EditView密码的显示与隐藏

1、 点击一个控件隐藏/显示 EditText 中的密码

final CheckBox checkbox = (CheckBox) findViewById(R.id.cb);/* add a listener to the CheckBox */checkbox.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener(){      public void onCheckedChanged(CompoundButton buttonView,boolean isChecked){              if(checkbox.isChecked()){                  /* show the password*/               textCarNumberNear.setTransformationMethod(HideReturnsTransformationMethod.getInstance());              }              else{                  /* hide the password */                  textCarNumberNear.setTransformationMethod(PasswordTransformationMethod.getInstance());                 }               }         });

也可以使用

if(isChecked){      //显示密码框内容      mEditPwd.setInputType(InputType.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_NORMAL);  }else{      //隐藏密码框内容      mEditPwd.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);   }  mEditPwd.setSelection(mEditPwd.getText().toString().length());//设置光标位置在文本框末尾

2、 这个里面是用来将输入到 EditText 中的小写字母转化为大写字母的

//----------------小写转化为大写--------------------------//    public class InputLowerToUpper extends ReplacementTransformationMethod{         @Override         protected char[] getOriginal() {             char[] lower = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z' };             return lower;         }         @Override         protected char[] getReplacement() {             char[] upper = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z' };             return upper;         }     }

下面是使用的代码

final EditText textCarNumber=(EditText) viewNew.findViewById(R.id.borrow_carnumber);textCarNumber.setTransformationMethod(new InputLowerToUpper());

转载：http://blog.csdn.net/rainy_day_2014/article/details/51422740