Android实现动态显示或隐藏密码输入框的内容
本文实例展示了Android实现动态显示或隐藏密码输入框内容的方法,分享给大家供大家参考之用。具体方法如下:
该功能可通过设置EditText的setTransformationMethod()方法来实现隐藏密码或者显示密码。
示例代码如下:
private Button mBtnPassword; private EditText mEtPassword; private boolean mbDisplayFlg = false; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mEtPassword = (EditText)findViewById(R.id.password); mBtnPassword = (Button)findViewById(R.id.btnPassword); mBtnPassword.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Log.d("AndroidTest", "mbDisplayFlg = " + mbDisplayFlg); if (!mbDisplayFlg) { // display password text, for example "123456" mEtPassword.setTransformationMethod(HideReturnsTransformationMethod.getInstance()); } else { // hide password, display "." mEtPassword.setTransformationMethod(PasswordTransformationMethod.getInstance()); } mbDisplayFlg = !mbDisplayFlg; mEtPassword.postInvalidate(); } }); }
main.xml文件如下:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <Button android:id="@+id/btnPassword" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="密码" /> <EditText android:id="@+id/password" android:layout_width="fill_parent" android:layout_height="wrap_content" android:password="true" android:textSize="18sp" android:text="123456"> </EditText> </LinearLayout>
希望本文所述对大家的Android程序设计有所帮助。
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