我一直在尝试以编程方式将我的 edittext 设置为密码字段,如下所示:
方法一:
password.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);
方法二:
password.setTransformationMethod(PasswordTransformationMethod.getInstance());
方法三:
password.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
方法四:
public class MyPasswordTransformationMethod extends PasswordTransformationMethod {
@Override
public CharSequence getTransformation(CharSequence source, View view) {
return new PasswordCharSequence(source);
}
private class PasswordCharSequence implements CharSequence {
private CharSequence mSource;
public PasswordCharSequence(CharSequence source) {
mSource = source; // Store char sequence
}
public char charAt(int index) {
return '*'; // This is the important part
}
public int length() {
return mSource.length(); // Return default
}
public CharSequence subSequence(int start, int end) {
return mSource.subSequence(start, end); // Return default
}
}
};
// Call the above class using this:
text.setTransformationMethod(new MyPasswordTransformationMethod());
我按如下方式创建了我的edittext:
// Create the password edittext
EditText etPwrd = new EditText(this);
// Customise the password edittext
etPwrd.setLayoutParams(etPwrdParams);
etPwrd.setBackgroundResource(R.drawable.etlogin);
etPwrd.setTextSize(18f);
etPwrd.setLongClickable(false);
etPwrd.setPadding (5,0,0,0);
etPwrd.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
etPwrd.setTransformationMethod(new MyPasswordTransformationMethod());
etPwrd.setTypeface(officialRegularFont);
//etPwrd.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
//etPwrd.setTransformationMethod(PasswordTransformationMethod.getInstance());
etPwrd.setSingleLine();
etPwrd.setHint(R.string.password_text);
etPwrd.setCustomSelectionActionModeCallback(new ActionMode.Callback() {
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return false;
}
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
return false;
}
@Override
public void onDestroyActionMode(ActionMode mode) {
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
});
我使用上述所有方法均未成功,因为当用户键入字符时,edittext 仍会显示字符。
我知道在 XML 中如何将编辑文本设置为密码字段,但我需要以编程方式进行设置。