Android自定义密码输入EditTextLayout

2023-09-08 18:32:06 149

本文为大家分享了Android自定义密码输入的具体代码，供大家参考，具体内容如下

布局

用于密码输入的自定义控件

/**
*Createdbyshowdyon2017/3/15.
*
*一个用于密码输入的自定义控件
*/

publicclassPwdEditLayoutextendsLinearLayoutimplementsTextWatcher,View.OnFocusChangeListener,
View.OnClickListener,CompoundButton.OnCheckedChangeListener{
privateImageViewmDeleteIcon;
privateCheckBoxmShiftIcon;
privateEditTextmEditText;

publicPwdEditLayout(Contextcontext){
this(context,null);
}

publicPwdEditLayout(Contextcontext,AttributeSetattrs){
this(context,attrs,0);
}

publicPwdEditLayout(Contextcontext,AttributeSetattrs,intdefStyleAttr){
super(context,attrs,defStyleAttr);
setOrientation(HORIZONTAL);
setCustomBackground();
}

privatevoidsetCustomBackground(){
GradientDrawablegd=newGradientDrawable();
gd.setCornerRadius(TypedValue.applyDimension(COMPLEX_UNIT_DIP,4,Resources.getSystem().getDisplayMetrics()));
gd.setStroke((int)TypedValue.applyDimension(COMPLEX_UNIT_DIP,1,Resources.getSystem().getDisplayMetrics()),Color.BLUE);
if(Build.VERSION.SDK_INT<16){
this.setBackgroundDrawable(gd);
}else{
this.setBackground(gd);
}
}


/**
*CalledwhenanewchildisadedtothisViewGroup.Overridesshouldalways
*callsuper.onViewAdded.
*
*@paramchildtheaddedchildview
*/
@Override
publicvoidonViewAdded(Viewchild){
super.onViewAdded(child);
if(childinstanceofEditText){
if(getChildCount()!=1){
thrownewIllegalArgumentException("OnlyoneEditTextcanbeaddedinthislayout.");
}
mEditText=(EditText)child;
mEditText.setBackgroundColor(Color.TRANSPARENT);
//关键点1
LayoutInflater.from(getContext()).inflate(R.layout.layout_edittext_pwd,this,true);
mDeleteIcon=(ImageView)findViewById(R.id.delete);
mShiftIcon=(CheckBox)findViewById(R.id.ck_shift);
//关键点2
setAddStatesFromChildren(true);//使得父类获得和子控件相同的状态
mEditText.addTextChangedListener(this);
mEditText.setOnFocusChangeListener(this);
mDeleteIcon.setOnClickListener(this);
mShiftIcon.setOnCheckedChangeListener(this);
//设置默认状态---删除按钮和是否显示密码
mShiftIcon.setChecked(false);
updateDeleteIcon(mEditText.getText().toString(),mEditText.isFocused());
updateShowPassword(mShiftIcon.isChecked());
}
}

@Override
publicvoidbeforeTextChanged(CharSequences,intstart,intcount,intafter){

}

@Override
publicvoidonTextChanged(CharSequences,intstart,intbefore,intcount){
updateDeleteIcon(s.toString(),mEditText.isFocused());
}

@Override
publicvoidafterTextChanged(Editables){

}

@Override
publicvoidonFocusChange(Viewv,booleanhasFocus){
updateDeleteIcon(mEditText.getText().toString(),hasFocus);
}

@Override
publicvoidonClick(Viewv){
switch(v.getId()){
caseR.id.delete:
mEditText.setText("");
break;
}
}

@Override
publicvoidonCheckedChanged(CompoundButtonbuttonView,booleanisChecked){
updateShowPassword(isChecked);
}

/**
*用于是否显示密码
*
*@parampassword
*@paramfocused
*/
privatevoidupdateDeleteIcon(Stringpassword,booleanfocused){
if(!TextUtils.isEmpty(password)&&focused){
mDeleteIcon.setVisibility(VISIBLE);
}else{
mDeleteIcon.setVisibility(INVISIBLE);
}
}

/**
*用于控制是否显示密码
*
*@paramchecked
*/
privatevoidupdateShowPassword(booleanchecked){
if(checked){
mEditText.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
}else{
mEditText.setTransformationMethod(PasswordTransformationMethod.getInstance());
}
mEditText.setSelection(mEditText.getText().toString().length());
}

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

Android自定义密码输入EditTextLayout

热门推荐

随机推荐