我想将联系电话号码和名称保存到sql数据库。我能够使用editext保存数据库但是当我将我的联系人详细信息传递给数据库app force时关闭。我还添加了阅读联系人的权限，我的数据库工作正常，因为当我使用edittext传递信息时它工作正常。请帮忙......这是我的代码。
P.S。我已经添加了权限，所以不用担心。
public class RegistrationActivity extends Activity {
RegistrationAdapter adapter;
RegistrationOpenHelper helper;
EditText fnameEdit, lnameEdit;
Button submitBtn, resetBtn;
private static final int PICK_CONTACT = 0;
Button button;
TextView name,num;
int number;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.register);
fnameEdit = (EditText) findViewById(R.id.et_fname);
lnameEdit = (EditText) findViewById(R.id.et_lname);
submitBtn = (Button) findViewById(R.id.btn_submit);
//resetBtn = (Button) findViewById(R.id.btn_reset);
adapter = new RegistrationAdapter(this);
submitBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent, PICK_CONTACT);
// String fnameValue = fnameEdit.getText().toString();
//String lnameValue = lnameEdit.getText().toString();
//long val = adapter.insertDetails(fnameValue, lnameValue);
//finish();
}
});}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case PICK_CONTACT:
if (resultCode == Activity.RESULT_OK) {
Uri contactData = data.getData();
Cursor c = managedQuery(contactData, null, null, null, null);
if (c.moveToFirst()) {
String fnameValue = c.getString(c.getColumnIndexOrThrow(ContactsContract.Contacts._ID));
String hasPhone =
c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
if (hasPhone.equalsIgnoreCase("1")) {
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + fnameValue, null, null);
phones.moveToFirst();
String cNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
// Toast.makeText(getApplicationContext(), cNumber, Toast.LENGTH_SHORT).show();
num.setText(cNumber);
String number=num.getText().toString();
long val = adapter.insertDetails(fnameValue, number);
}
}
}
}
}
}
/*resetBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
fnameEdit.setText("");
lnameEdit.setText("");
}
});*/
public class RegistrationAdapter {
SQLiteDatabase database_ob;
RegistrationOpenHelper openHelper_ob;
Context context;
public RegistrationAdapter(Context c) {
context = c;
}
public RegistrationAdapter opnToRead() {
openHelper_ob = new RegistrationOpenHelper(context,
openHelper_ob.DATABASE_NAME, null, openHelper_ob.VERSION);
database_ob = openHelper_ob.getReadableDatabase();
return this;
}
public RegistrationAdapter opnToWrite() {
openHelper_ob = new RegistrationOpenHelper(context,
openHelper_ob.DATABASE_NAME, null, openHelper_ob.VERSION);
database_ob = openHelper_ob.getWritableDatabase();
return this;
}
public void Close() {
database_ob.close();
}
public long insertDetails(String fname, String lname) {
ContentValues contentValues = new ContentValues();
contentValues.put(openHelper_ob.FNAME, fname);
contentValues.put(openHelper_ob.LNAME, lname);
opnToWrite();
long val = database_ob.insert(openHelper_ob.TABLE_NAME, null,
contentValues);
Close();
return val;
}
public Cursor queryName() {
String[] cols = { openHelper_ob.KEY_ID, openHelper_ob.FNAME,
openHelper_ob.LNAME };
opnToWrite();
Cursor c = database_ob.query(openHelper_ob.TABLE_NAME, cols, null,
null, null, null, null);
return c;
}
public Cursor queryAll(int nameId) {
String[] cols = { openHelper_ob.KEY_ID, openHelper_ob.FNAME,
openHelper_ob.LNAME };
opnToWrite();
Cursor c = database_ob.query(openHelper_ob.TABLE_NAME, cols,
openHelper_ob.KEY_ID + "=" + nameId, null, null, null, null);
return c;
}
public long updateldetail(int rowId, String fname, String lname) {
ContentValues contentValues = new ContentValues();
contentValues.put(openHelper_ob.FNAME, fname);
contentValues.put(openHelper_ob.LNAME, lname);
opnToWrite();
long val = database_ob.update(openHelper_ob.TABLE_NAME, contentValues,
openHelper_ob.KEY_ID + "=" + rowId, null);
Close();
return val;
}
public int deletOneRecord(int rowId) {
// TODO Auto-generated method stub
opnToWrite();
int val = database_ob.delete(openHelper_ob.TABLE_NAME,
openHelper_ob.KEY_ID + "=" + rowId, null);
Close();
return val;
}
}
----------------------------------------------- ---------------那是日志文件---------
05-10 17:05:26.125 3937-3937/braindevs.other E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: braindevs.other, PID: 3937
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=0, result=-1, data=Intent { dat=content://com.android.contacts/contacts/lookup/0r1-3333332F2F3737373733/1 flg=0x1 }} to activity {braindevs.other/braindevs.other.RegistrationActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
at android.app.ActivityThread.deliverResults(ActivityThread.java:3539)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3582)
at android.app.ActivityThread.access$1300(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1327)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
at braindevs.other.RegistrationActivity.onActivityResult(RegistrationActivity.java:71)
at android.app.Activity.dispatchActivityResult(Activity.java:6139)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3535)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3582)
at android.app.ActivityThread.access$1300(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1327)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
答案 0 :(得分：0)
问题是由NPE（NullPointerException）在尝试设置空文本视图的文本时引起的。在您的代码中，这可能是name或num。我建议你把它添加到你的onCreate：
name = (TextView) findViewById(R.id.yourNameTextView);
num = (TextView) findViewById(R.id.yourNumberTextView);
答案 1 :(得分：0)
这是一个愚蠢的错误，但我想出来，并感谢matei trandafir的帮助。我使用num来获取联系电话号码，但它是我用来显示的textview但是当我将号码传递到数据库时我忘了删除它抱歉这里是更正后的代码部分。希望它有帮助
if (hasPhone.equalsIgnoreCase("1")) {
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + fnameValue, null, null);
phones.moveToFirst();
String cNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
// Toast.makeText(getApplicationContext(), cNumber, Toast.LENGTH_SHORT).show();
//num.setText(cNumber);
//number=num.getText().toString();
long val = adapter.insertDetails(fnameValue, cNumber);