从支持库v24.2.0开始，这真的很容易实现。

你需要做的就是:

Add the design library to your dependencies dependencies { compile "com.android.support:design:24.2.0" } Use TextInputEditText in conjunction with TextInputLayout <android.support.design.widget.TextInputLayout android:id="@+id/etPasswordLayout" android:layout_width="match_parent" android:layout_height="wrap_content" app:passwordToggleEnabled="true" android:layout_marginBottom="@dimen/login_spacing_bottom"> <android.support.design.widget.TextInputEditText android:id="@+id/etPassword" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="@string/fragment_login_password_hint" android:inputType="textPassword"/> </android.support.design.widget.TextInputLayout>

passwordToggleEnabled属性将完成这项工作!

在你的根布局中，不要忘记添加xmlns:app="http://schemas.android.com/apk/res-auto" 您可以使用以下方法自定义密码切换:

app:passwordToggleDrawable -可绘制的使用作为密码输入可见切换图标。 app:passwordToggleTint -用于密码输入可见切换的图标。 app:passwordToggleTintMode -用于应用背景色调的混合模式。

更多细节在TextInputLayout文档。

对于安卓X

将android. design.widget. textinputlayout替换为com.google.android.material.textfield.TextInputLayout 将android.support.design.widget.TextInputEditText替换为com.google.android.material.textfield.TextInputEditText

you can use this

private fun showPasswordSwitch(checked: Boolean) {

    registerBinding.registerActivityEditTextPassword.also {
        // Password hide-show
        it.inputType =
            if (checked) TEXT_PASSWORD_SHOW else TEXT_PASSWORD_HIDE
           
    }
}
const val TEXT_PASSWORD_SHOW = InputType.TYPE_CLASS_TEXT or InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD

const val TEXT_PASSWORD_HIDE = InputType.TYPE_CLASS_TEXT or InputType.TYPE_TEXT_VARIATION_PASSWORD

要显示圆点而不是密码，请设置PasswordTransformationMethod:

yourEditText.setTransformationMethod(new PasswordTransformationMethod());

当然，您可以在XML布局中的edittext元素中默认设置此选项

android:password

要重新显示可读密码，只需传递null作为转换方法:

yourEditText.setTransformationMethod(null);

使用下面的代码

    val hidePasswordMethod = PasswordTransformationMethod()
    showOrHidePasswordButton.setOnClickListener {
        passwordEditText.apply {
            transformationMethod =
                if (transformationMethod is PasswordTransformationMethod) 
                   null //shows password
               else 
                   hidePasswordMethod //hides password
        }
    }

并确保你把它添加到你的密码编辑文本在布局

    android:inputType="textPassword"

private int passwordNotVisible=1; 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
 showPassword = (ImageView) findViewById(R.id.show_password);
    showPassword.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            EditText paswword = (EditText) findViewById(R.id.Password);
            if (passwordNotVisible == 1) {
                paswword.setInputType(InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
                passwordNotVisible = 0;
            } else {

                paswword.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
                passwordNotVisible = 1;
            }


            paswword.setSelection(paswword.length());

        }
    });
}

在XML中这样做

    <LinearLayout
          android:layout_height="wrap_content"
          android:layout_width="fill_parent"
          android:orientation="vertical"
          >
          <RelativeLayout
              android:id="@+id/REFReLayTellFriend"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:orientation="horizontal"
              >
          <EditText
              android:id="@+id/etpass1"
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:background="@android:color/transparent"
              android:bottomLeftRadius="10dp"
              android:bottomRightRadius="50dp"
              android:fontFamily="@font/frutiger"
              android:gravity="start"
              android:inputType="textPassword"
              android:hint="@string/regpass_pass1"
              android:padding="20dp"
              android:paddingBottom="10dp"
              android:textColor="#000000"
              android:textColorHint="#d3d3d3"
              android:textSize="14sp"
              android:topLeftRadius="10dp"
              android:topRightRadius="10dp"/>
              <ImageButton
                  android:id="@+id/imgshowhide1"
                  android:layout_width="40dp"
                  android:layout_height="20dp"
                  android:layout_marginTop="20dp"
                  android:layout_marginRight="10dp"
                  android:background="@drawable/showpass"
                  android:layout_alignRight="@+id/etpass1"/>
          </RelativeLayout>    

 boolean show=true;
 //on image click inside password do this
 if(show){
                imgshowhide2.setBackgroundResource(0);
                imgshowhide2.setBackgroundResource(R.drawable.hide);
                etpass2.setInputType(InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
                etpass2.setSelection(etpass2.getText().length());

                show=false;
            }else{
                imgshowhide2.setBackgroundResource(0);
                imgshowhide2.setBackgroundResource(R.drawable.showpass);
                //etpass1.setInputType(InputType.TYPE_TEXT);
                etpass2.setInputType(InputType.TYPE_CLASS_TEXT |
                        InputType.TYPE_TEXT_VARIATION_PASSWORD);
                etpass2.setSelection(etpass2.getText().length());
                show=true;
            }