由于基线代码，我从 MainActivity 类中获取 FirstConnection 类：
Intent intent = new Intent(MainActivity.this,FirstConnection.class) ;
startActivityForResult(intent, REQUEST_CODE_INITILIZATION);
完成 FirstConnection 类的活动后，我使用以下代码返回 MainActivity 类：
Intent returnIntent = new Intent();
setResult(RESULT_OK, returnIntent);
finish();
然后在 MainActivity 类中，我使用以下代码：
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE_INITILIZATION) {
if (resultCode == Activity.RESULT_OK) { // <= !! Problem HERE !!
// code
}
if (resultCode == RESULT_CANCELED) {
// code
}
}
else
super.onActivityResult(requestCode, resultCode, data);
}
我的问题是：当我使用 resultCode == RESULT_OK 返回 MainActivity 类时，没有办法，我的代码没有＆ ＃39;进入 IF条件，尽管此条件为真！
我真的不明白，我确定 resultCode == RESULT_OK ，因为我已经检查了DEBUG模式。
是否有人有类似的问题？
谢谢！
更新
我发布了两个班级内容。
MainActivity
public class MainActivity extends Activity implements NamesAdapterListener{
private int REQUEST_CODE_INITILIZATION = 2 ;
private List<TitleList> listExisting ;
private SQliteHelper db ;
private TextView titleV;
private CheckBox checkPartage;
private CheckBox checkLocal;
private EditText input;
private LinearLayout layout;
private LayoutInflater mInflater;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// boolean resultInitilization = appInitialization();
// if (resultInitilization == false){
// Intent intent = new Intent(MainActivity.this,FirstConnection.class) ;
// startActivityForResult(intent, REQUEST_CODE_INITILIZATION);
// }
/**
* Opening of the database
*/
db = new SQliteHelper( this ) ;
/**
* Initialization of the local database for the 1st time of use
*/
db.Initialized();
if (!db.getInitialized()){
db.setInitialized();
Intent intent = new Intent(MainActivity.this,FirstConnection.class) ;
startActivityForResult(intent, REQUEST_CODE_INITILIZATION);
}
else{
/**
* Get the name of the existing lists
*/
listExisting = db.getTitleSQliteHelper();
/**
* Create an ArrayAdapter for the list's names
*/
ArrayAdapterListNames listExistingAdapter = new ArrayAdapterListNames(this,listExisting) ;
/**
* Ecoute des évènements sur votre liste
*/
listExistingAdapter.addListener(this);
/**
* 1) Implement the ListView containing the list of TextView
* 2) registerForContextMenu => to display a pop-up menu after a long click on a the
* content of the ListView (TextView)
*/
ListView listNames = (ListView)findViewById(R.id.ListViewMain);
registerForContextMenu(listNames);
/**
* Initialisation de la liste avec les données
*/
listNames.setAdapter(listExistingAdapter);
/**
* Bouton pour ouverture nouvelle liste
*/
final Button buttonsuiv = (Button) findViewById(R.id.btnnewliste);
buttonsuiv.setOnClickListener(new View.OnClickListener() {
/**
* Dialog window to ask if the user wants to create a new list
*/
@Override
public void onClick(View v) {
AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this);
// Instantiate the xml file
mInflater = (LayoutInflater) MainActivity.this.getSystemService(MainActivity.this.LAYOUT_INFLATER_SERVICE);
LinearLayout layout = (LinearLayout) mInflater.inflate( R.layout.dialogbox_main_activity , null) ;
input = (EditText)layout.findViewById(R.id.titleSet);
checkPartage = (CheckBox)layout.findViewById(R.id.partage);
checkLocal = (CheckBox)layout.findViewById(R.id.local);
alert.setTitle("Création d'une nouvelle liste");
alert.setMessage("Tapez le nom de la nouvelle liste:");
// Set an EditText view to get user input
final EditText input = new EditText(MainActivity.this);
alert.setView(layout);
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
String value = input.getText().toString() ;
// Do something with value!
if ( checkPartage.isChecked() ){
Intent intent = new Intent(MainActivity.this, ListingArticlesDropb.class);
intent.putExtra("Title",value);
startActivity(intent);
}
else if ( checkLocal.isChecked() ){
Intent intent = new Intent(MainActivity.this, ListingArticles.class);
intent.putExtra("Title",value);
startActivity(intent);
}
}
});
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.cancel();
}
});
alert.show();
}
});
}
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE_INITILIZATION) {
if (resultCode == RESULT_CANCELED) {
int i2 = 1 ;
// applicationWithSharedData();
}
else if (resultCode == Activity.RESULT_OK) {
int i1 = 1 ;
// applicationNoSharedData();
}
}
else
super.onActivityResult(requestCode, resultCode, data);
}
/**
* Creation of a contextual menu
*/
public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main, menu);
menu.setHeaderTitle("Désirez-vous supprimer la liste?");
// menu.add(0, v.getId(), 0, "Action 1");
// menu.add(0, v.getId(), 0, "Action 2");
}
/**
* Action activated when a menu's item is selected
*/
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
switch (item.getItemId()) {
case R.id.yes_delete:
/**
* Delete the list from the database
*/
db.deleteListArticle(listExisting.get(info.position).id);
Log.d("onContextItemSelected => Numéro de l'ID:",String.valueOf(info.targetView.getId()) );
/**
* Delete the title list from the screen
*/
Log.d("onContextItemSelected","Le switch fonctionne!");
listExisting.remove(info.position);
ArrayAdapterListNames listExistingAdapter = new ArrayAdapterListNames(this,listExisting) ;
listExistingAdapter.addListener(this);
ListView listNames = (ListView)findViewById(R.id.ListViewMain);
registerForContextMenu(listNames);
listNames.setAdapter(listExistingAdapter);
return true;
case R.id.no_delete:
return true;
default:
return super.onContextItemSelected(item);
}
}
public void onRestart(){
super.onRestart();
/**
* Get the name of the existing lists
*/
listExisting = db.getTitleSQliteHelper();
/**
* Create an ArrayAdapter for the list's names
*/
ArrayAdapterListNames listExistingAdapter = new ArrayAdapterListNames(this,listExisting) ;
/**
* Ecoute des évènements sur votre liste
*/
listExistingAdapter.addListener(this);
/**
* Récupération du composant ListView
*/
ListView listNames = (ListView)findViewById(R.id.ListViewMain);
/**
* Initialisation de la liste avec les données
*/
listNames.setAdapter(listExistingAdapter);
}
@Override
public void onClickNom(TitleList item, int position) {
if (item.TYPE_CONNECTION.equalsIgnoreCase("local")){
Intent intent = new Intent(MainActivity.this, ListingArticles.class);
intent.putExtra("Title",item.nom);
startActivity(intent);
}
else if (item.TYPE_CONNECTION.equalsIgnoreCase("dropbox")){
Intent intent = new Intent(MainActivity.this, ListingArticlesDropb.class);
intent.putExtra("Title",item.nom);
startActivity(intent);
}
}
}
FirstConnection
public class FirstConnection extends Activity {
final private String APP_KEY = **APP_KEY** ;
final private String APP_SECRET = **APP_SECRET** ;
static final int REQUEST_LINK_TO_DBX = 0; // This value is up to you
private DbxAccountManager mAccountManager ;
private DbxDatastoreManager mDatastoreManager;
private DbxAccount account ;
private SQliteHelper db ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first_connection);
Button btn = (Button)findViewById(R.id.button_first_connection) ;
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// Set up the account manager
mAccountManager = DbxAccountManager.getInstance(getApplicationContext(), APP_KEY, APP_SECRET);
// Set up the datastore manager
if (mAccountManager.hasLinkedAccount()) {
try {
// Use Dropbox datastores
mDatastoreManager = DbxDatastoreManager.forAccount(mAccountManager.getLinkedAccount());
gatherData();
} catch (DbxException.Unauthorized e) {
System.out.println("Account was unlinked remotely");
}
}
if (mDatastoreManager == null) {
// Account isn't linked yet, use local datastores
mDatastoreManager = DbxDatastoreManager.localManager(mAccountManager);
AlertDialog.Builder alert = new AlertDialog.Builder(FirstConnection.this);
alert.setTitle("Connection à Dropbox");
alert.setMessage("L'initialisation de l'application sert à vous synchroniser avec l'espace de données partagées.\r\n"
+ "Souhaitez-vous synchroniser votre application?");
alert.setPositiveButton("Oui", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
mAccountManager.startLink((Activity)FirstConnection.this, REQUEST_LINK_TO_DBX);
}
});
alert.setNegativeButton("Non", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
Intent returnIntent = new Intent();
setResult(RESULT_CANCELED, returnIntent);
finish();
}
});
alert.show();
}
}
});
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_LINK_TO_DBX) {
if (resultCode == Activity.RESULT_OK) {
account = mAccountManager.getLinkedAccount();
Toast.makeText(this, "onActivityResult", Toast.LENGTH_LONG).show();
try {
// Migrate any local datastores to the linked account
mDatastoreManager.migrateToAccount(account);
// Now use Dropbox datastores
mDatastoreManager = DbxDatastoreManager.forAccount(account);
gatherData();
} catch (DbxException e) {
e.printStackTrace();
}
} else {
// Link failed or was cancelled by the user
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
private void gatherData(){
db = new SQliteHelper( this ) ;
Set<DbxDatastoreInfo> datastorePresent = null ;
try {
datastorePresent = mDatastoreManager.listDatastores();
} catch (DbxException e1) {
e1.printStackTrace();
}
Iterator<DbxDatastoreInfo> datastoreLoop = datastorePresent.iterator() ;
while (datastoreLoop.hasNext()){
TitleList tit = new TitleList(datastoreLoop.next().id) ;
tit.setConnectDropbox();
db.addLists(tit);
}
mDatastoreManager.shutDown();
Intent returnIntent = new Intent();
boolean syncOK = true ;
returnIntent.putExtra("result", syncOK) ;
setResult(RESULT_CANCELED, returnIntent);
finish();
// startActivity(returnIntent);
}
}
答案 0 :(得分：0)
在 MainActivity
上添加此方法@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case REQUSET_CODE_YOUR:
if (resultCode == RESULT_OK) {
// write here code via **RESULT_OK**
}
break;
default: // none of these
break;
}
}
然后在FirstConnection屏幕之后作为par写入代码，无论你需要什么方法。
setResult(RESULT_OK); // important
答案 1 :(得分：0)
用于FirstConnection类，在上面的FirstConnection代码中我找到了你在哪里使用它，如果你已经使用过它就完全正确了。如果条件为真，它是合乎逻辑的继续，唯一的错误可能发生在＆＃34;如果＆＃34;如果您使用了＆＃34; =＆＃34;而不是＆＃34; ==＆＃34; ，而是指定条件检查。