android实现密码框右侧显示小眼睛

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="#ffffff"
  android:orientation="vertical" >
 
  <LinearLayout
 
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="12dp" >
 
    <RelativeLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content" >
 
      <EditText
        android:paddingTop="10dp"
        android:background="@drawable/selector_sign"
        android:id="@ id/et_usertel"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:hint="@string/editText_phont"
        android:inputType="phone"
        android:paddingLeft="90dp"
        android:singleLine="true"
        android:textColorHint="#DDDDDD"
        android:textSize="16sp" />
 
      <EditText
        android:id="@ id/edt_chosed_country_num"
        android:layout_width="60dp"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@id/et_usertel"
        android:layout_centerVertical="true"
        android:layout_marginLeft="10dp"
        android:background="@color/white"
        android:inputType="number"
        android:maxLength="5"
        android:text=" 86"
        android:textColor="#353535"
        android:textSize="16sp" />
    </RelativeLayout>
 
    <LinearLayout
      android:id="@ id/linear_password_code"
      android:visibility="visible"
      android:layout_marginTop="10dp"
      android:orientation="horizontal"
      android:layout_width="match_parent"
      android:layout_height="wrap_content">
      <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
 
        <EditText
          android:background="@drawable/selector_sign"
          android:id="@ id/et_password"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_centerInParent="true"
          android:paddingTop="10dp"
          android:hint="@string/editText_code"
          android:paddingLeft="90dp"
          android:singleLine="true"
          android:textColorHint="#DDDDDD"
          android:textSize="16sp" />
 
        <Button
          android:id="@ id/bu_register_code"
          android:layout_width="wrap_content"
          android:layout_height="40dp"
          android:layout_alignRight="@ id/et_password"
          android:layout_marginRight="2dp"
          android:background="@drawable/shape_border_color_primary_sign"
          android:text="@string/verification_code"
          android:textColor="@drawable/selector_text_color_primary"
          android:textSize="16sp" />
        <!-- <View
           android:layout_marginTop="1dp"
           android:layout_alignBottom="@ id/bu_code"
           android:layout_width="290dp"
           android:layout_height="1dp"
           android:background="@color/light_grey"/>-->
 
      </RelativeLayout>
 
 
    </LinearLayout>
 
    <LinearLayout
      android:id="@ id/password_liner"
      android:visibility="gone"
      android:layout_marginTop="10dp"
      android:orientation="horizontal"
      android:layout_width="match_parent"
      android:layout_height="wrap_content">
      <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
 
        <EditText
          android:background="@drawable/selector_sign"
          android:id="@ id/et_password_code"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_centerInParent="true"
          android:paddingTop="10dp"
          android:hint="请输入密码登录"
          android:paddingLeft="90dp"
          android:singleLine="true"
          android:textColorHint="#DDDDDD"
          android:inputType="textPassword"
          android:textSize="16sp" />
 
        <ImageView
          android:id="@ id/imageView"
          android:layout_width="20dp"
          android:layout_height="20dp"
          android:layout_alignParentRight="true"
          android:layout_margin="10dp" />
      </RelativeLayout>
 
 
    </LinearLayout>
 
 
    <Button
      android:textColor="@color/background"
      android:layout_marginTop="10dp"
      android:background="@drawable/shape_color_primary"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:text="登录"/>
 
 
    <LinearLayout
      android:layout_marginTop="2dp"
      android:layout_width="match_parent"
      android:layout_height="wrap_content">
      <TextView
        android:textStyle="bold"
        android:gravity="center"
        android:text="使用密码登录 >"
        android:id="@ id/tv_register_login_password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    </LinearLayout>
 
  </LinearLayout>
 
 
</LinearLayout>

<LinearLayout
      android:id="@ id/password_liner"
      android:visibility="gone"
      android:layout_marginTop="10dp"
      android:orientation="horizontal"
      android:layout_width="match_parent"
      android:layout_height="wrap_content">
      <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
 
        <EditText
          android:background="@drawable/selector_sign"
          android:id="@ id/et_password_code"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_centerInParent="true"
          android:paddingTop="10dp"
          android:hint="请输入密码登录"
          android:paddingLeft="90dp"
          android:singleLine="true"
          android:textColorHint="#DDDDDD"
          android:inputType="textPassword"
          android:textSize="16sp" />
 
        <ImageView
          android:id="@ id/imageView"
          android:layout_width="20dp"
          android:layout_height="20dp"
          android:layout_alignParentRight="true"
          android:layout_margin="10dp" />
      </RelativeLayout>
 
</LinearLayout>

private boolean isHideFirst = true;// 输入框密码是否是隐藏的，默认为true
 
  if (isHideFirst == true) {
            imageView.setImageResource(R.drawable.open);
            //密文
            HideReturnsTransformationMethod method1 = HideReturnsTransformationMethod.getInstance();
            et_password_code.setTransformationMethod(method1);
            isHideFirst = false;
          } else {
            imageView.setImageResource(R.drawable.close);
            //密文
            TransformationMethod method = PasswordTransformationMethod.getInstance();
            et_password_code.setTransformationMethod(method);
            isHideFirst = true;
 
          }
     // 光标的位置 
    int index = et_password_code.getText().toString().length();
    et_password_code.setSelection(index);

package com.ynrd.entrepreneur.activity;
 
import androidx.appcompat.app.AppCompatActivity;
 
import android.os.Bundle;
import android.text.method.HideReturnsTransformationMethod;
import android.text.method.PasswordTransformationMethod;
import android.text.method.TransformationMethod;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
 
import com.ynrd.entrepreneur.R;
import com.ynrd.entrepreneur.utils.CountDownTimerUtils;
 
public class RegisterActivity extends BaseCommonActivity implements View.OnClickListener {
 
  private Button bu_register_code;
  private TextView tv_register_login_password;
  private boolean isHideFirst = true;// 输入框密码是否是隐藏的，默认为true
  private boolean isFirst = true;// 是否密码登录,默认是验证码登录
 
  private ImageView imageView;
  private EditText et_password_code;
  private LinearLayout linear_password_code,password_liner;
 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_register);
  }
 
  @Override
  protected void initViews() {
    super.initViews();
    //获取验证码
    bu_register_code = findViewById(R.id.bu_register_code);
    tv_register_login_password = findViewById(R.id.tv_register_login_password);
    imageView = findViewById(R.id.imageView);
    et_password_code = findViewById(R.id.et_password_code);
    linear_password_code = findViewById(R.id.linear_password_code);
    password_liner = findViewById(R.id.password_liner);
  }
 
  @Override
  protected void initListeners() {
    super.initListeners();
    bu_register_code.setOnClickListener(this);
    tv_register_login_password.setOnClickListener(this);
    imageView.setOnClickListener(this);
    imageView.setImageResource(R.drawable.close);
  }
 
  @Override
  public void onClick(View v) {
    switch (v.getId()){
      case R.id.bu_register_code:
        //验证码方法 后期调用服务器
        CountDownTimerUtils mCountDownTimerUtils = new CountDownTimerUtils(bu_register_code, 30000, 1000);
        mCountDownTimerUtils.start();
        break;
      case R.id.tv_register_login_password:
        if (isFirst == true){
          //切换成密码登录
          linear_password_code.setVisibility(View.GONE);
          password_liner.setVisibility(View.VISIBLE);
          tv_register_login_password.setText("使用短信验证码登录 >");
          isFirst = false;
        }else{
          //切换成验证码登录
          linear_password_code.setVisibility(View.VISIBLE);
          password_liner.setVisibility(View.GONE);
          tv_register_login_password.setText("使用密码登录 >");
          isFirst = true;
        }
        break;
      case R.id.imageView:
          if (isHideFirst == true) {
            imageView.setImageResource(R.drawable.open);
            //密文
            HideReturnsTransformationMethod method1 = HideReturnsTransformationMethod.getInstance();
            et_password_code.setTransformationMethod(method1);
            isHideFirst = false;
          } else {
            imageView.setImageResource(R.drawable.close);
            //密文
            TransformationMethod method = PasswordTransformationMethod.getInstance();
            et_password_code.setTransformationMethod(method);
            isHideFirst = true;
 
          }
          // 光标的位置 
          int index = et_password_code.getText().toString().length();
          et_password_code.setSelection(index);
        break;
    }
  }
}