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android-使用PopupWindow实现随机排列的自定义密码键盘

young_d807 2022-02-03 阅读 92

String str = randomKeys[6]+"";

editable.insert(index, str);

}

});

btn7.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

int index = editText.getSelectionStart();

String str = randomKeys[7]+"";

editable.insert(index, str);

}

});

btn8.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

int index = editText.getSelectionStart();

String str = randomKeys[8]+"";

editable.insert(index, str);

}

});

btn9.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

int index = editText.getSelectionStart();

String str = randomKeys[9]+"";

editable.insert(index, str);

}

});

btn_del.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

try {

int index = editText.getSelectionStart();

editable.delete(index - 1, index);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

});

btn_clear.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

editable.clear();

}

});

btn_conf.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

popupWindow.dismiss();

button.requestFocus();

}

});

// 禁止EditText获得焦点后弹出系统键盘

editText.setInputType(InputType.TYPE_NULL);

editText.setOnFocusChangeListener(new OnFocusChangeListener() {

@Override

public void onFocusChange(View arg0, boolean arg1) {

// TODO Auto-generated method stub

if (arg1) {

updateKeyBoard();

popupWindow.showAsDropDown(editText, 0, 0);

popupWindow.update();

}

}

});

}

private void updateKeyBoard() {

randomKeys = getRandomNum();

btn0.setText(randomKeys[0] + “”);

btn1.setText(randomKeys[1] + “”);

btn2.setText(randomKeys[2] + “”);

btn3.setText(randomKeys[3] + “”);

btn4.setText(randomKeys[4] + “”);

btn5.setText(randomKeys[5] + “”);

btn6.setText(randomKeys[6] + “”);

btn7.setText(randomKeys[7] + “”);

btn8.setText(randomKeys[8] + “”);

btn9.setText(randomKeys[9] + “”);

}

//生成随机的0-9 10个数字,且值各不相同

private int[] getRandomNum() {

Random random = new Random();

int[] data = new int[10];

boolean b;

boolean b2 = false;

boolean b3 = true;

int x;

for (int i = 0; i < 10; i++) {

b = true;

while (b) {

x = random.nextInt(10);

if (x == 0 && b3) {

b3 = false;

b = false;

}

for (int y : data) {

if (x == y) {

b2 = false;

break;

} else {

b2 = true;

}

}

if (b2) {

data[i] = x;

b = false;

break;

}

}

}

return data;

}

keyboard_bg_big.xml

<?xml version="1.0" encoding="utf-8"?>

<item

android:state_pressed=“true”

android:drawable="@drawable/key11"/>

<item

android:state_focused=“true”

android:drawable="@drawable/key12"/>

<item

android:state_focused=“false”

android:state_pressed=“false”

android:drawable="@drawable/keyboard_key_style" />

keyboard_bg_small.xml

<?xml version="1.0" encoding="utf-8"?>

<item

android:state_pressed=“true”

android:drawable="@drawable/key11"/>

<item

android:state_focused=“true”

android:drawable="@drawable/key12"/>

<item

android:state_focused=“false”

android:state_pressed=“false”

android:drawable="@drawable/keyboard_key_style" />

keyboard_bg_style.xml

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android=“http://schemas.android.com/apk/res/android”

android:shape=“rectangle” >

<gradient

android:angle=“90.0”

android:endColor="#ffffff"

android:startColor="#ffffff" />

<corners

android:bottomLeftRadius=“6.0dip”

android:bottomRightRadius=“6.0dip”

android:topLeftRadius=“6.0dip”

android:topRightRadius=“6.0dip” />

keyboard_key_style.xml

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android=“http://schemas.android.com/apk/res/android”

android:shape=“rectangle” >

<size

android:height=“36.0dip”

android:width=“80.0dip” />

<gradient

android:angle=“90.0”

android:endColor="#D7D7D7"

android:startColor="#D7D7D7" />

<corners

android:bottomLeftRadius=“6.0dip”

android:bottomRightRadius=“6.0dip”

android:topLeftRadius=“6.0dip”

android:topRightRadius=“6.0dip” />

random_keyboard.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android=“http://schemas.android.com/apk/res/android”

android:layout_width=“match_parent”

android:layout_height=“match_parent”

android:background="@drawable/keyboard_bg_style"

android:orientation=“vertical” >

<LinearLayout

android:layout_width=“match_parent”

android:layout_height=“wrap_content”

android:layout_marginLeft=“3dp”

android:layout_marginRight=“3dp”

android:layout_marginTop=“3dp”

android:orientation=“horizontal” >

<Button

android:id="@+id/keyboard_btn1"

android:layout_width=“fill_parent”

android:layout_height=“55dp”

android:layout_weight=“1”

android:background="@drawable/keyboard_bg_small"

android:gravity=“center_horizontal|center_vertical”

android:text=“1”

android:textSize=“20dp” />

<Button

android:id="@+id/keyboard_btn2"

android:layout_width=“fill_parent”

android:layout_height=“55dp”

android:layout_marginLeft=“3dp”

android:layout_weight=“1”

android:background="@drawable/keyboard_bg_small"

android:gravity=“center_horizontal|center_vertical”

android:text=“2”

android:textSize=“20dp” />

<Button

android:id="@+id/keyboard_btn3"

android:layout_width=“fill_parent”

android:layout_height=“55dp”

android:layout_marginLeft=“3dp”

android:layout_weight=“1”

android:background="@drawable/keyboard_bg_small"

android:gravity=“center_horizontal|center_vertical”

android:text=“3”

android:textSize=“20dp” />

<Button

android:id="@+id/keyboard_btn9"

android:layout_width=“fill_parent”

android:layout_height=“55dp”

android:layout_marginLeft=“3dp”

android:layout_weight=“1”

android:background="@drawable/keyboard_bg_small"

android:gravity=“center_horizontal|center_vertical”

android:text="."

android:textSize=“20dp” />

<LinearLayout

android:layout_width=“match_parent”

android:layout_height=“wrap_content”

android:layout_marginLeft=“3dp”

android:layout_marginRight=“3dp”

android:layout_marginTop=“3dp”

android:orientation=“horizontal” >

<Button

android:id="@+id/keyboard_btn4"

android:layout_width=“fill_parent”

android:layout_height=“55dp”

android:layout_weight=“1”

题外话

不管怎么样,不论是什么样的大小面试,要想不被面试官虐的不要不要的,只有刷爆面试题题做好全面的准备,当然除了这个还需要在平时把自己的基础打扎实,这样不论面试官怎么样一个知识点里往死里凿,你也能应付如流啊

欢迎评论区讨论。

yout_height=“wrap_content”

android:layout_marginLeft=“3dp”

android:layout_marginRight=“3dp”

android:layout_marginTop=“3dp”

android:orientation=“horizontal” >

<Button

android:id="@+id/keyboard_btn4"

android:layout_width=“fill_parent”

android:layout_height=“55dp”

android:layout_weight=“1”

题外话

不管怎么样,不论是什么样的大小面试,要想不被面试官虐的不要不要的,只有刷爆面试题题做好全面的准备,当然除了这个还需要在平时把自己的基础打扎实,这样不论面试官怎么样一个知识点里往死里凿,你也能应付如流啊

[外链图片转存中…(img-C55ckR7g-1643872050856)]

欢迎评论区讨论。

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