public class MainActivity extends BaseActivity implements View.OnClickListener, LoaderManager.LoaderCallbacks<Cursor>{
private static final String TAG = "ContentProviderDemo";
private int recentOpPerfomed;
private final int LOAD_CONTACTS=1;
private final int WRITE_CONTACTS=2;
private final int UPDATE_CONTACTS=3;
private final int DELETE_CONTACTS=4;
private boolean firstTimeLoaded=false;
private TextView textViewQueryResult;
private Button buttonLoadData, buttonAddContact,buttonRemoveContact,buttonUpdateContact, buttonPhotoTagActivity;
private ContentResolver contentResolver;
private EditText editTextContactName;
private CursorLoader mContactsLoader;
private String[] mColumnProjection = new String[]{
ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME_PRIMARY,
ContactsContract.Contacts.HAS_PHONE_NUMBER,
ContactsContract.CommonDataKinds.Phone.NUMBER}
;
private String mSelectionCluse = ContactsContract.Contacts.DISPLAY_NAME_PRIMARY + " = ?";
private String[] mSelectionArguments = new String[]{"Ajay"};
private String mOrderBy = ContactsContract.Contacts.DISPLAY_NAME_PRIMARY;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textViewQueryResult = (TextView) findViewById(R.id.textViewQueryResult);
editTextContactName=(EditText)findViewById(R.id.editTextContactName);
buttonLoadData = (Button) findViewById(R.id.buttonLoadData);
buttonAddContact=(Button)findViewById(R.id.buttonAddContact);
buttonRemoveContact=(Button)findViewById(R.id.buttonRemoveContact);
buttonUpdateContact=(Button)findViewById(R.id.buttonUpdateContact);
buttonPhotoTagActivity=(Button)findViewById(R.id.buttonPhotoTagActivity);
buttonLoadData.setOnClickListener(this);
buttonAddContact.setOnClickListener(this);
buttonRemoveContact.setOnClickListener(this);
buttonUpdateContact.setOnClickListener(this);
buttonPhotoTagActivity.setOnClickListener(this);
contentResolver=getContentResolver();
}
@Override
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
if(i==1){
return new CursorLoader(this,ContactsContract.Contacts.CONTENT_URI,mColumnProjection, null,null,null);
}
return null;
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
if(cursor!=null && cursor.getCount()>0){
StringBuilder stringBuilderQueryResult=new StringBuilder("");
while (cursor.moveToNext()){
if(Integer.parseInt(cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0)
{
// Query phone here. Covered next
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "
+ ContactsContract.Contacts._ID, null, null);
while (phones.moveToNext()) {
String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
Log.i("Number", phoneNumber);
stringBuilderQueryResult.append(cursor.getString(0)+" , "+cursor.getString(1)+
" , "+cursor.getString(2)+" , "+phoneNumber+"\n");
}
phones.close();
}
}
textViewQueryResult.setText(stringBuilderQueryResult.toString());
}else{
textViewQueryResult.setText("No Contacts in device");
}
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
}
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.buttonLoadData:loadContacts();
break;
case R.id.buttonAddContact: addContact();
break;
case R.id.buttonRemoveContact:deleteContact();
break;
case R.id.buttonUpdateContact: modifyCotact();
break;
case R.id.buttonPhotoTagActivity: startPhotoTagActivity();
break;
default:
break;
}
}
private void startPhotoTagActivity(){
startActivity(new Intent(this,PhotoTaggingActivity.class));
}
private void insertContacts(){
String newName=editTextContactName.getText().toString();
if(newName!=null && !newName.equals("") && newName.length()!=0){
ArrayList<ContentProviderOperation> cops=new ArrayList<ContentProviderOperation>();
cops.add(ContentProviderOperation.newInsert(ContactsContract.RawContacts.CONTENT_URI)
.withValue(ContactsContract.RawContacts.ACCOUNT_TYPE,"accountname@gmail.com")
.withValue(ContactsContract.RawContacts.ACCOUNT_NAME, "com.google")
.build());
cops.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI)
.withValueBackReference(ContactsContract.Data.RAW_CONTACT_ID, 0)
.withValue(ContactsContract.Data.MIMETYPE, ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE)
.withValue(ContactsContract.CommonDataKinds.StructuredName.DISPLAY_NAME, editTextContactName.getText().toString())
.build());
try{
getContentResolver().applyBatch(ContactsContract.AUTHORITY,cops);
}catch (Exception exception){
Log.i(TAG,exception.getMessage());
Toast.makeText(this,exception.getMessage(),Toast.LENGTH_SHORT).show();
}
}
}
private void addContact() {
recentOpPerfomed=WRITE_CONTACTS;
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_CONTACTS) == PackageManager.PERMISSION_GRANTED) {
insertContacts();
} else {
requestRunTimePermissions(this,new String[]{Manifest.permission.WRITE_CONTACTS},MY_PERMISSION_REQUEST_WRITE_CONTACTS);
}
}
private void updateContact(){
String [] updateValue=editTextContactName.getText().toString().split(" ");
ContentProviderResult[] result=null;
String targetString=null;
String newString=null;
if(updateValue.length==2){
targetString=updateValue[0];
newString=updateValue[1];
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_CONTACTS) == PackageManager.PERMISSION_GRANTED) {
if(newString!=null && !newString.equals("") && newString.length()!=0)
{
String where= ContactsContract.RawContacts._ID + " = ? ";
String [] params= new String[] {targetString};
ContentResolver contentResolver=getContentResolver();
ContentValues contentValues=new ContentValues();
contentValues.put(ContactsContract.RawContacts.DISPLAY_NAME_PRIMARY,newString);
// UPDATE <table_name> SET column1 = value1, column2 = value2 where column3 = selection_value
contentResolver.update(ContactsContract.RawContacts.CONTENT_URI,contentValues, where,params);
}
}
}
}
private void modifyCotact(){
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_CONTACTS) == PackageManager.PERMISSION_GRANTED) {
updateContact();
} else {
requestRunTimePermissions(this,new String[]{Manifest.permission.WRITE_CONTACTS}, MY_PERMISSION_REQUEST_WRITE_CONTACTS);
}
}
private void removeContacts(){
recentOpPerfomed=DELETE_CONTACTS;
String newName=editTextContactName.getText().toString();
if(newName!=null && !newName.equals("") && newName.length()!=0){
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_CONTACTS) == PackageManager.PERMISSION_GRANTED) {
//display_name = '<entered_value>'
String whereClause=ContactsContract.RawContacts.DISPLAY_NAME_PRIMARY+ " = '"+editTextContactName.getText().toString()+"'";
//DELETE FROM <table_name> where column1 = selection_value
getContentResolver().delete(ContactsContract.RawContacts.CONTENT_URI,whereClause,null);
}
}
}
private void deleteContact(){
recentOpPerfomed=DELETE_CONTACTS;
if(ActivityCompat.checkSelfPermission(this,Manifest.permission.WRITE_CONTACTS)==PackageManager.PERMISSION_GRANTED){
removeContacts();
}else{
requestRunTimePermissions(this,new String[]{Manifest.permission.WRITE_CONTACTS}, MY_PERMISSION_REQUEST_WRITE_CONTACTS);
}
}
private void loadContacts() {
recentOpPerfomed=LOAD_CONTACTS;
if(ActivityCompat.checkSelfPermission(this,Manifest.permission.READ_CONTACTS)==PackageManager.PERMISSION_GRANTED){
Log.i(TAG,"Permisssion is granted");
if (firstTimeLoaded == false) {
getLoaderManager().initLoader(1, null, this);
firstTimeLoaded = true;
} else {
getLoaderManager().restartLoader(1, null, this);
}
}else{
requestRunTimePermissions(this,new String[]{Manifest.permission.READ_CONTACTS}, MY_PERMISSIONS_REQUEST_READ_CONTACTS);
}
}
@Override
public void onRequestPermissionsResult(final int requestCode, @NonNull final String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(permissions.length==1){
if(requestCode==MY_PERMISSIONS_REQUEST_READ_CONTACTS || requestCode==MY_PERMISSION_REQUEST_WRITE_CONTACTS && grantResults[0]==PackageManager.PERMISSION_GRANTED){
switch (recentOpPerfomed){
case WRITE_CONTACTS: addContact();loadContacts();break;
case DELETE_CONTACTS: deleteContact();loadContacts();break;
case UPDATE_CONTACTS: modifyCotact();loadContacts();break;
case LOAD_CONTACTS:loadContacts();
default: break;
}
}
}
}
}
在这上面浪费了差不多一天。试图从联系人APP获取电话号码。 我正在尝试使用Loader检索所有联系人电话号码。 Logcat中我没有正确的解释。任何帮助将不胜感激。我一直在说无效列data1，但什么是无效列data1？