpenHelper{
public static final String DATABASE_FILE_NAME = "article.db";
// @formatter:off
public static final String SQL_CREATE_TABLE_ARTICLE = "CREATE TABLE IF NOT EXISTS "
+ ArticleColumns.TABLE_NAME + " ( "
+ ArticleColumns._ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
+ ArticleColumns.TITLE + " TEXT NOT NULL, "
+ ArticleColumns.TITLE_DESCRIPTION + " TEXT, "
+ ArticleColumns.AUTHOR + " TEXT, "+
" );";
在我实现内容提供商的NewsDetailActivity代码下面。
public class NewsDetailActivity extends AppCompatActivity {
ImageButton addToFavoritesBtn;
Article article;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.news_details);
Toolbar myChildToolbar =
(Toolbar) findViewById(R.id.detail_toolbar);
setSupportActionBar(myChildToolbar);
// Get a support ActionBar corresponding to this toolbar
ActionBar ab = getSupportActionBar();
ab.setDisplayHomeAsUpEnabled(true);
// Enable the Up button
getSupportActionBar().setDisplayShowTitleEnabled(false);
final Article article = (Article) getIntent().getParcelableExtra("myDataKey");
FloatingActionButton share = (FloatingActionButton)findViewById(R.id.share_fab);
ImageButton shareButton = (ImageButton)findViewById(R.id.share_button);
shareButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
String articleDescription = article.getDescription() ;
String articleTitle = article.getTitle();
sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, articleDescription);
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, articleTitle);
startActivity(Intent.createChooser(sharingIntent, "Share using"));
}
});
share.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
String articleDescription = article.getDescription() ;
String articleTitle = article.getTitle();
sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, articleDescription);
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, articleTitle);
startActivity(Intent.createChooser(sharingIntent, "Share using"));
}
});
TextView textView = (TextView) findViewById(R.id.article_title);
final String articleTitle = article.getTitle();
if (articleTitle != null) {
textView.setText(articleTitle);
}
TextView textView1 = (TextView) findViewById(R.id.article_author);
final String articleAuthor = article.getAuthor();
if (articleAuthor != null) {
textView1.setText(articleAuthor);
}
TextView textView2 = (TextView) findViewById(R.id.article_body);
String articleDescription = article.getDescription();
if (articleDescription != null) {
textView2.setText(articleDescription);
}
Button button = (Button) findViewById(R.id.article_url);
final String articleUrl = article.getUrl();
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(Intent.ACTION_VIEW,
Uri.parse(articleUrl));
startActivity(intent);
}
});
Picasso.with(this).load(article.getUrlToImage()).into((ImageView) findViewById(R.id.photo));
addToFavoritesBtn = (ImageButton) findViewById(R.id.favorite_button);
addToFavoritesBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ContentValues values = new ContentValues();
values.put(ArticleColumns._ID, "INTEGER PRIMARY KEY AUTOINCREMENT"); //Value bro example 1
values.put(ArticleColumns.TITLE, article.getTitle() ); // name
values.put(ArticleColumns.TITLE_DESCRIPTION, article.getDescription());
values.put(ArticleColumns.AUTHOR, article.getAuthor());
getContentResolver().insert(ArticleColumns.CONTENT_URI, values);
}
});
}
// String articlePublisheAt = article.getPublishedAt();
// TextView textView3 = (TextView) findViewById(R.id.textPublisher);
// if (articlePublisheAt != null) {
// textView3.setText(articlePublisheAt);
//<TextView
// android:id="@+id/textPublisher"
// style="?android:attr/textAppearanceLarge"
// android:layout_width="match_parent"
// android:layout_height="wrap_content"
// android:textColor="#fff"
//android:textStyle="bold"
//android:textSize="20sp"
//android:lineSpacingMultiplier="0.9"/>
//}
}
删除 , 后，我现在收到以下错误： -
FATAL EXCEPTION: main Process: com.edgar.yodgorbekkomilo.newsapp, PID: 28122 android.database.sqlite.SQLiteDatatypeMismatchException: datatype mismatch (code 20) at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method) –
答案 0 :(得分：3)
您应该删除另一个逗号（,），在该行的末尾：
ArticleColumns.AUTHOR + " TEXT, "
答案 1 :(得分：0)
我在create语句中看到一个额外的“，”。 CREATE TABLE IF NOT EXISTS文章（_id INTEGER PRIMARY KEY AUTOINCREMENT，title TEXT NOT NULL，title_description TEXT，author TEXT， ）;