Android动态显示隐藏密码输入框的内容

通过设置EditText的setTransformationMethod()方法来实现隐藏密码或这显示密码，示例如下：

 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() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubLog.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

 

 <?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>