我在对话框上有一个edittextbox。当我单击编辑文本框时，必须禁用键盘。
在这里，我有以下代码，其中编辑 tetxtbox 存在。
公共类 NumberPicker 扩展 LinearLayout 实现 OnClickListener、OnFocusChangeListener、OnLongClickListener {
private static final String TAG = "NumberPicker";
private static final int DEFAULT_MAX = 10;
private static final int DEFAULT_MIN = 1;
public static String quantityForOrder;
public interface OnChangedListener {
void onChanged(NumberPicker picker, int oldVal, int newVal);
}
public interface Formatter {
String toString(int value);
}
/*
* Use a custom NumberPicker formatting callback to use two-digit
* minutes strings like "01". Keeping a static formatter etc. is the
* most efficient way to do this; it avoids creating temporary objects
* on every call to format().
*/
public static final NumberPicker.Formatter TWO_DIGIT_FORMATTER =
new NumberPicker.Formatter() {
final StringBuilder mBuilder = new StringBuilder();
final java.util.Formatter mFmt = new java.util.Formatter(mBuilder);
final Object[] mArgs = new Object[1];
public String toString(int value) {
mArgs[0] = value;
mBuilder.delete(0, mBuilder.length());
mFmt.format("%02d", mArgs);
return mFmt.toString();
}
};
private final Handler mHandler;
private final Runnable mRunnable = new Runnable() {
public void run() {
if (mIncrement) {
changeCurrent(mCurrent + 1);
mHandler.postDelayed(this, mSpeed);
} else if (mDecrement) {
changeCurrent(mCurrent - 1);
mHandler.postDelayed(this, mSpeed);
}
}
};
private final EditText mText;
private final InputFilter mNumberInputFilter;
private String[] mDisplayedValues;
protected int mStart;
protected int mEnd;
protected int mCurrent;
protected int mPrevious;
private OnChangedListener mListener;
private Formatter mFormatter;
private long mSpeed = 300;
private boolean mIncrement;
private boolean mDecrement;
public NumberPicker(Context context) {
this(context, null);
}
public NumberPicker(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
@SuppressWarnings({"UnusedDeclaration"})
public NumberPicker(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs);
setOrientation(VERTICAL);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.number_picker, this, true);
mHandler = new Handler();
InputFilter inputFilter = new NumberPickerInputFilter();
mNumberInputFilter = new NumberRangeKeyListener();
mIncrementButton = (NumberPickerButton) findViewById(R.id.increment);
mIncrementButton.setOnClickListener(this);
mIncrementButton.setOnLongClickListener(this);
mIncrementButton.setNumberPicker(this);
mDecrementButton = (NumberPickerButton) findViewById(R.id.decrement);
mDecrementButton.setOnClickListener(this);
mDecrementButton.setOnLongClickListener(this);
mDecrementButton.setNumberPicker(this);
mText = (EditText) findViewById(R.id.timepicker_input);
mText.setOnFocusChangeListener(this);
mText.setFilters(new InputFilter[] {inputFilter});
mText.setRawInputType(InputType.TYPE_CLASS_NUMBER);
if (!isEnabled()) {
setEnabled(false);
}
mStart = DEFAULT_MIN;
mEnd = DEFAULT_MAX;
// mText.setText(mStart); }
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
mIncrementButton.setEnabled(enabled);
mDecrementButton.setEnabled(enabled);
mText.setEnabled(enabled);
}
public void setOnChangeListener(OnChangedListener listener) {
mListener = listener;
}
public void setFormatter(Formatter formatter) {
mFormatter = formatter;
}
/**
* Set the range of numbers allowed for the number picker. The current
* value will be automatically set to the start.
*
* @param start the start of the range (inclusive)
* @param end the end of the range (inclusive)
*/
public void setRange(int start, int end) {
mStart = start;
mEnd = end;
mCurrent = start;
updateView();
}
/**
* Set the range of numbers allowed for the number picker. The current
* value will be automatically set to the start. Also provide a mapping
* for values used to display to the user.
*
* @param start the start of the range (inclusive)
* @param end the end of the range (inclusive)
* @param displayedValues the values displayed to the user.
*/
public void setRange(int start, int end, String[] displayedValues) {
mDisplayedValues = displayedValues;
mStart = start;
mEnd = end;
mCurrent = start;
updateView();
}
public void setCurrent(int current) {
mCurrent = current;
updateView();
}
/**
* The speed (in milliseconds) at which the numbers will scroll
* when the the +/- buttons are longpressed. Default is 300ms.
*/
public void setSpeed(long speed) {
mSpeed = speed;
}
public void onClick(View v) {
validateInput(mText);
if (!mText.hasFocus()) mText.requestFocus();
// now perform the increment/decrement
if (R.id.increment == v.getId()) {
changeCurrent(mCurrent + 1);
} else if (R.id.decrement == v.getId()) {
changeCurrent(mCurrent - 1);
}
}
private String formatNumber(int value) {
return (mFormatter != null)
? mFormatter.toString(value)
: String.valueOf(value);
}
protected void changeCurrent(int current) {
// Wrap around the values if we go past the start or end
if (current > mEnd) {
current = mStart;
} else if (current < mStart) {
current = mEnd;
}
mPrevious = mCurrent;
mCurrent = current;
notifyChange();
updateView();
}
protected void notifyChange() {
if (mListener != null) {
mListener.onChanged(this, mPrevious, mCurrent);
}
}
protected void updateView() {
/* If we don't have displayed values then use the
* current number else find the correct value in the
* displayed values for the current number.
*/
if (mDisplayedValues == null) {
mText.setText(formatNumber(mCurrent));
} else {
mText.setText(mDisplayedValues[mCurrent - mStart]);
}
mText.setSelection(mText.getText().length());
System.out.println("my value in number picker"+mText.getText().length());
System.out.println("my value in number picker"+mText.getText().toString());
quantityForOrder = mText.getText().toString();
System.out.println("my value with static : "+quantityForOrder);
}
private void validateCurrentView(CharSequence str) {
int val = getSelectedPos(str.toString());
if ((val >= mStart) && (val <= mEnd)) {
if (mCurrent != val) {
mPrevious = mCurrent;
mCurrent = val;
notifyChange();
}
}
updateView();
}
public void onFocusChange(View v, boolean hasFocus) {
/* When focus is lost check that the text field
* has valid values.
*/
if (!hasFocus) {
validateInput(v);
}
}
private void validateInput(View v) {
String str = String.valueOf(((TextView) v).getText());
if ("".equals(str)) {
// Restore to the old value as we don't allow empty values
updateView();
} else {
// Check the new value and ensure it's in range
validateCurrentView(str);
}
}
/**
* We start the long click here but rely on the {@link NumberPickerButton}
* to inform us when the long click has ended.
*/
public boolean onLongClick(View v) {
/* The text view may still have focus so clear it's focus which will
* trigger the on focus changed and any typed values to be pulled.
*/
mText.clearFocus();
if (R.id.increment == v.getId()) {
mIncrement = true;
mHandler.post(mRunnable);
} else if (R.id.decrement == v.getId()) {
mDecrement = true;
mHandler.post(mRunnable);
}
return true;
}
public void cancelIncrement() {
mIncrement = false;
}
public void cancelDecrement() {
mDecrement = false;
}
private static final char[] DIGIT_CHARACTERS = new char[] {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'
};
private NumberPickerButton mIncrementButton;
private NumberPickerButton mDecrementButton;
private class NumberPickerInputFilter implements InputFilter {
public CharSequence filter(CharSequence source, int start, int end,
Spanned dest, int dstart, int dend) {
if (mDisplayedValues == null) {
return mNumberInputFilter.filter(source, start, end, dest, dstart, dend);
}
CharSequence filtered = String.valueOf(source.subSequence(start, end));
String result = String.valueOf(dest.subSequence(0, dstart))
+ filtered
+ dest.subSequence(dend, dest.length());
String str = String.valueOf(result).toLowerCase();
for (String val : mDisplayedValues) {
val = val.toLowerCase();
if (val.startsWith(str)) {
return filtered;
}
}
return "";
}
}
private class NumberRangeKeyListener extends NumberKeyListener {
// XXX This doesn't allow for range limits when controlled by a
// soft input method!
public int getInputType() {
return InputType.TYPE_CLASS_NUMBER;
}
@Override
protected char[] getAcceptedChars() {
return DIGIT_CHARACTERS;
}
@Override
public CharSequence filter(CharSequence source, int start, int end,
Spanned dest, int dstart, int dend) {
CharSequence filtered = super.filter(source, start, end, dest, dstart, dend);
if (filtered == null) {
filtered = source.subSequence(start, end);
}
String result = String.valueOf(dest.subSequence(0, dstart))
+ filtered
+ dest.subSequence(dend, dest.length());
if ("".equals(result)) {
return result;
}
int val = getSelectedPos(result);
/* Ensure the user can't type in a value greater
* than the max allowed. We have to allow less than min
* as the user might want to delete some numbers
* and then type a new number.
*/
if (val > mEnd) {
return "";
} else {
return filtered;
}
}
}
private int getSelectedPos(String str) {
if (mDisplayedValues == null) {
return Integer.parseInt(str);
} else {
for (int i = 0; i < mDisplayedValues.length; i++) {
/* Don't force the user to type in jan when ja will do */
str = str.toLowerCase();
if (mDisplayedValues[i].toLowerCase().startsWith(str)) {
return mStart + i;
}
}
/* The user might have typed in a number into the month field i.e.
* 10 instead of OCT so support that too.
*/
try {
return Integer.parseInt(str);
} catch (NumberFormatException e) {
/* Ignore as if it's not a number we don't care */
}
}
return mStart;
}
/**
* @return the current value.
*/
public int getCurrent() {
return mCurrent;
}
}
如果我通过键盘编辑 editetxt 框，那么我会收到以下错误。
10-08 16:16:01.194：WARN/System.err(27016)：java.lang.NumberFormatException：无法将“null”解析为整数 10-08 16:16:01.202：WARN/System.err(27016)：在 java.lang.Integer.parseInt(Integer.java:406) 10-08 16:16:01.202: WARN/System.err(27016): 在 java.lang.Integer.parseInt(Integer.java:382) 10- 08 16:16:01.202: WARN/System.err(27016): at com.cpt.coffee.activity.CoffeeOrder$EfficientAdapter$1$1.onClick(CoffeeOrder.java:316) 10-08 16:16:01.202: WARN/ System.err(27016): 在 android.view.View.performClick(View.java:2408) 10-08 16:16:01.202: WARN/System.err(27016): 在 android.view.View$PerformClick.run (View.java:8816) 10-08 16:16:01.202: WARN/System.err(27016): 在 android.os.Handler.handleCallback(Handler.java:587) 10-08 16:16:01.202: WARN /System.err(27016): 在 android.os.Handler.dispatchMessage(Handler.java:92) 10-08 16:16:01.202: WARN/System.err(27016): 在 android.os.Looper.loop(Looper.java:123) 10-08 16:16:01.202: WARN/System.err( 27016): 在 android.app.ActivityThread.main(ActivityThread.java:4627) 10-08 16:16:01.212: WARN/System.err(27016): 在 java.lang.reflect.Method.invokeNative(Native Method) 10-08 16:16:01.212: WARN/System.err(27016): 在 java.lang.reflect.Method.invoke(Method.java:521) 10-08 16:16:01.212: WARN/System.err( 27016): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 10-08 16:16:01.212: WARN/System.err(27016): 在 com.android.internal.os .ZygoteInit.main(ZygoteInit.java:626) 10-08 16:16:01.212: WARN/System.err(27016): at dalvik.system.NativeStart.main(Native Method)WARN/System.err(27016): at android.app.ActivityThread.main(ActivityThread.java:4627) 10-08 16:16:01.212: WARN/System.err(27016): at java.lang.reflect.Method .invokeNative(Native Method) 10-08 16:16:01.212: WARN/System.err(27016): at java.lang.reflect.Method.invoke(Method.java:521) 10-08 16:16:01.212: WARN/System.err(27016): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 10-08 16:16:01.212: WARN/System.err(27016): at com .android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 10-08 16:16:01.212: WARN/System.err(27016): at dalvik.system.NativeStart.main(Native Method)WARN/System.err(27016): at android.app.ActivityThread.main(ActivityThread.java:4627) 10-08 16:16:01.212: WARN/System.err(27016): at java.lang.reflect.Method .invokeNative(Native Method) 10-08 16:16:01.212: WARN/System.err(27016): at java.lang.reflect.Method.invoke(Method.java:521) 10-08 16:16:01.212: WARN/System.err(27016): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 10-08 16:16:01.212: WARN/System.err(27016): at com .android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 10-08 16:16:01.212: WARN/System.err(27016): at dalvik.system.NativeStart.main(Native Method)错误（27016）：在 java.lang.reflect.Method.invoke（Method.java:521）10-08 16:16:01.212：WARN/System.err（27016）：在 com.android.internal.os.ZygoteInit $MethodAndArgsCaller.run(ZygoteInit.java:868) 10-08 16:16:01.212: WARN/System.err(27016): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 10- 08 16:16:01.212：WARN/System.err（27016）：在 dalvik.system.NativeStart.main（本机方法）错误（27016）：在 java.lang.reflect.Method.invoke（Method.java:521）10-08 16:16:01.212：WARN/System.err（27016）：在 com.android.internal.os.ZygoteInit $MethodAndArgsCaller.run(ZygoteInit.java:868) 10-08 16:16:01.212: WARN/System.err(27016): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 10- 08 16:16:01.212：WARN/System.err（27016）：在 dalvik.system.NativeStart.main（本机方法）