android如何实现密码框右侧显示小眼睛

<&#63;xml version="1.0" encoding="utf-8"&#63;>  <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;      }    }  }