Java onActivityResult未被覆盖，且从未在按钮中到达。单击侦听器
我会开始说，我只是希望这不是一件愚蠢到我无法注意到的事情，但是经过几个小时的研究，我还没有找到我的答案。在我的Java onActivityResult未被覆盖，且从未在按钮中到达。单击侦听器,java,android,android-contacts,onactivityresult,Java,Android,Android Contacts,Onactivityresult,我会开始说，我只是希望这不是一件愚蠢到我无法注意到的事情，但是经过几个小时的研究，我还没有找到我的答案。在我的SMSActivity中，我创建了一个按钮cmdApriRubrica，该按钮打开联系人默认应用程序，然后在选择联系人时，从理论上将其数据返回到我的活动中（我已经查阅了）。“联系人”应用程序可以正常打开，但问题是我从未得到结果。我的代码如下： ((Button)findViewById(R.id.cmdApriRubrica)).setOnClickListener( new Butto
SMSActivity按钮cmdApriRubrica((Button)findViewById(R.id.cmdApriRubrica)).setOnClickListener( new Button.OnClickListener() {
@Override
public void onClick(View v) {
Intent pickContactIntent = new Intent(Intent.ACTION_PICK, Uri.parse("content://contacts"));
pickContactIntent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE); // Show user only contacts w/ phone numbers
startActivityForResult(pickContactIntent, 200);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//super.onActivityResult(int requestCode, int resultCode, Intent data); CAN'T CALL THIS
// Check which request it is that we're responding to
if (requestCode == 200 && resultCode == RESULT_OK) {
// Make sure the request was successful
// Get the URI that points to the selected contact
Uri contactUri = data.getData();
// We only need the NUMBER column, because there will be only one row in the result
String[] projection = {ContactsContract.CommonDataKinds.Phone.NUMBER};
// Perform the query on the contact to get the NUMBER column
// We don't need a selection or sort order (there's only one result for the given URI)
// CAUTION: The query() method should be called from a separate thread to avoid blocking
// your app's UI thread. (For simplicity of the sample, this code doesn't do that.)
// Consider using CursorLoader to perform the query.
Cursor cursor = getContentResolver()
.query(contactUri, projection, null, null, null);
cursor.moveToFirst();
// Retrieve the phone number from the NUMBER column
int column = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String nome = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
String numero = cursor.getString(column);
Log.i("Dati contatto: ","Nome = "+nome+", numero = "+numero);
// Do something with the phone number...
txtDati.setText(new StringBuilder().append(nome).append("\t------------\t").append(numero).toString()); //Android Studio suggested me doing this...
}
}
});
TextView txtDati = null; //This is initialized just below the class declaration to have it visible
public static final int PICK_CONTACT_REQ_CODE = 200;
...
findViewById(R.id.cmdApriRubrica).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent pickContactIntent = new Intent(Intent.ACTION_PICK, Uri.parse("content://contacts"));
pickContactIntent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE); // Show user only contacts w/ phone numbers
startActivityForResult(pickContactIntent, PICK_CONTACT_REQ_CODE);
}
});
...
//At the same level of the onCreate() method, as I've been told!
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// Check which request it is that we're responding to
if (requestCode == 200 && resultCode == RESULT_OK && txtDati != null) {
// Make sure the request was successful
// Get the URI that points to the selected contact
Uri contactUri = data.getData();
// We only need the NUMBER column, because there will be only one row in the result
String[] projection = {ContactsContract.CommonDataKinds.Phone.NUMBER};
// Perform the query on the contact to get the NUMBER column
// We don't need a selection or sort order (there's only one result for the given URI)
// CAUTION: The query() method should be called from a separate thread to avoid blocking
// your app's UI thread. (For simplicity of the sample, this code doesn't do that.)
// Consider using CursorLoader to perform the query.
Cursor cursor = getContentResolver()
.query(contactUri, projection, null, null, null);
cursor.moveToFirst();
// Retrieve the phone number from the NUMBER column
int column = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String nome = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
String numero = cursor.getString(column);
Log.i("Dati contatto: ","Nome = "+nome+", numero = "+numero);
// Do something with the phone number...
txtDati.setText(new StringBuilder().append(nome).append("\t------------\t").append(numero).toString()); //Android Studio suggested me doing this...
}
else
Log.i("Problem ActivityResult","Something wrong in onActivityResult method!");
}
onClick（）super.onActivityResultonClick编辑：我已经按照建议修改了代码；我的代码如下：
((Button)findViewById(R.id.cmdApriRubrica)).setOnClickListener( new Button.OnClickListener() {
@Override
public void onClick(View v) {
Intent pickContactIntent = new Intent(Intent.ACTION_PICK, Uri.parse("content://contacts"));
pickContactIntent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE); // Show user only contacts w/ phone numbers
startActivityForResult(pickContactIntent, 200);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//super.onActivityResult(int requestCode, int resultCode, Intent data); CAN'T CALL THIS
// Check which request it is that we're responding to
if (requestCode == 200 && resultCode == RESULT_OK) {
// Make sure the request was successful
// Get the URI that points to the selected contact
Uri contactUri = data.getData();
// We only need the NUMBER column, because there will be only one row in the result
String[] projection = {ContactsContract.CommonDataKinds.Phone.NUMBER};
// Perform the query on the contact to get the NUMBER column
// We don't need a selection or sort order (there's only one result for the given URI)
// CAUTION: The query() method should be called from a separate thread to avoid blocking
// your app's UI thread. (For simplicity of the sample, this code doesn't do that.)
// Consider using CursorLoader to perform the query.
Cursor cursor = getContentResolver()
.query(contactUri, projection, null, null, null);
cursor.moveToFirst();
// Retrieve the phone number from the NUMBER column
int column = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String nome = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
String numero = cursor.getString(column);
Log.i("Dati contatto: ","Nome = "+nome+", numero = "+numero);
// Do something with the phone number...
txtDati.setText(new StringBuilder().append(nome).append("\t------------\t").append(numero).toString()); //Android Studio suggested me doing this...
}
}
});
TextView txtDati = null; //This is initialized just below the class declaration to have it visible
public static final int PICK_CONTACT_REQ_CODE = 200;
...
findViewById(R.id.cmdApriRubrica).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent pickContactIntent = new Intent(Intent.ACTION_PICK, Uri.parse("content://contacts"));
pickContactIntent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE); // Show user only contacts w/ phone numbers
startActivityForResult(pickContactIntent, PICK_CONTACT_REQ_CODE);
}
});
...
//At the same level of the onCreate() method, as I've been told!
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// Check which request it is that we're responding to
if (requestCode == 200 && resultCode == RESULT_OK && txtDati != null) {
// Make sure the request was successful
// Get the URI that points to the selected contact
Uri contactUri = data.getData();
// We only need the NUMBER column, because there will be only one row in the result
String[] projection = {ContactsContract.CommonDataKinds.Phone.NUMBER};
// Perform the query on the contact to get the NUMBER column
// We don't need a selection or sort order (there's only one result for the given URI)
// CAUTION: The query() method should be called from a separate thread to avoid blocking
// your app's UI thread. (For simplicity of the sample, this code doesn't do that.)
// Consider using CursorLoader to perform the query.
Cursor cursor = getContentResolver()
.query(contactUri, projection, null, null, null);
cursor.moveToFirst();
// Retrieve the phone number from the NUMBER column
int column = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String nome = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
String numero = cursor.getString(column);
Log.i("Dati contatto: ","Nome = "+nome+", numero = "+numero);
// Do something with the phone number...
txtDati.setText(new StringBuilder().append(nome).append("\t------------\t").append(numero).toString()); //Android Studio suggested me doing this...
}
else
Log.i("Problem ActivityResult","Something wrong in onActivityResult method!");
}
java.lang.RuntimeException:未能传递结果ResultInfo{who=null，request=200，result=-1，data=Intent{dat=content://com.android.contacts/data/3045 flg=0x1}}到活动{com.fun.is.activity.gguiduzzi.orariobello/com.fun.is.activity.gguiduzzi.orariobello.SMSActivity}:java.lang.IllegalStateException:无法读取第0行，光标窗口中的列-1。在从光标访问数据之前，请确保光标已正确初始化。
谁能告诉我哪里出了问题？我一直在努力寻找它。谢谢大家! 在我看来，这里有两个问题。您正在使用OnClickListener from按钮的方法。您应该使用视图
((Button)findViewById(R.id.cmdApriRubrica)).setOnClickListener( new Button.OnClickListener() { WRONG
((Button)findViewById(R.id.cmdApriRubrica)).setOnClickListener( new View.OnClickListener() { OK
您应该将此代码（onActivityResult）置于onCreate、onDestroy等的同一级别。因此我应该在外部重写它，谢谢！你能解释一下使用Button.OnClickListener查看时有什么变化吗？@njzk2可能是错误的，这里的词不正确，是我的错，我应该使用“可能的变化”之类的词。他在寻找解决问题的办法，我回答了我认为他可以改变什么来解决这个问题。在API（）和我参与的大多数项目中，使用Button.OnClickListener，这就是我建议使用Button.OnClickListener的原因。