日期:2014-05-16  浏览次数:20718 次

问题分析:java.lang.IllegalStateException: getDatabase called recursively

问题场景:

在app首次启动使用到db的时候,后台提示如下错误信息

java.lang.IllegalStateException: getDatabase called recursively
	at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:204)
	at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)

问题产生的原因分析

app的db想关的操作SQLiteOpenHelper的实现类中,app在publicvoid onCreate(SQLiteDatabase db)或者是publicvoid onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)中在其他线程或者是在这些方法体有其他的db模块调用到了getWritableDatabase进行db的新增,修改,删除等操作就会导致此问题

?解决方案:

如果在onCreate或者是onUpdate的过程中有调用到其他模块进行相同db操作,则需要进行类似于下面内容的处理:

private SQLiteDatabase mDefaultWritableDatabase = null;

@Override
	public SQLiteDatabase getWritableDatabase() {
		final SQLiteDatabase db;
		if(mDefaultWritableDatabase != null){
			db = mDefaultWritableDatabase;
		} else {
			db = super.getWritableDatabase();
		}
		return db;
	}

@Override
	public void onCreate(SQLiteDatabase db) {
		this.mDefaultWritableDatabase = db;
}

@Override
	public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
		this.mDefaultWritableDatabase = db;
}

@Override
	public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
		this.mDefaultWritableDatabase = db;
}

?