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() { @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

 

 <?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>