在按AutoCompleteTextView上的软键盘上的下一个按钮（无论是否输入数据）时，我试图将焦点更改为下一个EditText并保持软键盘。焦点改变，但软键盘消失。我试图使用InputMethodManager无效。我所做的事情有根本上不正确的地方吗？
public class AuthorizeLoadActivity extends AppCompatActivity {
TextView operatorNameValue;
ImageButton cameraButton;
TextView ticketNumberValue;
TextView saleNameValue;
Spinner haulerSpinner;
Spinner saleProductSpinner;
Spinner destinationSpinner;
AutoCompleteTextView driverAutoCompleteTextView;
EditText trailerEditText;
Spinner trailerDropSpinner;
Button cancelButton;
Button saveAuthorizationButton;
Button addACommentButton;
String barcodeValue;
ArrayList<SaleObject> savedArrayList;
SaleObject currentSaleObject;
ArrayList<String> haulerNameArrayList = new ArrayList<>();
ArrayList<String> saleProductNameArrayList = new ArrayList<>();
ArrayList<Integer> haulerIDArrayList = new ArrayList<>();
ArrayList<Integer> saleProductIDArrayList = new ArrayList<>();
ArrayList<String> destinationArrayList = new ArrayList<>();
ArrayList<AuthorizationObject> authorizationArrayList = new ArrayList<>();
ArrayList<String> driverArrayList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_authorizeload);
//link instance of menu_main
Toolbar mainToolbar = findViewById(R.id.toolbar);
setSupportActionBar(mainToolbar);
//Enable Up Button to return you to home page
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(true);
}
barcodeValue = getIntent().getStringExtra("barcodeValue");
//Link UI to XML
operatorNameValue = findViewById(R.id.operatorNameValue);
cameraButton = findViewById(R.id.cameraButton);
ticketNumberValue = findViewById(R.id.ticketNumberValue);
saleNameValue = findViewById(R.id.saleNameSpinner);
haulerSpinner = findViewById(R.id.ticketNumberTextView);
saleProductSpinner = findViewById(R.id.saleProductSpinner);
destinationSpinner = findViewById(R.id.buyerSpinner);
driverAutoCompleteTextView = findViewById(R.id.driverAutoComplete);
trailerEditText = findViewById(R.id.trailerNumberEditText);
trailerDropSpinner = findViewById(R.id.trailerDropSpinner);
cancelButton = findViewById(R.id.cancelButton);
saveAuthorizationButton = findViewById(R.id.saveLoadButton);
addACommentButton = findViewById(R.id.addACommentButton);
//set Security Number Value to barcode information previously collected
ticketNumberValue.setText(barcodeValue);
//Reduce EditText/AutoCompleteTextView text sizes if using phone rather than tablet
boolean tabletSize = getResources().getBoolean(R.bool.isTablet);
if (!tabletSize) {
driverAutoCompleteTextView.setTextSize(10);
trailerEditText.setTextSize(10);
}
//Check files for existent drivers and pull them back into an ArrayList
//Check internal storage for driver data
try {
//Set target file to drivers.txt
File targetFile = new File(getFilesDir(), "drivers.txt");
//Create new file input stream
FileInputStream fis = new FileInputStream(targetFile);
//Create new object input stream, using fis
ObjectInputStream ois = new ObjectInputStream(fis);
//write object input stream to object
//noinspection unchecked
driverArrayList = (ArrayList<String>) ois.readObject();
//close object output stream
ois.close();
//close file output stream
fis.close();
} catch (ClassNotFoundException | IOException e) {
e.printStackTrace();
}
//Setup autoCompleteTextView list with drivers
ArrayAdapter<String> driverAdapter = new ArrayAdapter<>(this, android.R.layout.simple_dropdown_item_1line, driverArrayList);
driverAutoCompleteTextView.setAdapter(driverAdapter);
//show AutoComplete information without having to type first.
driverAutoCompleteTextView.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View view, boolean hasFocus) {
if (hasFocus) {
driverAutoCompleteTextView.showDropDown();
} else {
driverAutoCompleteTextView.dismissDropDown();
}
}
});
//move to next editText when soft keyboard next button is pressed.
driverAutoCompleteTextView.setOnKeyListener(new View.OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
// If the event is a key-down event on the "enter" button
if ((event.getAction() == KeyEvent.ACTION_DOWN) &&
(keyCode == KeyEvent.KEYCODE_ENTER)) {
// remove focus from driverAutoCompleteTextView
driverAutoCompleteTextView.clearFocus();
// give focus to trailerEditText
trailerEditText.setFocusableInTouchMode(true);
trailerEditText.requestFocus();
showKeyboard(trailerEditText);
return true;
}
return false;
}
});
//Initiate the barcode reader to replace security number value field
cameraButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
cancelButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
saveAuthorizationButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (haulerSpinner.getSelectedItemPosition() != 0 && saleProductSpinner.getSelectedItemPosition() != 0 && destinationSpinner.getSelectedItemPosition() != 0 && !driverAutoCompleteTextView.getText().toString().equals("") && !trailerEditText.getText().toString().equals("")) {
//Get all of the pertinent data
String currentOperatorID = currentSaleObject.getlbOperatorID();
String currentSaleName = currentSaleObject.getTimberSaleName();
Integer currentTimberSaleID = currentSaleObject.getTimberSaleID();
Integer currentProductID = saleProductIDArrayList.get(saleProductSpinner.getSelectedItemPosition());
String currentProductName = saleProductNameArrayList.get(saleProductSpinner.getSelectedItemPosition());
Integer currentHaulerID = haulerIDArrayList.get(haulerSpinner.getSelectedItemPosition());
String currentHaulerName = haulerNameArrayList.get(haulerSpinner.getSelectedItemPosition());
String currentDestination = destinationArrayList.get(destinationSpinner.getSelectedItemPosition());
String currentDriver = driverAutoCompleteTextView.getText().toString();
String currentTrailerNumber = trailerEditText.getText().toString();
Boolean currentTrailerDrop = trailerDropSpinner.getSelectedItemPosition() != 0;
//If new driver, add driver name to drivers.text
Boolean driverAlreadyExists = false;
for (int i = 0; i < driverArrayList.size(); i++) {
if (driverArrayList.get(i).equals(currentDriver)) {
driverAlreadyExists = true;
}
}
if (!driverAlreadyExists) {
//add new driver to driverArrayList
driverArrayList.add(currentDriver);
//write driver list back to drivers.txt
try {
//Set target file to drivers.txt
File targetFile = new File(getFilesDir(), "drivers.txt");
//Create new file output stream
FileOutputStream fos = new FileOutputStream(targetFile);
//Create new object output stream, using fos
ObjectOutputStream oos = new ObjectOutputStream(fos);
//write object to object output stream
oos.writeObject(driverArrayList);
//close object output stream
oos.close();
//close file output stream
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
//Get GPS values
LocationManager mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
double[] gpsValues = getLastBestLocation(mLocationManager);
//if GPS data exists...
if (gpsValues != null) {
double currentLatitude = gpsValues[0];
double currentLongitude = gpsValues[1];
//Create an authorization object with the data
AuthorizationObject currentAuthorization = new AuthorizationObject(currentOperatorID, currentTimberSaleID, currentSaleName, currentProductID, currentProductName, currentHaulerID, currentHaulerName, ticketNumberValue.getText().toString(), currentDestination, currentDriver, currentTrailerNumber, currentTrailerDrop, currentLatitude, currentLongitude);
//Check files for existent authorizations and pull them back as AuthorizationObjects
//Check internal storage for authorization data
try {
//Set target file to authorizations.txt
File targetFile = new File(getFilesDir(), "authorizations.txt");
//Create new file input stream
FileInputStream fis = new FileInputStream(targetFile);
//Create new object input stream, using fis
ObjectInputStream ois = new ObjectInputStream(fis);
//write object input stream to object
//noinspection unchecked
authorizationArrayList = (ArrayList<AuthorizationObject>) ois.readObject();
//close object output stream
ois.close();
//close file output stream
fis.close();
} catch (ClassNotFoundException | IOException e) {
e.printStackTrace();
}
//add authorization to authorizationArrayList
authorizationArrayList.add(currentAuthorization);
//write authorization list back to authorizations.txt
try {
//Set target file to authorizations.txt
File targetFile = new File(getFilesDir(), "authorizations.txt");
//Create new file output stream
FileOutputStream fos = new FileOutputStream(targetFile);
//Create new object output stream, using fos
ObjectOutputStream oos = new ObjectOutputStream(fos);
//write object to object output stream
oos.writeObject(authorizationArrayList);
//close object output stream
oos.close();
//close file output stream
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
Intent authorizeLoadToMainIntent = new Intent(AuthorizeLoadActivity.this, MainActivity.class);
authorizeLoadToMainIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(authorizeLoadToMainIntent);
} else {
//TODO: Build better GPS permissions thing.
Toast.makeText(AuthorizeLoadActivity.this, "Must allow location permissions", Toast.LENGTH_SHORT).show();
}
} else {
//TODO: Build more robust error-handling than just a toast.
Toast.makeText(AuthorizeLoadActivity.this, "Fill out all fields", Toast.LENGTH_SHORT).show();
}
}
});
addACommentButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
//Check internal storage for sale data
try {
//Set target file to sales.txt
File targetFile = new File(getFilesDir(), "sales.txt");
//Create new file input stream
FileInputStream fis = new FileInputStream(targetFile);
//Create new object input stream, using fis
ObjectInputStream ois = new ObjectInputStream(fis);
//write object input stream to object
//noinspection unchecked
savedArrayList = (ArrayList<SaleObject>) ois.readObject();
//close object output stream
ois.close();
//close file output stream
fis.close();
} catch (ClassNotFoundException | IOException e) {
e.printStackTrace();
}
//Start off with non-values in the spinners so I can ensure that users actually interacted with them
haulerNameArrayList.add("");
saleProductNameArrayList.add("");
haulerIDArrayList.add(0);
saleProductIDArrayList.add(0);
destinationArrayList.add("");
//Get range values to check against entered (or scanned) string
for (int i = 0; i < savedArrayList.size(); i++) {
ArrayList<RangeObject> currentSaleObjectRanges = savedArrayList.get(i).getRanges();
for (int j = 0; j < currentSaleObjectRanges.size(); j++) {
RangeObject currentRange = currentSaleObjectRanges.get(j);
Integer startValue = currentRange.getStart();
Integer endValue = currentRange.getEnd();
//Check if editText string is an Integer
try {
Integer editTextInteger = Integer.parseInt(barcodeValue);
//If it is:
//If editTextInteger falls between the two of the range:
if (editTextInteger >= startValue && editTextInteger <= endValue) {
currentSaleObject = savedArrayList.get(i);
//Set UI elements to correspond with current sale info.
operatorNameValue.setText(currentSaleObject.getLbOperatorName());
saleNameValue.setText(currentSaleObject.getTimberSaleName());
//Create ArrayList for contract objects and get all of their information.
//Essentially iterates through all contracts of currentSaleObject and creates an arrayList of contracts.
//This (single next line) was auto-generated by Android Studio. Was a for loop.
ArrayList<ContractObject> contractArrayList = new ArrayList<>(currentSaleObject.getContract());
//iterate through contractArrayList and get the values for the different fields
for (int k = 0; k < contractArrayList.size(); k++) {
ContractObject currentContract = contractArrayList.get(k);
haulerNameArrayList.add(currentContract.getHaulerName());
saleProductNameArrayList.add(currentContract.getSaleProductName());
haulerIDArrayList.add(currentContract.getHaulerID());
saleProductIDArrayList.add(currentContract.getSaleProductID());
destinationArrayList.add(currentContract.getDestinationName());
}
//remove duplicates in each arrayList for spinners
HashSet<String> haulerNameHashSet = new HashSet<>(haulerNameArrayList);
haulerNameArrayList.clear();
haulerNameArrayList.addAll(haulerNameHashSet);
HashSet<Integer> haulerIDHashSet = new HashSet<>(haulerIDArrayList);
haulerIDArrayList.clear();
haulerIDArrayList.addAll(haulerIDHashSet);
HashSet<String> productNameHashSet = new HashSet<>(saleProductNameArrayList);
saleProductNameArrayList.clear();
saleProductNameArrayList.addAll(productNameHashSet);
HashSet<Integer> productIDHashSet = new HashSet<>(saleProductIDArrayList);
saleProductIDArrayList.clear();
saleProductIDArrayList.addAll(productIDHashSet);
HashSet<String> destinationHashSet = new HashSet<>(destinationArrayList);
destinationArrayList.clear();
destinationArrayList.addAll(destinationHashSet);
//Set spinner values
//set simple adapters for spinners
ArrayAdapter<String> haulerSpinnerAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item, haulerNameArrayList);
haulerSpinner.setAdapter(haulerSpinnerAdapter);
ArrayAdapter<String> saleProductSpinnerAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item, saleProductNameArrayList);
saleProductSpinner.setAdapter(saleProductSpinnerAdapter);
ArrayAdapter<String> destinationSpinnerAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item, destinationArrayList);
destinationSpinner.setAdapter(destinationSpinnerAdapter);
//autofill spinner value if only one value is left after removing duplicates.
if (haulerNameArrayList.size() == 2) {
haulerSpinner.setSelection(1);
}
if (saleProductNameArrayList.size() == 2) {
saleProductSpinner.setSelection(1);
}
if (destinationArrayList.size() == 2) {
destinationSpinner.setSelection(1);
}
}
} catch (NumberFormatException e) {
e.printStackTrace();
}
}
}
}
private void showKeyboard(View view) {
InputMethodManager manager = (InputMethodManager) this.getSystemService(Activity.INPUT_METHOD_SERVICE);
manager.showSoftInput(view, 0);
}
//add action items to toolbar
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
//add action item functionality
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_filter:
// User chose the filter item, do stuff...
return true;
case R.id.action_first:
// User chose the first item, do stuff...
return true;
case R.id.action_second:
// User chose the second item, do stuff...
return true;
case R.id.action_third:
// User chose the third item, do stuff...
return true;
default:
// If we got here, the user's action was not recognized.
// Invoke the superclass to handle it.
return super.onOptionsItemSelected(item);
}
}
//Used to bring over scan information from the barcode reader
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
IntentResult scanningResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
if (scanningResult != null) {
//set scanned data to security number value
barcodeValue = scanningResult.getContents();
ticketNumberValue.setText(barcodeValue);
} else {
Toast toast = Toast.makeText(getApplicationContext(),
"No scan data received!", Toast.LENGTH_SHORT);
toast.show();
}
}
private double[] getLastBestLocation(LocationManager mLocationManager) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling this to handle no GPS permissions
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
Toast.makeText(this, "You don't have location permissions enabled", Toast.LENGTH_SHORT).show();
return null;
} else {
Location locationGPS = mLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
Location locationNet = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
long GPSLocationTime = 0;
if (null != locationGPS) {
GPSLocationTime = locationGPS.getTime();
}
long NetLocationTime = 0;
if (null != locationNet) {
NetLocationTime = locationNet.getTime();
}
if (0 < GPSLocationTime - NetLocationTime) {
if (locationGPS != null) {
return new double[]{locationGPS.getLatitude(), locationGPS.getLongitude()};
} else {
return null;
//TODO: Handle nulls, here.
}
} else {
if (locationNet != null) {
return new double[]{locationNet.getLatitude(), locationNet.getLongitude()};
} else {
return null;
//TODO: Handle nulls, here.
}
}
}
}
}
答案 0 :(得分：1)
如果要显示软键盘，请执行此操作
<?php
function takes_two($one, $two)
{
var_dump($one, $two);
}
$args = ['pig', 'man'];
call_user_func_array('takes_two', $args);
这既快速又肮脏，但是应该可以使用。 另外，您应该在onCreate方法或xml中添加trailerEditText.setFocusableInTouchMode（true）。