Android中edittext使用代码切换密文明文显示的小问题

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在使用edittext的过程中,如果我们在代码中,仅仅只设置为

editText1.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);

的话,会不会有任何作用的
然后这里有一个地方需要引起我们的注意,需要注意XML部分参数值在Java代码中设置时要达到相同效果可能java中参数需要由多个参数组合使用。

使用代码设置类似XML效果参数时若为达到效果应查找相关类似的参数表。

Constant	Value	Description
none	0x00000000	There is no content type. The text is not editable.
text	0x00000001	Just plain old text. Corresponds to TYPE_CLASS_TEXT | TYPE_TEXT_VAR | ATION_NORMAL.
textCapCharacters	0x00001001	Can be combined with text and its variations to request capitalization of all characters. Corresponds to TYPE_TEXT_FLAG_CAP_CHARACTERS.
textCapWords	0x00002001	Can be combined with text and its variations to request capitalization of the first character of every word. Corresponds to TYPE_TEXT_FLAG_CAP_WORDS.
textCapSentences	0x00004001	Can be combined with text and its variations to request capitalization of the first character of every sentence. Corresponds toTYPE_TEXT_FLAG_CAP_SENTENCES.
textAutoCorrect	0x00008001	Can be combined with text and its variations to request auto-correction of text being input. Corresponds to TYPE_TEXT_FLAG_AUTO_CORRECT.
textAutoComplete	0x00010001	Can be combined with text and its variations to specify that this field will be doing its own auto-completion and talking with the input method appropriately. Corresponds to TYPE_TEXT_FLAG_AUTO_COMPLETE.
textMultiLine	0x00020001	Can be combined with text and its variations to allow multiple lines of text in the field. If this flag is not set, the text field will be constrained to a single line. Corresponds to TYPE_TEXT_FLAG_MULTI_LINE.
textImeMultiLine	0x00040001	Can be combined with text and its variations to indicate that though the regular text view should not be multiple lines, the IME should provide multiple lines if it can. Corresponds to TYPE_TEXT_FLAG_IME_MULTI_LINE.
textNoSuggestions	0x00080001	Can be combined with text and its variations to indicate that the IME should not show any dictionary-based word suggestions. Corresponds toTYPE_TEXT_FLAG_NO_SUGGESTIONS.
textUri	0x00000011	Text that will be used as a URI. Corresponds to TYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_URI.
textEmailAddress	0x00000021	Text that will be used as an e-mail address. Corresponds toTYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_EMAIL_ADDRESS.
textEmailSubject	0x00000031	Text that is being supplied as the subject of an e-mail. Corresponds toTYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_EMAIL_SUBJECT.
textShortMessage	0x00000041	Text that is the content of a short message. Corresponds toTYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_SHORT_MESSAGE.
textLongMessage	0x00000051	Text that is the content of a long message. Corresponds toTYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_LONG_MESSAGE.
textPersonName	0x00000061	Text that is the name of a person. Corresponds to TYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_PERSON_NAME.
textPostalAddress	0x00000071	Text that is being supplied as a postal mailing address. Corresponds toTYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_POSTAL_ADDRESS.
textPassword	0x00000081	Text that is a password. Corresponds to TYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_PASSWORD.
textVisiblePassword	0x00000091	Text that is a password that should be visible. Corresponds toTYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_VISIBLE_PASSWORD.
textWebEditText	0x000000a1	Text that is being supplied as text in a web form. Corresponds toTYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_WEB_EDIT_TEXT.
textFilter	0x000000b1	Text that is filtering some other data. Corresponds to TYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_FILTER.
textPhonetic	0x000000c1	Text that is for phonetic pronunciation, such as a phonetic name field in a contact entry. Corresponds to TYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_PHONETIC.
textWebEmailAddress	0x000000d1	Text that will be used as an e-mail address on a web form. Corresponds toTYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS.
textWebPassword	0x000000e1	Text that will be used as a password on a web form. Corresponds toTYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_WEB_PASSWORD.
number	0x00000002	A numeric only field. Corresponds to TYPE_CLASS_NUMBER | TYPE_NUMBER_VARIATION_NORMAL.
numberSigned	0x00001002	Can be combined with number and its other options to allow a signed number. Corresponds to TYPE_CLASS_NUMBER | TYPE_NUMBER_FLAG_SIGNED.
numberDecimal	0x00002002	Can be combined with number and its other options to allow a decimal (fractional) number. Corresponds to TYPE_CLASS_NUMBER | TYPE_NUMBER_FLAG_DECIMAL.
numberPassword	0x00000012	A numeric password field. Corresponds to TYPE_CLASS_NUMBER | TYPE_NUMBER_VARIATION_PASSWORD.
phone	0x00000003	For entering a phone number. Corresponds to TYPE_CLASS_PHONE.
datetime	0x00000004	For entering a date and time. Corresponds to TYPE_CLASS_DATETIME | TYPE_DATETIME_VARIATION_NORMAL.
date	0x00000014	For entering a date. Corresponds to TYPE_CLASS_DATETIME | TYPE_DATETIME_VARIATION_DATE.
time	0x00000024	For entering a time. Corresponds to TYPE_CLASS_DATETIME | TYPE_DATETIME_VARIATION_TIME

//显示方式
if (isChecked) {  
    //密文
        mPswEdt.setInputType(InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);  
                  
    } else {  
    //明文
        mPswEdt.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);  
    }  

使用这种方式，使用代码修改密码显示，会有一个小问题，就是显示的密码的*和原本的显示有一点差距，大小比原本的大一点点，使用起来比较难受，密码长度上去以后就会看出差距，解决也不算难，在init的时候，就直接设置一次就可以，强行全部变大，就看不出差距了。但是对于有强迫证的人来说，这种方式不算很完美。对于密码的显示问题可以使用下面这种方式。

---

第二种方式

//显示方式
if (isChecked) {  
    //显示明文
        mPswEdt.setTransformationMethod(HideReturnsTransformationMethod.getInstance());      
    } else {              
    //显示密文
        mPswEdt.setTransformationMethod(PasswordTransformationMethod.getInstance());      
    }  

这种方式就没有问题了。