有没有一个聪明的方法让用户在隐藏和查看密码之间切换在一个android EditText? 许多基于PC的应用程序都允许用户这样做。
当前回答
使用下面的代码
val hidePasswordMethod = PasswordTransformationMethod()
showOrHidePasswordButton.setOnClickListener {
passwordEditText.apply {
transformationMethod =
if (transformationMethod is PasswordTransformationMethod)
null //shows password
else
hidePasswordMethod //hides password
}
}
并确保你把它添加到你的密码编辑文本在布局
android:inputType="textPassword"
其他回答
我的Kotlin扩展。编写一次,随处使用
fun EditText.tooglePassWord() {
this.tag = !((this.tag ?: false) as Boolean)
this.inputType = if (this.tag as Boolean)
InputType.TYPE_TEXT_VARIATION_PASSWORD
else
(InputType.TYPE_CLASS_TEXT or InputType.TYPE_TEXT_VARIATION_PASSWORD)
this.setSelection(this.length()) }
您可以将此方法保存在任何文件中,并在任何地方使用它 像这样使用它
ivShowPassword.click { etPassword.tooglePassWord() }
其中ivShowPassword是点击imageview(眼睛)和etPassword是编辑
根据这个来源,如果你已经将你的项目迁移到AndroidX,那么你可以替换
编译”com.android.support:设计:24.2.0”
与
实现“com.google.android.material:材料:1.0.0”
然后你所要做的就是把下面的代码放到你的布局文件中:
<com.google.android.material.textfield.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:passwordToggleEnabled="true"
android:hint="@string/hint_text">
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</com.google.android.material.textfield.TextInputLayout>
关于材质TextInputLayout的更多信息可以在这里找到。
对于这个源码,建议从Android支持库迁移到AndroidX:
AndroidX is the open-source project that the Android team uses to develop, test, package, version and release libraries within Jetpack. AndroidX is a major improvement to the original Android Support Library. Like the Support Library, AndroidX ships separately from the Android OS and provides backwards-compatibility across Android releases. AndroidX fully replaces the Support Library by providing feature parity and new libraries. In addition AndroidX includes the following features: All packages in AndroidX live in a consistent namespace starting with the string androidx. The Support Library packages have been mapped into corresponding androidx.* packages. For a full mapping of all the old classes and build artifacts to the new ones, see the Package Refactoring page. Unlike the Support Library, AndroidX packages are separately maintained and updated. The androidx packages use strict Semantic Versioning starting with version 1.0.0. You can update AndroidX libraries in your project independently. All new Support Library development will occur in the AndroidX library. This includes maintenance of the original Support Library artifacts and introduction of new Jetpack components.
你试过setTransformationMethod吗?它继承自TextView,并希望TransformationMethod作为参数。
你可以在这里找到更多关于TransformationMethods的信息。
它还有一些很酷的功能,比如字符替换。
试试这个:
首先定义一个全局标志,如下所示:
private boolean isShowPassword = false;
并设置监听器处理点击显示和隐藏密码按钮:
imgPassword.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isShowPassword) {
etPassword.setTransformationMethod(new PasswordTransformationMethod());
imgPassword.setImageDrawable(getResources().getDrawable(R.drawable.ic_eye_hide));
isShowPassword = false;
}else{
etPassword.setTransformationMethod(null);
imgPassword.setImageDrawable(getResources().getDrawable(R.drawable.ic_eye_show));
isShowPassword = true;
}
}
});
你可以使用app:passwordToggleEnabled="true"
下面是一个例子
<android.support.design.widget.TextInputLayout
android:id="@+id/password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:passwordToggleEnabled="true"
android:textColorHint="@color/colorhint"
android:textColor="@color/colortext">
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