自定义密码输入框

功能：
1.自定义长度，改一个数字就可改变密码输入框长度
2.可使用虚拟键盘输入也可以使用实体键盘输入
3.可以直接在外部界面输入，也可以在弹出的输入界面输入。

1.自定义长度，改一个数字就可改变密码输入框长度

使用设置后再追加的方式。我的做法是用一个自定义布局封装一下。

public class PayPwdLayout extends LinearLayout {
    public PayPwdLayout(Context context) {
        super(context);
    }

    public PayPwdLayout(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public PayPwdLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    public PayPwdLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    public void setPwdLen(int len){
        if(len <=0){
            return;
        }
        removeAllViews();
        for (int i = 0; i < len; i++) {
            TextView tv = new TextView(getContext());
            tv.setPadding(50, 50, 50, 50);
            tv.setText("");
            tv.setGravity(Gravity.CENTER);
            tv.setBackgroundDrawable(getResources().getDrawable(R.drawable.bg_card));
            addView(tv);
            LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) tv.getLayoutParams();
            params.height = LinearLayout.LayoutParams.WRAP_CONTENT;
            params.width = 0;
            params.weight = 1;
            tv.setLayoutParams(params);
        }

        initEditText();
    }

private void initEditText() {
        EditText editText = new EditText(getContext());
        editText.setBackgroundColor(0);
        editText.setInputType(InputType.TYPE_CLASS_NUMBER);
        addView(editText);

        LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) editText.getLayoutParams();
        params.height = 1;
        params.width = 1;
        editText.setLayoutParams(params);

        editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {
                LinearLayout linear_pwd = (LinearLayout) findViewById(R.id.linear_pwd);
                if (s.length() == linear_pwd.getChildCount()-1) {
                    hideKeyboard();
                    if(mOnCheckPwdListener !=null){
                        mOnCheckPwdListener.check(s.toString());
                    }
                }

                for (int i = 0; i < s.length(); i++) {//●
                    TextView tv = (TextView) linear_pwd.getChildAt(i);
                    tv.setText("●");
                }
                for (int j = s.length(); j < linear_pwd.getChildCount()-1; j++) {
                    TextView tv = (TextView) linear_pwd.getChildAt(j);
                    tv.setText("");
                }
            }
        });
    }
}

布局里面就把此布局设为：

  <com.dyy.yonxin.library2.test.paypwd.PayPwdLayout
        android:id="@+id/linear_pwd"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:background="@drawable/bg_card"
        android:orientation="horizontal"/>

然后，在java代码中，使用如下写法：

final int PWD_LEN = 5;//此处设置密码长度
PayPwdLayout layout = (PayPwdLayout)findViewById(R.id.linear_pwd);
layout.setPwdLen(PWD_LEN);

可以看到，自定义布局时有个EditText，但是大小1px*1px，几乎不可见。这里是因为，如果隐藏EditText，则EditText会屏蔽输入事件，文本长度变化不会被监听。我的设计思路是，在EditText进行输入时，同步显示上方密码的个数，实际内容则是根据EditText内容进行获取的。此时，会有两种输入方式，虚拟键盘和实体键盘。

虚拟键盘输入和实体键盘输入

虚拟键盘输入，需要弹出键盘并让EditText获取焦点：

/**
     * 虚拟键盘方式输入
     */
    public void showKeyboardInput(){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            editText.requestFocus();
            showKeyboard();
        }
    }

实体键盘要考虑到可能出现的功能，基本功能有：设置文本，追加文本，回退一格，清除全部

/**
     * 实体键盘输入追加
     * @param text
     */
    public void appendText(String text){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            String beforeTxt = editText.getText().toString();
            if(beforeTxt.length()+text.length() <= getChildCount()-1)
                editText.setText(editText.getText().toString()+text);
        }
    }

    public void delLastText(){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            String beforeText = editText.getText().toString();
            if(beforeText.length()>0)
            editText.setText(beforeText.substring(0,beforeText.length()-1));
        }
    }
    /**
     * 强制设置内容
     * @param text
     */
    public void setText(String text){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            editText.setText(text);
        }
    }

    public void clear(){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            editText.setText("");
        }
    }

全部用法：
自定义控件：

package com.dyy.yonxin.library2.test.paypwd;

import android.app.Activity;
import android.content.Context;
import android.graphics.Rect;
import android.os.Build;
import android.support.annotation.Nullable;
import android.support.annotation.RequiresApi;
import android.text.Editable;
import android.text.InputType;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.dyy.yonxin.library2.test.R;

/**
 * Created by 段钰莹 on 2018/3/30.
 */

public class PayPwdLayout extends LinearLayout {
    public PayPwdLayout(Context context) {
        super(context);
    }

    public PayPwdLayout(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public PayPwdLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    public PayPwdLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        setBackgroundDrawable(getResources().getDrawable(R.drawable.bg_card));
    }

    public void setPwdLen(int len){
        if(len <=0){
            return;
        }
        removeAllViews();
        for (int i = 0; i < len; i++) {
            TextView tv = new TextView(getContext());
            tv.setPadding(50, 50, 50, 50);
            tv.setText("");
            tv.setGravity(Gravity.CENTER);
            tv.setBackgroundDrawable(getResources().getDrawable(R.drawable.bg_card));
            addView(tv);
            LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) tv.getLayoutParams();
            params.height = LinearLayout.LayoutParams.WRAP_CONTENT;
            params.width = 0;
            params.weight = 1;
            tv.setLayoutParams(params);
        }

        initEditText();
    }

    private void initEditText() {
        EditText editText = new EditText(getContext());
        editText.setBackgroundColor(0);
        editText.setInputType(InputType.TYPE_CLASS_NUMBER);
        addView(editText);

        LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) editText.getLayoutParams();
        params.height = 1;
        params.width = 1;
        editText.setLayoutParams(params);

        editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {
                LinearLayout linear_pwd = (LinearLayout) findViewById(R.id.linear_pwd);
                if (s.length() == linear_pwd.getChildCount()-1) {
                    hideKeyboard();
                    if(mOnCheckPwdListener !=null){
                        mOnCheckPwdListener.check(s.toString());
                    }
                }

                for (int i = 0; i < s.length(); i++) {//●
                    TextView tv = (TextView) linear_pwd.getChildAt(i);
                    tv.setText("●");
                }
                for (int j = s.length(); j < linear_pwd.getChildCount()-1; j++) {
                    TextView tv = (TextView) linear_pwd.getChildAt(j);
                    tv.setText("");
                }
            }
        });
    }

    /**
     * 虚拟键盘方式输入
     */
    public void showKeyboardInput(){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            editText.requestFocus();
            showKeyboard();
        }
    }

    /**
     * 实体键盘输入追加
     * @param text
     */
    public void appendText(String text){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            String beforeTxt = editText.getText().toString();
            if(beforeTxt.length()+text.length() <= getChildCount()-1)
                editText.setText(editText.getText().toString()+text);
        }
    }

    public void delLastText(){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            String beforeText = editText.getText().toString();
            if(beforeText.length()>0)
            editText.setText(beforeText.substring(0,beforeText.length()-1));
        }
    }
    /**
     * 强制设置内容
     * @param text
     */
    public void setText(String text){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            editText.setText(text);
        }
    }

    private void showKeyboard() {
        InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
    }

    public void clear(){
        if(getChildCount()>0 && getChildAt(getChildCount()-1) instanceof EditText){
            EditText editText = (EditText) getChildAt(getChildCount()-1);
            editText.setText("");
        }
    }

    private OnCheckPwdListener mOnCheckPwdListener;
    public void setOnCheckPwdListener(OnCheckPwdListener checkPwdListener){
        mOnCheckPwdListener = checkPwdListener;
    }

    public interface OnCheckPwdListener{
        void check(String pwd);
    }

    protected boolean isSoftShowing() {
        //获取当前屏幕内容的高度
        int screenHeight = getActivity().getWindow().getDecorView().getHeight();
        //获取View可见区域的bottom
        Rect rect = new Rect();
        getActivity().getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);

        return screenHeight - rect.bottom != 0;
    }


    private void hideKeyboard() {
        InputMethodManager imm = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
        if (imm != null && isSoftShowing()) {
            imm.hideSoftInputFromWindow(getActivity().getWindow().getDecorView().getWindowToken(), 0);
        }
    }

    private Activity getActivity(){
        return (Activity) getContext();
    }
}

调用Activity:

public class PayPwdActivity extends AppCompatActivity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_pay_pwd);

        initPwdLen();
        initData();
        initKeyboard();
        addListener();
        initPopupWindow();
    }


    private void initPopupWindow() {
        findViewById(R.id.btn_popup_pwd).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                PayMoneyWin win = new PayMoneyWin(PayPwdActivity.this, new PayPwdLayout.OnCheckPwdListener(){

                    @Override
                    public void check(String pwd) {
                        checkPwd(pwd);
                    }
                });
//        设置Popupwindow显示位置（从底部弹出）
                win.show(findViewById(R.id.btn_popup_pwd));
            }
        });

    }

    private void addListener() {
        payPwdLayout.setOnCheckPwdListener(new PayPwdLayout.OnCheckPwdListener() {
            @Override
            public void check(String pwd) {
                checkPwd(pwd);
            }
        });
    }

    private PayPwdLayout payPwdLayout;
    private void initPwdLen() {
        payPwdLayout = (PayPwdLayout) findViewById(R.id.linear_pwd);
        payPwdLayout.setPwdLen(8);
    }

    private void initKeyboard() {
        findViewById(R.id.txt_keyboard_1).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_2).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_3).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_4).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_5).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_6).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_7).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_8).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_9).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_0).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_del).setOnClickListener(this);
        findViewById(R.id.txt_keyboard_clear).setOnClickListener(this);
    }


    private void initData() {
        final Button btn_keyboard = (Button) findViewById(R.id.btn_keyboard);
        btn_keyboard.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //这里的判断为了优化视觉效果，不添加则有可能收起再弹出
                payPwdLayout.clear();
                payPwdLayout.showKeyboardInput();
            }
        });
    }



    private void checkPwd(String inputStr) {
        Toast.makeText(this, "验证密码：" + inputStr, Toast.LENGTH_SHORT).show();
    }

    private void hideKeyboard() {
        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        if (imm != null && isSoftShowing()) {
            imm.hideSoftInputFromWindow(getWindow().getDecorView().getWindowToken(), 0);
        }
    }

    protected boolean isSoftShowing() {
        //获取当前屏幕内容的高度
        int screenHeight = getWindow().getDecorView().getHeight();
        //获取View可见区域的bottom
        Rect rect = new Rect();
        getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);

        return screenHeight - rect.bottom != 0;
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.txt_keyboard_0:
                payPwdLayout.appendText("0");
                break;
            case R.id.txt_keyboard_1:
                payPwdLayout.appendText("1");
                break;
            case R.id.txt_keyboard_2:
                payPwdLayout.appendText("2");
                break;
            case R.id.txt_keyboard_3:
                payPwdLayout.appendText("3");
                break;
            case R.id.txt_keyboard_4:
                payPwdLayout.appendText("4");
                break;
            case R.id.txt_keyboard_5:
                payPwdLayout.appendText("5");
                break;
            case R.id.txt_keyboard_6:
                payPwdLayout.appendText("6");
                break;
            case R.id.txt_keyboard_7:
                payPwdLayout.appendText("7");
                break;
            case R.id.txt_keyboard_8:
                payPwdLayout.appendText("8");
                break;
            case R.id.txt_keyboard_9:
                payPwdLayout.appendText("9");
                break;
            case R.id.txt_keyboard_del:
                payPwdLayout.delLastText();

                break;
            case R.id.txt_keyboard_clear:
                payPwdLayout.clear();
                break;
        }
    }
}

半屏弹出框：

public class PayMoneyWin extends PopupWindow implements View.OnClickListener {

    private Context mContext;

    private View view;

    private TextView btn_cancel;


    public PayMoneyWin(Context mContext, final PayPwdLayout.OnCheckPwdListener listener) {

        this.view = LayoutInflater.from(mContext).inflate(R.layout.popup_pay_pwd, null);
//        btn_take_photo = (Button) view.findViewById(R.id.btn_take_photo);
//        btn_pick_photo = (Button) view.findViewById(R.id.btn_pick_photo);
        initView();
        payPwdLayout.setOnCheckPwdListener(new PayPwdLayout.OnCheckPwdListener() {
            @Override
            public void check(String pwd) {
                if(listener!=null)
                    listener.check(pwd);
                dismiss();
            }
        });
        // 设置按钮监听
//        btn_pick_photo.setOnClickListener(itemsOnClick);
//        btn_take_photo.setOnClickListener(itemsOnClick);

        // 设置外部可点击
        this.setOutsideTouchable(true);
        // mMenuView添加OnTouchListener监听判断获取触屏位置如果在选择框外面则销毁弹出框
        this.view.setOnTouchListener(new View.OnTouchListener() {

            public boolean onTouch(View v, MotionEvent event) {

                int height = view.findViewById(R.id.pop_layout).getTop();

                int y = (int) event.getY();
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    if (y < height) {
                        dismiss();
                    }
                }
                return true;
            }
        });


    /* 设置弹出窗口特征 */
        // 设置视图
        this.setContentView(this.view);
        // 设置弹出窗体的宽和高
        this.setHeight(RelativeLayout.LayoutParams.WRAP_CONTENT);
        this.setWidth(RelativeLayout.LayoutParams.MATCH_PARENT);

        // 设置弹出窗体可点击
        this.setFocusable(true);

        // 实例化一个ColorDrawable颜色为半透明
        ColorDrawable dw = new ColorDrawable(0xb0000000);
        // 设置弹出窗体的背景
        this.setBackgroundDrawable(dw);

        // 设置弹出窗体显示时的动画，从底部向上弹出
        this.setAnimationStyle(R.style.take_photo_anim);

        setOnDismissListener(new OnDismissListener() {
            @Override
            public void onDismiss() {
                params = getActivity().getWindow().getAttributes();
                params.alpha=1f;
                getActivity().getWindow().setAttributes(params);
            }
        });

    }

    private void initView() {
        initPwdLen();
        initKeyboard();
    }

    private void initKeyboard() {
        view.findViewById(R.id.txt_keyboard_1).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_2).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_3).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_4).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_5).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_6).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_7).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_8).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_9).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_0).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_del).setOnClickListener(this);
        view.findViewById(R.id.txt_keyboard_clear).setOnClickListener(this);
    }

    private PayPwdLayout payPwdLayout;
    private void initPwdLen() {
        payPwdLayout = (PayPwdLayout) view.findViewById(R.id.linear_pwd);
        payPwdLayout.setPwdLen(6);
    }

    private WindowManager.LayoutParams params;
    public void show(View view){
        showAtLocation(view, Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0);
        params =getActivity() .getWindow().getAttributes();
        //当弹出Popupwindow时，背景变半透明
        params.alpha=0.7f;
        getActivity().getWindow().setAttributes(params);
    }

    @Override
    public void dismiss() {
        super.dismiss();

    }

    private Activity getActivity(){
        return (Activity) this.view.getContext();
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.txt_keyboard_0:
            case R.id.txt_keyboard_1:
            case R.id.txt_keyboard_2:
            case R.id.txt_keyboard_3:
            case R.id.txt_keyboard_4:
            case R.id.txt_keyboard_5:
            case R.id.txt_keyboard_6:
            case R.id.txt_keyboard_7:
            case R.id.txt_keyboard_8:
            case R.id.txt_keyboard_9:
                TextView txt = (TextView) getActivity().findViewById(v.getId());
                payPwdLayout.appendText(txt.getText().toString());
                break;
            case R.id.txt_keyboard_del:
                payPwdLayout.delLastText();

                break;
            case R.id.txt_keyboard_clear:
                payPwdLayout.clear();
                break;
        }
    }
}

弹出框布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:id="@+id/pop_layout"
    android:background="#ffffff"
    android:layout_height="wrap_content">
    <com.dyy.yonxin.library2.test.paypwd.PayPwdLayout
        android:id="@+id/linear_pwd"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:background="@drawable/bg_card"
        android:orientation="horizontal"/>

    <EditText
        android:id="@+id/edit_input"
        android:layout_width="1px"
        android:layout_height="1px"
        android:background="@null"
        android:inputType="number"/>
    <TableLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:stretchColumns="*">
        <TableRow
            >
            <TextView
                android:id="@+id/txt_keyboard_1"
                style="@style/txt_btn_function"
                android:text="1"/>

            <TextView
                android:id="@+id/txt_keyboard_2"
                style="@style/txt_btn_function"
                android:text="2"/>
            <TextView
                android:id="@+id/txt_keyboard_3"
                style="@style/txt_btn_function"
                android:text="3"/>
        </TableRow>
        <TableRow
            >
            <TextView
                android:id="@+id/txt_keyboard_4"
                style="@style/txt_btn_function"
                android:text="4"/>

            <TextView
                android:id="@+id/txt_keyboard_5"
                style="@style/txt_btn_function"
                android:text="5"/>
            <TextView
                android:id="@+id/txt_keyboard_6"
                style="@style/txt_btn_function"
                android:text="6"/>
        </TableRow>
        <TableRow
            >
            <TextView
                android:id="@+id/txt_keyboard_7"
                style="@style/txt_btn_function"
                android:text="7"/>

            <TextView
                android:id="@+id/txt_keyboard_8"
                style="@style/txt_btn_function"
                android:text="8"/>
            <TextView
                android:id="@+id/txt_keyboard_9"
                style="@style/txt_btn_function"
                android:text="9"/>
        </TableRow>

        <TableRow
            >
            <TextView
                android:id="@+id/txt_keyboard_clear"
                style="@style/txt_btn_function"
                android:background="@drawable/bg_card2"
                android:text="清空"/>
            <TextView
                android:id="@+id/txt_keyboard_0"
                style="@style/txt_btn_function"
                android:text="0"/>
            <TextView
                android:id="@+id/txt_keyboard_del"
                style="@style/txt_btn_function"
                android:background="@drawable/bg_card2"
                android:text="擦除"/>
        </TableRow>
    </TableLayout>
</LinearLayout>

Activity布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.dyy.yonxin.library2.test.paypwd.PayPwdActivity">
    <com.dyy.yonxin.library2.test.paypwd.PayPwdLayout
        android:id="@+id/linear_pwd"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:background="@drawable/bg_card"
        android:orientation="horizontal"/>

   <TableLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:stretchColumns="*">
       <TableRow
           >
           <TextView
               android:id="@+id/txt_keyboard_1"
               style="@style/txt_btn_function"
               android:text="1"/>

           <TextView
               android:id="@+id/txt_keyboard_2"
               style="@style/txt_btn_function"
               android:text="2"/>
           <TextView
               android:id="@+id/txt_keyboard_3"
               style="@style/txt_btn_function"
               android:text="3"/>
       </TableRow>
       <TableRow
           >
           <TextView
               android:id="@+id/txt_keyboard_4"
               style="@style/txt_btn_function"
               android:text="4"/>

           <TextView
               android:id="@+id/txt_keyboard_5"
               style="@style/txt_btn_function"
               android:text="5"/>
           <TextView
               android:id="@+id/txt_keyboard_6"
               style="@style/txt_btn_function"
               android:text="6"/>
       </TableRow>
       <TableRow
           >
           <TextView
               android:id="@+id/txt_keyboard_7"
               style="@style/txt_btn_function"
               android:text="7"/>

           <TextView
               android:id="@+id/txt_keyboard_8"
               style="@style/txt_btn_function"
               android:text="8"/>
           <TextView
               android:id="@+id/txt_keyboard_9"
               style="@style/txt_btn_function"
               android:text="9"/>
       </TableRow>

       <TableRow
           >
           <TextView
               android:id="@+id/txt_keyboard_clear"
               style="@style/txt_btn_function"
               android:background="@drawable/bg_card2"
               android:text="清空"/>
           <TextView
               android:id="@+id/txt_keyboard_0"
               style="@style/txt_btn_function"
               android:text="0"/>
           <TextView
               android:id="@+id/txt_keyboard_del"
               style="@style/txt_btn_function"
               android:background="@drawable/bg_card2"
               android:text="擦除"/>
       </TableRow>
       <Button
           android:id="@+id/btn_keyboard"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="弹出键盘"/>

       <Button
           android:id="@+id/btn_popup_pwd"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="弹出输入密码"/>
   </TableLayout>
</LinearLayout>

弹出框动画：

<style name="take_photo_anim" parent="android:Animation">
        <item name="android:windowEnterAnimation">@anim/pop_enter_anim</item>
        <item name="android:windowExitAnimation">@anim/pop_exit_anim</item>
    </style>

pop_enter_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:duration="200"
        android:fromYDelta="100%p"
        android:toYDelta="0" />
    <alpha
        android:duration="200"
        android:fromAlpha="0.0"
        android:toAlpha="1.0" />
</set>

pop_exit_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="200"
        android:fromYDelta="0"
        android:toYDelta="50%p" />
    <alpha
        android:duration="200"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />
</set>