近期由于项目中很多EditText控件都是输入纯数字，不停的弹出和关闭系统自带的键盘体验很差，所以决定做一款悬浮在EditText控件旁边的数字小键盘。
当用户点击EditText控件的时候会弹出数字键盘，用户输入完成之后点击确定会把输入的内容显示在EditText中，这样就避免了弹出系统键盘这种不友好的体验
先上效果图
这个demo是利用WindowManager实现的，本来想用Popupwindow的，发现限制太大，决定用WindowManager实现，但是也有个缺陷，不好控制键盘的位置，可能是我现学现用，理解的不是很全面，知道更好方法的朋友可以交流
上代码
先创建一个自定义键盘控件
import android.content.Context;
import android.text.InputType;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class DigitPasswordKeyPad extends View {
private Context ctx = null;
private View v;
private String digitnum = "";
private int length = 20;
private Button digitkeypad_1;
private Button digitkeypad_2;
private Button digitkeypad_3;
private Button digitkeypad_4;
private Button digitkeypad_5;
private Button digitkeypad_6;
private Button digitkeypad_7;
private Button digitkeypad_8;
private Button digitkeypad_9;
private Button digitkeypad_0;
private Button digitkeypad_c;
private Button digitkeypad_ok;
private Button digitkeypad_point;
private EditText digitkeypad_edittext;
private boolean isPwd;
public DigitPasswordKeyPad(Context ctx) {
super(ctx);
this.ctx = ctx;
}
@Override
protected void onLayout(boolean arg0, int arg1, int arg2, int arg3, int arg4) {
}
public void setEditTextIsPwd(boolean ispwd) {
if (ispwd) {
digitkeypad_edittext.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
} else {
digitkeypad_edittext.setInputType(InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
}
this.isPwd = ispwd;
}
public View setup() {
LayoutInflater lif = LayoutInflater.from(ctx);
v = lif.inflate(R.layout.activity_digit_input_number, null);
// 初始化 对象
digitkeypad_1 = (Button) v.findViewById(R.id.digitkeypad_1);
digitkeypad_2 = (Button) v.findViewById(R.id.digitkeypad_2);
digitkeypad_3 = (Button) v.findViewById(R.id.digitkeypad_3);
digitkeypad_4 = (Button) v.findViewById(R.id.digitkeypad_4);
digitkeypad_5 = (Button) v.findViewById(R.id.digitkeypad_5);
digitkeypad_6 = (Button) v.findViewById(R.id.digitkeypad_6);
digitkeypad_7 = (Button) v.findViewById(R.id.digitkeypad_7);
digitkeypad_8 = (Button) v.findViewById(R.id.digitkeypad_8);
digitkeypad_9 = (Button) v.findViewById(R.id.digitkeypad_9);
digitkeypad_0 = (Button) v.findViewById(R.id.digitkeypad_0);
digitkeypad_point = (Button) v.findViewById(R.id.digitkeypad_point);
digitkeypad_c = (Button) v.findViewById(R.id.digitkeypad_c);
digitkeypad_ok = (Button) v.findViewById(R.id.digitkeypad_ok);
digitkeypad_edittext = (EditText) v.findViewById(R.id.digitpadedittext);
// 添加点击事件
DigitPasswordKeypadOnClickListener dkol = new DigitPasswordKeypadOnClickListener();
digitkeypad_1.setOnClickListener(dkol);
digitkeypad_2.setOnClickListener(dkol);
digitkeypad_3.setOnClickListener(dkol);
digitkeypad_4.setOnClickListener(dkol);
digitkeypad_5.setOnClickListener(dkol);
digitkeypad_6.setOnClickListener(dkol);
digitkeypad_7.setOnClickListener(dkol);
digitkeypad_8.setOnClickListener(dkol);
digitkeypad_9.setOnClickListener(dkol);
digitkeypad_0.setOnClickListener(dkol);
digitkeypad_point.setOnClickListener(dkol);
digitkeypad_c.setOnClickListener(dkol);
digitkeypad_ok.setOnClickListener(new DigitPasswordKeypadFinshOnClikcListener());
return v;
}
private class DigitPasswordKeypadFinshOnClikcListener implements OnClickListener {
@Override
public void onClick(View view) {
int viewId = view.getId();
if (viewId == R.id.digitkeypad_ok) {
// 点击完成
// 设置值回页面
// 隐藏自己View
// if (isPwd) {
// jsimpl.hidePasswdPad(digitkeypad_edittext.getText().toString());
// } else {
// jsimpl.hideCallNumPad(digitkeypad_edittext.getText().toString());
// }
Log.i("aaaaaaaaaaaaaa", "bbbbbbbbbbbb");
// v.setVisibility(View.GONE);
}
}
}
public void initInputLable(String str, int length) {
str = str.trim();
digitnum = str;
this.length = length;
digitkeypad_edittext.setText(digitnum);
digitkeypad_edittext.setSelection(digitnum.length());
}
private class DigitPasswordKeypadOnClickListener implements OnClickListener {
@Override
public void onClick(View v) {
int viewId = v.getId();
switch (viewId) {
case R.id.digitkeypad_1:
if (digitnum.length() == length) {
return;
} else {
digitnum += 1;
}
break;
case R.id.digitkeypad_2:
if (digitnum.length() == length) {
return;
} else {
digitnum += 2;
}
break;
case R.id.digitkeypad_3:
if (digitnum.length() == length) {
return;
} else {
digitnum += 3;
}
break;
case R.id.digitkeypad_4:
if (digitnum.length() == length) {
return;
} else {
digitnum += 4;
}
break;
case R.id.digitkeypad_5:
if (digitnum.length() == length) {
return;
} else {
digitnum += 5;
}
break;
case R.id.digitkeypad_6:
if (digitnum.length() == length) {
return;
} else {
digitnum += 6;
}
break;
case R.id.digitkeypad_7:
if (digitnum.length() == length) {
return;
} else {
digitnum += 7;
}
break;
case R.id.digitkeypad_8:
if (digitnum.length() == length) {
return;
} else {
digitnum += 8;
}
break;
case R.id.digitkeypad_9:
if (digitnum.length() == length) {
return;
} else {
digitnum += 9;
}
break;
case R.id.digitkeypad_0:
if (digitnum.length() == length) {
return;
} else {
digitnum += 0;
}
break;
case R.id.digitkeypad_point:
if (digitnum.length() == length) {
return;
} else {
digitnum += ".";
}
break;
case R.id.digitkeypad_c:// 后退
if (digitnum.length() > 0) {
digitnum = digitnum.substring(0, digitnum.length() - 1);
}
break;
}
// 格式化 数据
digitkeypad_edittext.setText(digitnum);
digitkeypad_edittext.setSelection(null != digitnum ? digitnum.length() : 0);
}
}
}
然后用WindowManager或者PopupWindow初始化这个组件，这里两种方法都给出了
import android.content.Context;
import android.graphics.PixelFormat;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.Button;
import android.widget.EditText;
public class DigitKeyPadUtil {
public static void showPassWdPadView(final EditText tv, final Context context,
final View digitView) {
// 让一个视图浮动在你的应用程序之上
final WindowManager windowmanager = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
LayoutParams layoutparams = new LayoutParams(400, 550,
WindowManager.LayoutParams.FIRST_SUB_WINDOW,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.RGBA_8888);
layoutparams.gravity = Gravity.LEFT;
layoutparams.x = 200;
layoutparams.y = 500;
Button btn = (Button) digitView
.findViewById(R.id.digitkeypad_ok);
final EditText digitkeypad_edittext = (EditText) digitView
.findViewById(R.id.digitpadedittext);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
String str = digitkeypad_edittext.getText().toString();
tv.setText(str);
if (digitView.getParent() != null) {
windowmanager.removeView(digitView);
}
}
});
if (digitView.getParent() == null) {
windowmanager.addView(digitView, layoutparams);
}
// LayoutInflater mLayoutInflater = (LayoutInflater)
// getSystemService(LAYOUT_INFLATER_SERVICE);
// 自定义布局
// final PopupWindow mPop = new PopupWindow(passwdview,
// LayoutParams.WRAP_CONTENT,
// LayoutParams.WRAP_CONTENT, true);
// mPop.setContentView(passwdview);//设置包含视图
// mPop.setWidth(300);
// mPop.setHeight(400);//设置弹出框大小
// mPop.setOutsideTouchable(false);
// mPop.showAsDropDown(editText);
//
// Button btn = (Button)
// passwdview.findViewById(R.id.digitkeypad_ok);
// final EditText digitkeypad_edittext = (EditText)
// passwdview.findViewById(R.id.digitpadedittext);
// btn.setOnClickListener(new OnClickListener() {
//
// @Override
// public void onClick(View arg0) {
// String str = digitkeypad_edittext.getText().toString();
// editText.setText(str);
// mPop.dismiss();
// }
// });
}
}
在activity中很简单，只需要给需要弹出数字键盘的组件设置事件就行
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.TextView;
public class AndroidInputNumberActivity extends Activity {
private DigitPasswordKeyPad dpk;
private View digitView;
private Context content ;
EditText editText;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
content = this;
dpk = new DigitPasswordKeyPad(this);
digitView = dpk.setup();
editText = (EditText)findViewById(R.id.input);
editText.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
DigitKeyPadUtil.showPassWdPadView((EditText)v,content,digitView);
}
});
}
}
activity_digit_input_number.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/digitkeypadrootlayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:orientation="horizontal" >
<EditText
android:id="@+id/digitpadedittext"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:inputType="text"
android:editable="false"
android:gravity="center_vertical|right"
android:singleLine="true" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="@+id/digitkeypad_1"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:gravity="center"
android:text="@string/digitKeyppad_one"
android:textSize="22sp" >
</Button>
<Button
android:id="@+id/digitkeypad_2"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:gravity="center"
android:text="@string/digitKeyppad_two"
android:textSize="22sp" >
</Button>
<Button
android:id="@+id/digitkeypad_3"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:gravity="center"
android:text="@string/digitKeyppad_three"
android:textSize="22sp" >
</Button>
<Button
android:id="@+id/digitkeypad_4"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:text="@string/digitKeyppad_four"
android:textSize="22sp" >
</Button>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:orientation="horizontal" >
<Button
android:id="@+id/digitkeypad_5"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:text="@string/digitKeyppad_five"
android:textSize="22sp" >
</Button>
<Button
android:id="@+id/digitkeypad_6"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:text="@string/digitKeyppad_six"
android:textSize="22sp" >
</Button>
<Button
android:id="@+id/digitkeypad_7"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:text="@string/digitKeyppad_seven"
android:textSize="22sp" >
</Button>
<Button
android:id="@+id/digitkeypad_8"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:text="@string/digitKeyppad_eight"
android:textSize="22sp" >
</Button>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:orientation="horizontal" >
<Button
android:id="@+id/digitkeypad_9"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:text="@string/digitKeyppad_nine"
android:textSize="22sp" >
</Button>
<Button
android:id="@+id/digitkeypad_0"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:text="@string/digitKeyppad_zero"
android:textSize="22sp" >
</Button>
<Button
android:id="@+id/digitkeypad_point"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:text="@string/digitKeyppad_point"
android:textSize="22sp" >
</Button>
<Button
android:id="@+id/digitkeypad_c"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_weight="1"
android:text="@string/digitKeyppad_delete"
android:textSize="22sp" >
</Button>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:orientation="horizontal"
android:gravity="center"
>
<Button
android:id="@+id/digitkeypad_ok"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="@string/digitKeyppad_ok"
android:textSize="22sp" >
</Button>
</LinearLayout>
</LinearLayout>
最后别忘了在配置文件中加入权限
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
这样就可以了，后续想维护加入拖动什么的都很方便
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