Android布局中对输入密码的隐藏和显示
<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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