很多时候，我们为了用户的隐私安全，需要在密码输入的时候，显示密文。为了更好的用户体验，我们给用户提供了可以切换明密文的小图标(小眼睛)

先来看一下效果图：

这里我们可以有两种实现方式：

一、

布局文件：

android:layout_width="match_parent"

android:layout_height="wrap_content">

android:id="@+id/editText"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:background="@drawable/et_bg"

android:inputType="textPassword"

android:maxLength="10" />

android:id="@+id/imageView"

android:layout_width="20dp"

android:layout_height="20dp"

android:layout_alignParentRight="true"

android:layout_margin="10dp" />

activity中使用：

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private EditText editText;

private ImageView imageView;

private boolean isHideFirst = true;// 输入框密码是否是隐藏的，默认为true

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

editText = (EditText) findViewById(R.id.editText);

imageView = (ImageView) findViewById(R.id.imageView);

imageView.setOnClickListener(this);

imageView.setImageResource(R.drawable.close);

}

@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.imageView:

if (isHideFirst == true) {

imageView.setImageResource(R.drawable.open);

//密文

HideReturnsTransformationMethod method1 = HideReturnsTransformationMethod.getInstance();

editText.setTransformationMethod(method1);

isHideFirst = false;

} else {

imageView.setImageResource(R.drawable.close);

//密文

TransformationMethod method = PasswordTransformationMethod.getInstance();

editText.setTransformationMethod(method);

isHideFirst = true;

}

// 光标的位置

int index = editText.getText().toString().length();

editText.setSelection(index);

break;

}

}

}二、

xml中：

android:layout_marginTop="20dp"

android:layout_width="match_parent"

android:layout_height="wrap_content">

android:id="@+id/editText1"

android:layout_width="match_parent"

android:paddingRight="10dp"

android:layout_height="wrap_content"

android:inputType="textPassword"

android:background="@drawable/et_bg"

android:maxLength="10"

android:drawableRight="@drawable/close" />

activity中使用：

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private EditText editText1;

private boolean isHideFirst = true;// 输入框密码是否是隐藏的，默认为true

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

editText1 = (EditText) findViewById(R.id.editText1);

final Drawable[] drawables = editText1.getCompoundDrawables();

final int eyeWidth = drawables[2].getBounds().width();// 眼睛图标的宽度

final Drawable drawableEyeOpen = getResources().getDrawable(R.drawable.open);

drawableEyeOpen.setBounds(drawables[2].getBounds());//这一步不能省略

editText1.setOnTouchListener(new View.OnTouchListener() {

@Override

public boolean onTouch(View v, MotionEvent event) {

if (event.getAction() == MotionEvent.ACTION_UP) {

float et_pwdMinX = v.getWidth() - eyeWidth - editText1.getPaddingRight();

float et_pwdMaxX = v.getWidth();

float et_pwdMinY = 0;

float et_pwdMaxY = v.getHeight();

float x = event.getX();

float y = event.getY();

if (x < et_pwdMaxX && x > et_pwdMinX && y > et_pwdMinY && y < et_pwdMaxY) {

// 点击了眼睛图标的位置

isHideFirst = !isHideFirst;

if (isHideFirst) {

editText1.setCompoundDrawables(null,

null,

drawables[2], null);

editText1.setTransformationMethod(PasswordTransformationMethod.getInstance());

} else {

editText1.setCompoundDrawables(null, null,

drawableEyeOpen,

null);

editText1.setTransformationMethod(HideReturnsTransformationMethod.getInstance());

}

}

}

return false;

}

}

);

}

}

还有et_bg.xml：

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

android:width="8dp"

android:color="#ffffff" />

android:bottom="5dp"

android:left="5dp"

android:right="5dp"

android:top="5dp" />

demo地址：