Android SQLite:加载微调器DynamicCaly

我尝试了几种从SQLite数据库加载微调器的不同方法，这种方法似乎是最简单、最简单的。唯一的问题是，因为我已经添加了几个我自己的变量（另外三个）。当我运行编辑后的版本以满足我的测试需要时，除了微调器没有填充数据库中的数据外，所有内容都正常运行

喷丝头负荷等级 LOGCAT 有了原木猫，我就可以做一些新手的事情了，哈哈。。但我已经看了好几遍，和原稿并排看了一遍，不确定我可能把什么搞砸了。希望有人能为我解释一下，如果需要更多信息，请告诉我。谢谢

为什么要引用微调器两次

 spinner = (Spinner) findViewById(R.id.spinLoad_spinner);

这里

这里呢

 private void fillData() {
        try {
            Cursor coloursCursor;
            spinner = (Spinner) findViewById(R.id.spinLoad_spinner);
....

---

啊，当我把它移到filldata（）时，忘了删除它；在去掉额外的引用后，仍然存在相同的问题，，，尝试修复sql错误

12-26 23:40:00.628:E/数据库（30879）：error inserting place=zyxwvutsr returned=null serial=123456789 name=abcdefghij

我将“returned”变量设置为String returned=“someText”，但仍然出错。。希望当我今天下班后再把它弄得乱七八糟的时候，也许我会找出问题的原因

12-26 23:39:33.409: W/System.err(30879): java.lang.NullPointerException
12-26 23:39:33.409: W/System.err(30879):    at com.my.examples.SpinnerLoad.fillData(SpinnerLoad.java:59)
12-26 23:39:33.409: W/System.err(30879):    at com.my.examples.SpinnerLoad.onCreate(SpinnerLoad.java:30)
12-26 23:39:33.418: W/System.err(30879):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-26 23:39:33.418: W/System.err(30879):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
12-26 23:39:33.418: W/System.err(30879):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
12-26 23:39:33.418: W/System.err(30879):    at android.app.ActivityThread.access$2300(ActivityThread.java:125)
12-26 23:39:33.418: W/System.err(30879):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
12-26 23:39:33.418: W/System.err(30879):    at android.os.Handler.dispatchMessage(Handler.java:99)
12-26 23:39:33.418: W/System.err(30879):    at android.os.Looper.loop(Looper.java:123)
12-26 23:39:33.418: W/System.err(30879):    at android.app.ActivityThread.main(ActivityThread.java:4627)
12-26 23:39:33.428: W/System.err(30879):    at java.lang.reflect.Method.invokeNative(Native Method)
12-26 23:39:33.428: W/System.err(30879):    at java.lang.reflect.Method.invoke(Method.java:521)
12-26 23:39:33.428: W/System.err(30879):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
12-26 23:39:33.428: W/System.err(30879):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
12-26 23:39:33.428: W/System.err(30879):    at dalvik.system.NativeStart.main(Native Method)
12-26 23:40:00.628: E/Database(30879): Error inserting place=zyxwvutsr returned=null serial=123456789 name=abcdefghij
12-26 23:40:00.628: E/Database(30879): android.database.sqlite.SQLiteConstraintException: error code 19: constraint failed
12-26 23:40:00.628: E/Database(30879):  at android.database.sqlite.SQLiteStatement.native_execute(Native Method)
12-26 23:40:00.628: E/Database(30879):  at android.database.sqlite.SQLiteStatement.execute(SQLiteStatement.java:55)
12-26 23:40:00.628: E/Database(30879):  at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1549)
12-26 23:40:00.628: E/Database(30879):  at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1410)
12-26 23:40:00.628: E/Database(30879):  at com.my.examples.Db.createEntry(Db.java:56)
12-26 23:40:00.628: E/Database(30879):  at com.my.examples.SpinnerLoad.onClick(SpinnerLoad.java:86)
12-26 23:40:00.628: E/Database(30879):  at android.view.View.performClick(View.java:2408)
12-26 23:40:00.628: E/Database(30879):  at android.view.View$PerformClick.run(View.java:8816)
12-26 23:40:00.628: E/Database(30879):  at android.os.Handler.handleCallback(Handler.java:587)
12-26 23:40:00.628: E/Database(30879):  at android.os.Handler.dispatchMessage(Handler.java:92)
12-26 23:40:00.628: E/Database(30879):  at android.os.Looper.loop(Looper.java:123)
12-26 23:40:00.628: E/Database(30879):  at android.app.ActivityThread.main(ActivityThread.java:4627)
12-26 23:40:00.628: E/Database(30879):  at java.lang.reflect.Method.invokeNative(Native Method)
12-26 23:40:00.628: E/Database(30879):  at java.lang.reflect.Method.invoke(Method.java:521)
12-26 23:40:00.628: E/Database(30879):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
12-26 23:40:00.628: E/Database(30879):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
12-26 23:40:00.628: E/Database(30879):  at dalvik.system.NativeStart.main(Native Method)
12-26 23:40:00.628: W/System.err(30879): java.lang.NullPointerException
12-26 23:40:00.639: W/System.err(30879):    at com.my.examples.SpinnerLoad.fillData(SpinnerLoad.java:59)
12-26 23:40:00.639: W/System.err(30879):    at com.my.examples.SpinnerLoad.onClick(SpinnerLoad.java:89)
12-26 23:40:00.639: W/System.err(30879):    at android.view.View.performClick(View.java:2408)
12-26 23:40:00.639: W/System.err(30879):    at android.view.View$PerformClick.run(View.java:8816)
12-26 23:40:00.639: W/System.err(30879):    at android.os.Handler.handleCallback(Handler.java:587)
12-26 23:40:00.639: W/System.err(30879):    at android.os.Handler.dispatchMessage(Handler.java:92)
12-26 23:40:00.639: W/System.err(30879):    at android.os.Looper.loop(Looper.java:123)
12-26 23:40:00.639: W/System.err(30879):    at android.app.ActivityThread.main(ActivityThread.java:4627)
12-26 23:40:00.639: W/System.err(30879):    at java.lang.reflect.Method.invokeNative(Native Method)
12-26 23:40:00.649: W/System.err(30879):    at java.lang.reflect.Method.invoke(Method.java:521)
12-26 23:40:00.649: W/System.err(30879):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
12-26 23:40:00.649: W/System.err(30879):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
12-26 23:40:00.649: W/System.err(30879):    at dalvik.system.NativeStart.main(Native Method)

 spinner = (Spinner) findViewById(R.id.spinLoad_spinner);

fillData();
spinner = (Spinner) findViewById(R.id.spinLoad_spinner);
....

 private void fillData() {
        try {
            Cursor coloursCursor;
            spinner = (Spinner) findViewById(R.id.spinLoad_spinner);
....