Android布局中对输入密码的隐藏和显示（一）

来源：互联网发布：淘宝代销怎样关联编辑：程序博客网时间：2024/06/01 08:09

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:paddingBottom="@dimen/activity_vertical_margin"    android:orientation="vertical"    tools:context=".MainActivity">    <LinearLayout        android:orientation="horizontal"        android:layout_width="match_parent"        android:layout_height="wrap_content"        >        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="姓名："            android:id="@+id/textView" />        <EditText            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:id="@+id/tv1"            android:layout_weight="0.91" />    </LinearLayout>    <LinearLayout        android:orientation="horizontal"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:weightSum="1">        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="密码："            android:id="@+id/textView1"            />        <EditText            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:id="@+id/password"            android:inputType="textPassword"/>    </LinearLayout>    <CheckBox        android:id="@+id/check"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="显示密码" />    <LinearLayout        android:orientation="horizontal"        android:layout_width="match_parent"        android:layout_height="wrap_content"        >        <Button            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="登录"            android:id="@+id/btnl"            android:layout_weight="1"/>        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text=""            android:layout_weight="100"            android:id="@+id/textView2" />        <Button            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="退出"            android:id="@+id/button2"            android:layout_weight="1"            android:layout_toEndOf="@+id/textView2"            android:layout_gravity="right" />    </LinearLayout></LinearLayout>

package com.banana.k08.home;import android.app.Activity;import android.os.Bundle;import android.text.method.HideReturnsTransformationMethod;import android.text.method.PasswordTransformationMethod;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity {    private EditText id,password;    private CheckBox cb;    private Button btn1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        id = (EditText) findViewById(R.id.tv1);        password = (EditText) findViewById(R.id.password);        cb = (CheckBox) findViewById(R.id.check);        //设置选择是否显示密码        cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {            @Override            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {                if(cb.isChecked()){                    password.setTransformationMethod(HideReturnsTransformationMethod.getInstance());                }                else{                    password.setTransformationMethod(PasswordTransformationMethod.getInstance());                }            }        });        findViewById(R.id.btnl).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                String name = id.getText().toString();                String pass = password.getText().toString();                if (name.equals("admin") && pass.equals("admin")) {                    Toast.makeText(getApplicationContext(),"登陆成功",Toast.LENGTH_SHORT).show();                } else {                    Toast.makeText(getApplicationContext(), "登陆失败，请重新输入", Toast.LENGTH_SHORT).show();                }            }        });    }    }

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