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Custom EditText class
The idea is similar to Android-custom EditText with delete icon
package com.android02;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.support.v4.content.ContextCompat;
import android.support.v7.widget.AppCompatEditText;
import android.text.Editable;
import android.text.TextWatcher;
import android.text.method.HideReturnsTransformationMethod;
import android.text.method.PasswordTransformationMethod;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.Toast;
/**
* 密码显示隐藏功能
*/
public class VisiblePwd extends AppCompatEditText implements View.OnFocusChangeListener, TextWatcher {
private Drawable clearDrawable;
// 控件是否有焦点
private boolean hasFocus;
//明文还是密文的标志,默认密文
public boolean hasHide=true;
public VisiblePwd(Context context) {
this(context, null);
}
public VisiblePwd(Context context, AttributeSet attrs) {
// 这里构造方法也很重要，不加这个很多属性不能再XML里面定义
this(context, attrs, android.R.attr.editTextStyle);
}
public VisiblePwd(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init() {
// 获取EditText的DrawableRight,假如没有设置我们就使用默认的图片
clearDrawable = getCompoundDrawables()[2];
if (clearDrawable == null) {
// throw new
// NullPointerException("You can add drawableRight attribute in XML");
clearDrawable = ContextCompat.getDrawable(getContext(),R.drawable.hide);
}
// 设置图标的大小
clearDrawable.setBounds(0, 0, 80, 80);
// 默认设置隐藏图标
setClearIconVisible(false);
// 设置焦点改变的监听
setOnFocusChangeListener(this);
// 设置输入框里面内容发生改变的监听
addTextChangedListener(this);
}
/**
* 因为我们不能直接给EditText设置点击事件，
* 因此我们用记住我们按下的位置来模拟点击事件
* 当我们按下的位置
* 在 EditText的宽度 -图标到控件右边的间距 - 图标的宽度 和 EditText的宽度 - 图标到控件右边的间距之间我们就算点击了图标，
*/
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
if (getCompoundDrawables()[2] != null) {
boolean touchable = event.getX() > (getWidth() - getTotalPaddingRight()) && (event.getX() < ((getWidth() - getPaddingRight())));
if (touchable&&getText().length()>0) {
if(hasHide){
clearDrawable = ContextCompat.getDrawable(getContext(),R.drawable.eye);
//设置图标
setCompoundDrawablesWithIntrinsicBounds(null,null,clearDrawable,null);
//将input的类型修改成text，明文
setInputType(EditorInfo.TYPE_TEXT_VARIATION_PASSWORD);
setTransformationMethod(HideReturnsTransformationMethod.getInstance());
hasHide = false;
}
else{
clearDrawable = ContextCompat.getDrawable(getContext(),R.drawable.hide);
setCompoundDrawablesWithIntrinsicBounds(null,null,clearDrawable,null);
//将input的类型修改成password，密文
setTransformationMethod(PasswordTransformationMethod.getInstance());
setInputType(EditorInfo.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
hasHide = true;
}
}
}
}
return super.onTouchEvent(event);
}
/**
* 当ClearEditText焦点发生变化的时候，判断里面字符串长度设置清除图标的显示与隐藏
*/
@Override
public void onFocusChange(View v, boolean hasFocus) {
this.hasFocus = hasFocus;
if (hasFocus) {
setClearIconVisible(getText().length() > 0);
} else {
setClearIconVisible(false);
}
}
/**
* 设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去
*/
protected void setClearIconVisible(boolean visible) {
Drawable right = visible ? clearDrawable : null;
//设置图标大小
clearDrawable.setBounds(0,0,80,80);
setCompoundDrawables(getCompoundDrawables()[0], getCompoundDrawables()[1], right, getCompoundDrawables()[3]);
}
/**
* 当输入框里面内容发生变化的时候回调的方法
*/
@Override
public void onTextChanged(CharSequence s, int start, int count, int after) {
if (hasFocus) {
setClearIconVisible(s.length() > 0);
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
}
layout
Just change EditText to our custom EditText (package name + class name)
effect
