本篇内容介绍了“怎么用Android自定义View实现微信支付密码输入框”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！

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本文实例为大家分享了Android实现微信支付密码输入框的具体代码，供大家参考，具体内容如下

项目中使用到了支付密码功能，其实这类界面是比较常用的，涉及支付密码的输入的一般都会用到对的，所以单独地把这部分抽取出来，有需要的朋友可以拿去用哈!

效果就是支付,弹出密码框,输入密码,这个过程密码不可见,并且提供一个输入完毕的监听!

这个弹出层呢,其实就是一个DialogFragment，逻辑封装在其内部

一.弹出层进出动画 (anim文件)

push_bottom_in.xml

push_bottom_out.xml

二.drawable资源

selector_item_pressed.xml

键盘的点击效果

shape_dialog.xml

弹出框样式

三.mipmap资源

ic_arrow_down

ic_input_del

icon_del.png

四.layout布局

fragment_pay.xml

支付弹出层布局

自定义键盘布局

五.color资源

#3F51B5 #303F9F #FF4081 #919191 #EBEBEB #f0eff5 #d5d1d1 #FFFFFF #000000 #212121

六.dimen资源

40sp 18sp 15sp 12sp 10sp 20dp 15dp 10dp 10dp 0.5dp 10dp 10dp 50dp 25dp 2px

七.styles样式

八.输入键盘view

public class PassWordInputView extends LinearLayout implements View.OnClickListener { private InputReceiver inputReceiver; public PassWordInputView(Context context, @Nullable AttributeSet attrs) { super(context, attrs); LayoutInflater.from(context).inflate(R.layout.view_password_input, this); initView(); } private void initView() { findViewById(R.id.btn_1).setOnClickListener(this); findViewById(R.id.btn_2).setOnClickListener(this); findViewById(R.id.btn_3).setOnClickListener(this); findViewById(R.id.btn_4).setOnClickListener(this); findViewById(R.id.btn_5).setOnClickListener(this); findViewById(R.id.btn_6).setOnClickListener(this); findViewById(R.id.btn_7).setOnClickListener(this); findViewById(R.id.btn_8).setOnClickListener(this); findViewById(R.id.btn_9).setOnClickListener(this); findViewById(R.id.btn_0).setOnClickListener(this); findViewById(R.id.btn_del).setOnClickListener(this); findViewById(R.id.layout_hide).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { setVisibility(GONE); } }); } @Override public void onClick(View v) { String num = (String) v.getTag(); this.inputReceiver.receive(num); } /** * 设置接收器 * * @param receiver */ public void setInputReceiver(InputReceiver receiver) { this.inputReceiver = receiver; } /** * 输入接收器 */ public interface InputReceiver { void receive(String num); }}

九.密码框view

public class PayPassWordView extends View { private ArrayList result;//输入结果保存 private int count;//密码位数 private int size;//默认每一格的大小 private Paint mBorderPaint;//边界画笔 private Paint mDotPaint;//掩盖点的画笔 private int mBorderColor;//边界颜色 private int mDotColor;//掩盖点的颜色 private RectF mRoundRect;//外面的圆角矩形 private int mRoundRadius;//圆角矩形的圆角程度 public PayPassWordView(Context context) { super(context); init(null);//初始化 } private InputCallBack inputCallBack;//输入完成的回调 private PassWordInputView inputMethodView; //输入键盘 public interface InputCallBack { void onInputFinish(String result); } public PayPassWordView(Context context, AttributeSet attrs) { super(context, attrs); init(attrs); } public PayPassWordView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(attrs); } /** * 初始化相关参数 */ void init(AttributeSet attrs) { final float dp = getResources().getDisplayMetrics().density; this.setFocusable(true); this.setFocusableInTouchMode(true); result = new ArrayList<>(); if (attrs != null) { TypedArray ta = getContext().obtainStyledAttributes(attrs, R.styleable.PayPassWordView); mBorderColor = ta.getColor(R.styleable.PayPassWordView_border_color, Color.LTGRAY); mDotColor = ta.getColor(R.styleable.PayPassWordView_dot_color, Color.BLACK); count = ta.getInt(R.styleable.PayPassWordView_count, 6); ta.recycle(); } else { mBorderColor = Color.LTGRAY; mDotColor = Color.GRAY; count = 6;//默认6位密码 } size = (int) (dp * 30);//默认30dp一格 //color mBorderPaint = new Paint(Paint.ANTI_ALIAS_FLAG); mBorderPaint.setStrokeWidth(3); mBorderPaint.setStyle(Paint.Style.STROKE); mBorderPaint.setColor(mBorderColor); mDotPaint = new Paint(Paint.ANTI_ALIAS_FLAG); mDotPaint.setStrokeWidth(3); mDotPaint.setStyle(Paint.Style.FILL); mDotPaint.setColor(mDotColor); mRoundRect = new RectF(); mRoundRadius = (int) (5 * dp); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int w = measureWidth(widthMeasureSpec); int h = measureHeight(heightMeasureSpec); int wsize = MeasureSpec.getSize(widthMeasureSpec); int hsize = MeasureSpec.getSize(heightMeasureSpec); //宽度没指定,但高度指定 if (w == -1) { if (h != -1) { w = h * count;//宽度=高*数量 size = h; } else {//两个都不知道,默认宽高 w = size * count; h = size; } } else {//宽度已知 if (h == -1) {//高度不知道 h = w / count; size = h; } } setMeasuredDimension(Math.min(w, wsize), Math.min(h, hsize)); } private int measureWidth(int widthMeasureSpec) { //宽度 int wmode = MeasureSpec.getMode(widthMeasureSpec); int wsize = MeasureSpec.getSize(widthMeasureSpec); if (wmode == MeasureSpec.AT_MOST) {//wrap_content return -1; } return wsize; } private int measureHeight(int heightMeasureSpec) { //高度 int hmode = MeasureSpec.getMode(heightMeasureSpec); int hsize = MeasureSpec.getSize(heightMeasureSpec); if (hmode == MeasureSpec.AT_MOST) {//wrap_content return -1; } return hsize; } @Override public boolean onTouchEvent(MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN) {//点击控件弹出输入键盘 requestFocus(); inputMethodView.setVisibility(VISIBLE); return true; } return true; } @Override protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) { super.onFocusChanged(gainFocus, direction, previouslyFocusedRect); if (gainFocus) { inputMethodView.setVisibility(VISIBLE); } else { inputMethodView.setVisibility(GONE); } } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); final int width = getWidth() - 2; final int height = getHeight() - 2; //先画个圆角矩形 mRoundRect.set(0, 0, width, height); canvas.drawRoundRect(mRoundRect, 0, 0, mBorderPaint); //画分割线 for (int i = 1; i < count; i++) { final int x = i * size; canvas.drawLine(x, 0, x, height, mBorderPaint); } //画掩盖点, // 这是前面定义的变量 private ArrayList result;//输入结果保存 int dotRadius = size / 8;//圆圈占格子的三分之一 for (int i = 0; i < result.size(); i++) { final float x = (float) (size * (i + 0.5)); final float y = size / 2; canvas.drawCircle(x, y, dotRadius, mDotPaint); } } @Override public boolean onCheckIsTextEditor() { return true; } @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) { outAttrs.inputType = InputType.TYPE_CLASS_NUMBER;//输入类型为数字 outAttrs.imeOptions = EditorInfo.IME_ACTION_DONE; return new MyInputConnection(this, false); } public void setInputCallBack(InputCallBack inputCallBack) { this.inputCallBack = inputCallBack; } public void clearResult() { result.clear(); invalidate(); } private class MyInputConnection extends BaseInputConnection { public MyInputConnection(View targetView, boolean fullEditor) { super(targetView, fullEditor); } @Override public boolean commitText(CharSequence text, int newCursorPosition) { //这里是接受输入法的文本的，我们只处理数字，所以什么操作都不做 return super.commitText(text, newCursorPosition); } @Override public boolean deleteSurroundingText(int beforeLength, int afterLength) { //软键盘的删除键 DEL 无法直接监听，自己发送del事件 if (beforeLength == 1 && afterLength == 0) { return super.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL))  && super.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL)); } return super.deleteSurroundingText(beforeLength, afterLength); } } /** * 设置输入键盘view * * @param inputMethodView */ public void setInputMethodView(PassWordInputView inputMethodView) { this.inputMethodView = inputMethodView; this.inputMethodView.setInputReceiver(new PassWordInputView.InputReceiver() { @Override public void receive(String num) { if (num.equals("-1")) {  if (!result.isEmpty()) {  result.remove(result.size() - 1);  invalidate();  } } else {  if (result.size() < count) {  result.add(num);  invalidate();  ensureFinishInput();  } } } }); } /** * 判断是否输入完成，输入完成后调用callback */ void ensureFinishInput() { if (result.size() == count && inputCallBack != null) {//输入完成 StringBuffer sb = new StringBuffer(); for (String i : result) { sb.append(i); } inputCallBack.onInputFinish(sb.toString()); } } /** * 获取输入文字 * * @return */ public String getInputText() { if (result.size() == count) { StringBuffer sb = new StringBuffer(); for (String i : result) { sb.append(i); } return sb.toString(); } return null; }}

十.支付弹出层

public class PayFragment extends DialogFragment implements View.OnClickListener { public static final String EXTRA_CONTENT = "extra_content"; //提示框内容 public static final String EXTRA_CONTENT2 = "extra_content2"; //提示框内容 public static final String EXTRA_CONTENT3 = "extra_content3"; //提示框内容 private PayPassWordView psw_input; private PayPassWordView.InputCallBack inputCallBack; @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { // 使用不带Theme的构造器, 获得的dialog边框距离屏幕仍有几毫米的缝隙。 Dialog dialog = new Dialog(getActivity(), R.style.BottomDialog); dialog.requestWindowFeature(Window.FEATURE_NO_TITLE); // 设置Content前设定 dialog.setContentView(R.layout.fragment_pay); dialog.setCanceledOnTouchOutside(true); //外部点击取消 // 设置宽度为屏宽, 靠近屏幕底部。 final Window window = dialog.getWindow(); window.setWindowAnimations(R.style.AnimBottom); window.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); final WindowManager.LayoutParams lp = window.getAttributes(); lp.width = WindowManager.LayoutParams.MATCH_PARENT; // 宽度持平 lp.gravity = Gravity.TOP; window.setAttributes(lp); initView(dialog); return dialog; } private void initView(Dialog dialog) { Bundle bundle = getArguments(); if (bundle != null) { TextView tv_content = (TextView) dialog.findViewById(R.id.tv_content); TextView tv_content2 = (TextView) dialog.findViewById(R.id.tv_content2); TextView tv_content3 = (TextView) dialog.findViewById(R.id.tv_content3); tv_content.setText(bundle.getString(EXTRA_CONTENT)); tv_content2.setText(bundle.getString(EXTRA_CONTENT2)); tv_content3.setText(bundle.getString(EXTRA_CONTENT3)); } psw_input = (PayPassWordView) dialog.findViewById(R.id.payPwdView); PassWordInputView inputMethodView = (PassWordInputView) dialog.findViewById(R.id.inputMethodView); psw_input.setInputMethodView(inputMethodView); psw_input.setInputCallBack(inputCallBack); dialog.findViewById(R.id.iv_close).setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.iv_close: dismiss(); break; } } /** * 设置输入回调 * * @param inputCallBack */ public void setPaySuccessCallBack(PayPassWordView.InputCallBack inputCallBack) { this.inputCallBack = inputCallBack; }}

十一.逻辑代码中直接引用

public class MainActivity extends AppCompatActivity implements PayPassWordView.InputCallBack, View.OnClickListener { private PayFragment fragment; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findViewById(R.id.btn_pay).setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.btn_pay: Bundle bundle = new Bundle(); bundle.putString(PayFragment.EXTRA_CONTENT, "提现"); bundle.putString(PayFragment.EXTRA_CONTENT2, "¥" + 1.00); bundle.putString(PayFragment.EXTRA_CONTENT3, "额外扣除0.1手续费"); fragment = new PayFragment();//创建支付弹出框实例 fragment.setArguments(bundle);//传递信息 fragment.setPaySuccessCallBack(MainActivity.this);//设置回调 fragment.show(getSupportFragmentManager(), "Pay"); break; } } @Override public void onInputFinish(String result) { Toast.makeText(this, result, Toast.LENGTH_SHORT).show(); fragment.dismiss();//窗口消失 }}

什么都没有，只有一个点击事件而已.

“怎么用Android自定义View实现微信支付密码输入框”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注创新互联网站，小编将为大家输出更多高质量的实用文章！

文章题目：怎么用Android自定义View实现微信支付密码输入框
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