android开发隐藏和显示密码

来源：互联网发布：物品数据库加载错误编辑：程序博客网时间：2024/05/01 23:19

需求：在开发时遇到登录注册需要输入密码，一般为了提高客户体验，都会有一个按钮，点击后可以查看明文密码。

效果图：
这里写图片描述

这里写图片描述

解决方法：
第一种：

 //显示密码  iv_hide.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                iv_hide.setVisibility(View.GONE);                iv_show.setVisibility(View.VISIBLE);              //显示密码关键代码                et_password                    .setTransformationMethod(HideReturnsTransformationMethod                                .getInstance());                // 切换后将EditText光标置于末尾                CharSequence charSequence = et_password.getText();                if (charSequence instanceof Spannable) {                    Spannable spanText = (Spannable) charSequence;                    Selection.setSelection(spanText, charSequence.length());                }            }        });   //隐藏密码 iv_show.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                iv_show.setVisibility(View.GONE);                iv_hide.setVisibility(View.VISIBLE);                //隐藏密码关键代码                et_password                     .setTransformationMethod(PasswordTransformationMethod                                .getInstance());                // 切换后将EditText光标置于末尾                CharSequence charSequence = et_password.getText();                if (charSequence instanceof Spannable) {                    Spannable spanText = (Spannable) charSequence;                    Selection.setSelection(spanText, charSequence.length());                }            }        });

第二种方法：

//显示密码  iv_hide.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                iv_hide.setVisibility(View.GONE);                iv_show.setVisibility(View.VISIBLE);                //显示密码方法                et_password.setInputType(1);                 // 切换后将EditText光标置于末尾                CharSequence charSequence = et_password.getText();                if (charSequence instanceof Spannable) {                    Spannable spanText = (Spannable) charSequence;                    Selection.setSelection(spanText, charSequence.length());                }            }        });   //隐藏密码 iv_show.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                iv_show.setVisibility(View.GONE);                iv_hide.setVisibility(View.VISIBLE);                //隐藏密码                 et_password.setInputType(129);                // 切换后将EditText光标置于末尾                CharSequence charSequence = et_password.getText();                if (charSequence instanceof Spannable) {                    Spannable spanText = (Spannable) charSequence;                    Selection.setSelection(spanText, charSequence.length());                }            }        });

这两种方法都可以实现，相比第二种可能代码稍微简单些，谢谢观看！

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