我看到很多与此相关的问题，但没有一个问题解决了我的问题，所以如果重复，我会道歉。
我正在创建一本联系簿。我创建了一个片段来显示所有联系人。 现在我想要做的是创建一个imageview（调用按钮），以便在单击时调用联系人。
我一直收到错误（没有找到活动来处理Intent {act android.intent.action.CALL}，当我在我的设备上运行时它崩溃了，虽然我已经将清单添加到了清单中。 我做错了什么？
片段类：
public class DetailFragment extends Fragment
implements LoaderManager.LoaderCallbacks<Cursor> {
public interface DetailFragmentListener {
void onContactDeleted();
void onEditContact(Uri contactUri);
}
private static final int CONTACT_LOADER = 0;
private DetailFragmentListener listener; // MainActivity
private Uri contactUri;
private TextView nameTextView;
private TextView phoneTextView;
private TextView emailTextView;
private TextView streetTextView;
private TextView cityTextView;
private TextView stateTextView;
private TextView zipTextView;
private ImageButton callButton; //The image View for the calling
@Override
public void onAttach(Context context) {
super.onAttach(context);
listener = (DetailFragmentListener) context;
}
@Override
public void onDetach() {
super.onDetach();
listener = null;
}
// called when DetailFragmentListener's view needs to be created
@Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
setHasOptionsMenu(true); // this fragment has menu items to display
// get Bundle of arguments then extract the contact's Uri
Bundle arguments = getArguments();
if (arguments != null)
contactUri = arguments.getParcelable(MainActivity.CONTACT_URI);
// inflate DetailFragment's layout
View view =
inflater.inflate(R.layout.fragment_detail, container, false);
// get the EditTexts
nameTextView = (TextView) view.findViewById(R.id.nameTextView);
phoneTextView = (TextView) view.findViewById(R.id.phoneTextView);
emailTextView = (TextView) view.findViewById(R.id.emailTextView);
streetTextView = (TextView) view.findViewById(R.id.streetTextView);
cityTextView = (TextView) view.findViewById(R.id.cityTextView);
stateTextView = (TextView) view.findViewById(R.id.stateTextView);
zipTextView = (TextView) view.findViewById(R.id.zipTextView);
callButton = (ImageButton) view.findViewById(R.id.callButton);/Get the image view
// load the contact
getLoaderManager().initLoader(CONTACT_LOADER, null, this);
addListenerOnButton(view);//Call the Listener
return view;
}
// display this fragment's menu items
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.fragment_details_menu, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_edit:
listener.onEditContact(contactUri);
return true;
case R.id.action_delete:
deleteContact();
return true;
}
return super.onOptionsItemSelected(item);
}
private void deleteContact() {
confirmDelete.show(getFragmentManager(), "confirm delete");
}
private final DialogFragment confirmDelete =
new DialogFragment() {
@Override
public Dialog onCreateDialog(Bundle bundle) {
AlertDialog.Builder builder =
new AlertDialog.Builder(getActivity());
builder.setTitle(R.string.confirm_title);
builder.setMessage(R.string.confirm_message);
// provide an OK button that simply dismisses the dialog
builder.setPositiveButton(R.string.button_delete,
new DialogInterface.OnClickListener() {
@Override
public void onClick(
DialogInterface dialog, int button) {
getActivity().getContentResolver().delete(
contactUri, null, null);
listener.onContactDeleted(); // notify listener
}
}
);
builder.setNegativeButton(R.string.button_cancel, null);
return builder.create(); // return the AlertDialog
}
};
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
CursorLoader cursorLoader;
switch (id) {
case CONTACT_LOADER:
cursorLoader = new CursorLoader(getActivity(),
contactUri,
null,
null,
null,
null);
break;
default:
cursorLoader = null;
break;
}
return cursorLoader;
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
if (data != null && data.moveToFirst()) {
// get the column index for each data item
int nameIndex = data.getColumnIndex(Contact.COLUMN_NAME);
int phoneIndex = data.getColumnIndex(Contact.COLUMN_PHONE);
int emailIndex = data.getColumnIndex(Contact.COLUMN_EMAIL);
int streetIndex = data.getColumnIndex(Contact.COLUMN_STREET);
int cityIndex = data.getColumnIndex(Contact.COLUMN_CITY);
int stateIndex = data.getColumnIndex(Contact.COLUMN_STATE);
int zipIndex = data.getColumnIndex(Contact.COLUMN_ZIP);
// fill TextViews with the retrieved data
nameTextView.setText(data.getString(nameIndex));
phoneTextView.setText(data.getString(phoneIndex));
emailTextView.setText(data.getString(emailIndex));
streetTextView.setText(data.getString(streetIndex));
cityTextView.setText(data.getString(cityIndex));
stateTextView.setText(data.getString(stateIndex));
zipTextView.setText(data.getString(zipIndex));
}
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
}
/////Add listener to the image view
public void addListenerOnButton(View v) {
callButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
String phone_number = phoneTextView.getText().toString();//nUHA
Intent callIntent =new Intent(Intent.ACTION_CALL);
callIntent.setData(Uri.parse(phone_number));
startActivity(callIntent);
}
});
}
}
这是on click方法的一部分
@Override
public void onClick(View arg0) {
String phone_number = phoneTextView.getText().toString();//nUHA
Intent callIntent =new Intent(Intent.ACTION_CALL);
callIntent.setData(Uri.parse(phone_number));
startActivity(callIntent);
我的主要
public class MainActivity extends AppCompatActivity
implements ContactsFragment.ContactsFragmentListener,
DetailFragment.DetailFragmentListener,
AddEditFragment.AddEditFragmentListener {
public static final String CONTACT_URI = "contact_uri";
private ContactsFragment contactsFragment; // displays contact list
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
if (savedInstanceState == null &&
findViewById(R.id.fragmentContainer) != null) {
// create ContactsFragment
contactsFragment = new ContactsFragment();
// add the fragment to the FrameLayout
FragmentTransaction transaction =
getSupportFragmentManager().beginTransaction();
transaction.add(R.id.fragmentContainer, contactsFragment);
transaction.commit(); // display ContactsFragment
}
else {
contactsFragment =
(ContactsFragment) getSupportFragmentManager().
findFragmentById(R.id.contactsFragment);
}
}
@Override
public void onContactSelected(Uri contactUri) {
if (findViewById(R.id.fragmentContainer) != null) // phone
displayContact(contactUri, R.id.fragmentContainer);
else { // tablet
getSupportFragmentManager().popBackStack();
displayContact(contactUri, R.id.rightPaneContainer);
}
}
@Override
public void onAddContact() {
if (findViewById(R.id.fragmentContainer) != null) // phone
displayAddEditFragment(R.id.fragmentContainer, null);
else // tablet
displayAddEditFragment(R.id.rightPaneContainer, null);
}
private void displayContact(Uri contactUri, int viewID) {
DetailFragment detailFragment = new DetailFragment();
Bundle arguments = new Bundle();
arguments.putParcelable(CONTACT_URI, contactUri);
detailFragment.setArguments(arguments);
FragmentTransaction transaction =
getSupportFragmentManager().beginTransaction();
transaction.replace(viewID, detailFragment);
transaction.addToBackStack(null);
transaction.commit(); // causes DetailFragment to display
}
private void displayAddEditFragment(int viewID, Uri contactUri) {
AddEditFragment addEditFragment = new AddEditFragment();
if (contactUri != null) {
Bundle arguments = new Bundle();
arguments.putParcelable(CONTACT_URI, contactUri);
addEditFragment.setArguments(arguments);
}
FragmentTransaction transaction =
getSupportFragmentManager().beginTransaction();
transaction.replace(viewID, addEditFragment);
transaction.addToBackStack(null);
transaction.commit(); // causes AddEditFragment to display
}
@Override
public void onContactDeleted() {
// removes top of back stack
getSupportFragmentManager().popBackStack();
contactsFragment.updateContactList(); // refresh contacts
}
// display the AddEditFragment to edit an existing contact
@Override
public void onEditContact(Uri contactUri) {
if (findViewById(R.id.fragmentContainer) != null) // phone
displayAddEditFragment(R.id.fragmentContainer, contactUri);
else // tablet
displayAddEditFragment(R.id.rightPaneContainer, contactUri);
}
// update GUI after new contact or updated contact saved
@Override
public void onAddEditCompleted(Uri contactUri) {
// removes top of back stack
getSupportFragmentManager().popBackStack();
contactsFragment.updateContactList(); // refresh contacts
if (findViewById(R.id.fragmentContainer) == null) { // tablet
// removes top of back stack
getSupportFragmentManager().popBackStack();
// on tablet, display contact that was just added or edited
displayContact(contactUri, R.id.rightPaneContainer);
}
}
}
我的清单
<uses-permission android:name="android.permission.CALL_PHONE"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.CALL"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
<provider
android:name=".data.AddressBookContentProvider"
android:authorities="com.deitel.addressbook.data"
android:enabled="true"
android:exported="false" >
</provider>
</application>
</manifest>
答案 0 :(得分：3)
使用
Uri.parse("tel:" + phone_number)
而不是
Uri.parse(phone_number)