效果圖：
MainActivity.java
View keyboardView = LayoutInflater.from(this).inflate(
R.layout.random_keyboard, null);
Display display = getWindowManager().getDefaultDisplay();
int height = (int) getResources().getDimension(R.dimen.height);
popupWindow = new PopupWindow(keyboardView, display.getWidth(),
height * 4, false);
btn0 = (Button) keyboardView.findViewById(R.id.keyboard_btn0);
btn1 = (Button) keyboardView.findViewById(R.id.keyboard_btn1);
btn2 = (Button) keyboardView.findViewById(R.id.keyboard_btn2);
btn3 = (Button) keyboardView.findViewById(R.id.keyboard_btn3);
btn4 = (Button) keyboardView.findViewById(R.id.keyboard_btn4);
btn5 = (Button) keyboardView.findViewById(R.id.keyboard_btn5);
btn6 = (Button) keyboardView.findViewById(R.id.keyboard_btn6);
btn7 = (Button) keyboardView.findViewById(R.id.keyboard_btn7);
btn8 = (Button) keyboardView.findViewById(R.id.keyboard_btn8);
btn9 = (Button) keyboardView.findViewById(R.id.keyboard_btn9);
btn_del = (Button) keyboardView.findViewById(R.id.keyboard_btn_del);
btn_clear = (Button) keyboardView.findViewById(R.id.keyboard_btn_clear);
btn_conf = (Button) keyboardView.findViewById(R.id.keyboard_btn_conf);
btn0.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
int index = editText.getSelectionStart();
String str = randomKeys[0]+"";
editable.insert(index, str);
}
});
btn1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
int index = editText.getSelectionStart();
String str = randomKeys[1]+"";
editable.insert(index, str);
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
int index = editText.getSelectionStart();
String str = randomKeys[2]+"";
editable.insert(index, str);
}
});
btn3.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
int index = editText.getSelectionStart();
String str = randomKeys[3]+"";
editable.insert(index, str);
}
});
btn4.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
int index = editText.getSelectionStart();
String str = randomKeys[4]+"";
editable.insert(index, str);
}
});
btn5.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
int index = editText.getSelectionStart();
String str = randomKeys[5]+"";
editable.insert(index, str);
}
});
btn6.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
int index = editText.getSelectionStart();
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獲得焦點后彈出系統鍵盤
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] + "");
}
//生成隨機的0-9 10個數字，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"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<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" />
</selector>
keyboard_bg_small.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<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" />
</selector>
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" />
</shape>
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" />
</shape>
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>
<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"
android:background="@drawable/keyboard_bg_small"
android:gravity="center_horizontal|center_vertical"
android:text="4"
android:textSize="20dp" />
<Button
android:id="@+id/keyboard_btn5"
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="5"
android:textSize="20dp" />
<Button
android:id="@+id/keyboard_btn6"
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="6"
android:textSize="20dp" />
<Button
android:id="@+id/keyboard_btn0"
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="0"
android:textSize="20dp" />
</LinearLayout>
<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_btn7"
android:layout_width="fill_parent"
android:layout_height="55dp"
android:layout_weight="3"
android:background="@drawable/keyboard_bg_small"
android:gravity="center_horizontal|center_vertical"
android:text="7"
android:textSize="20dp" />
<Button
android:id="@+id/keyboard_btn8"
android:layout_width="fill_parent"
android:layout_height="55dp"
android:layout_marginLeft="3dp"
android:layout_weight="3"
android:background="@drawable/keyboard_bg_small"
android:gravity="center_horizontal|center_vertical"
android:text="8"
android:textSize="20dp" />
<Button
android:id="@+id/keyboard_btn_del"
android:layout_width="fill_parent"
android:layout_height="55dp"
android:layout_marginLeft="3dp"
android:layout_weight="2"
android:background="@drawable/keyboard_bg_small"
android:gravity="center_horizontal|center_vertical"
android:text="刪除"
android:textSize="20dp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="3dp"
android:layout_marginLeft="3dp"
android:layout_marginRight="3dp"
android:layout_marginTop="3dp"
android:orientation="horizontal" >
<Button
android:id="@+id/keyboard_btn_clear"
android:layout_width="fill_parent"
android:layout_height="55dp"
android:layout_weight="1"
android:background="@drawable/keyboard_bg_big"
android:gravity="center_horizontal|center_vertical"
android:text="清空"
android:textSize="20dp" />
<Button
android:id="@+id/keyboard_btn_conf"
android:layout_width="fill_parent"
android:layout_height="55dp"
android:layout_marginLeft="3dp"
android:layout_weight="1"
android:background="@drawable/keyboard_bg_big"
android:gravity="center_horizontal|center_vertical"
android:text="確定"
android:textSize="20dp" />
</LinearLayout>
</LinearLayout>
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