Android数字动态显示，仿支付宝app效果简单的实现。字数从0-x！！！

今天看到了，支付宝app里面的数字从0到X感觉相当的不错，网上搜了下好像没有这方面的介绍，自己想了想做了个简单的实现。

先上程序截图：





代码：自定义控件布局：activity_number.xml

[html] view
plain copy







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

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

<com.example.android_ui.widget.AutoNumber

android:id="@+id/num"

android:layout_width="150dip"

android:layout_height="wrap_content"

android:layout_margin="20dip"

android:background="@android:color/transparent"

android:gravity="center"

android:singleLine="true"

android:text="0" />

<EditText

android:id="@+id/editText"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:numeric="decimal" />

<Button

android:id="@+id/btn01"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="输入"/>

</LinearLayout>

自定义控件：AutoNumber

[java] view
plain copy







package com.example.android_ui.widget;

import java.text.NumberFormat;

import android.content.Context;

import android.os.Handler;

import android.util.AttributeSet;

import android.widget.TextView;

/**

* 数字显示0-X

*

* @author Sanpark

*

*/

public class AutoNumber extends TextView {

private Handler handler;

Runnable r = null;

double oldnum;

double newnum;

double startnum = 0;

public AutoNumber(Context context, Handler handler) {

super(context);

}

public AutoNumber(Context context, AttributeSet attrs, int defStyle) {

super(context, attrs, defStyle);

}

public AutoNumber(Context context, AttributeSet attrs) {

super(context, attrs);

}

@Override

public CharSequence getText() {

// TODO Auto-generated method stub

return super.getText();

}

public void setText(CharSequence text, BufferType type, Handler myHandler) {

handler = myHandler;

oldnum = 0.00;

newnum = Double.valueOf(text.toString());

// 转化国际化数字显示

// 若想在数字前面在上￥符号 ，将getIntegerInstance()方法改为getCurrencyInstance () 方法

final NumberFormat af = NumberFormat.getIntegerInstance();

// 设置精确到小数点后两位

af.setMinimumFractionDigits(2);

r = new Runnable() {

@Override

public void run() {

// 设置每次添加的度量

oldnum += newnum / 30;

if (startnum < newnum) {

if (oldnum > newnum)

oldnum = newnum;

setText(af.format(oldnum));

handler.postDelayed(r, 50);

} else if (oldnum == newnum) {

setText(af.format(oldnum));

}

}

};

handler.postDelayed(r, 50);

}

}

最后测试Activity：NumberTextViewActivity

[java] view
plain copy







package com.example.android_ui;

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import com.example.android_ui.widget.AutoNumber;

/**

* 测试界面

*

* @author Sanpark

*

*/

public class NumberTextViewActivity extends Activity {

private AutoNumber numText;

private EditText edit;

private Button btn01;

Handler handler;

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_number);

numText = (AutoNumber) findViewById(R.id.num);

edit = (EditText) findViewById(R.id.editText);

btn01 = (Button) findViewById(R.id.btn01);

handler = new Handler();

btn01.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

numText.setText(edit.getText().toString(),

TextView.BufferType.NORMAL, handler);

}

});

}

}

到此就完工了，有兴趣的去试试吧。

转载注明出处：http://blog.csdn.net/just_sanpark/article/details/17920369