android开发分享android密码框右侧显示小眼睛

不知道为什么android 资料好少啊,一艘都2012-2015年的居多….这是为什么呢?

实现效果

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="https://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>

//主要代码如下 

  <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>

重要代码 

    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;         }     } }