Android个人所得税计算器

本人所做的android个人所得税计算器程序。

先贴效果图：

1.layout布局主要使用TableLayout，代码如下

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TableLayout
	android:id="@+id/tlItems"
	android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
	>
	<TableRow>
		<TextView android:text="税前月入:"/>
		<EditText android:id="@+id/etShuiqianNum"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content"
			android:inputType="numberDecimal"
			android:layout_weight="1"
			android:hint="请输入"
			android:textColor="#FF00FF"
			android:text=""/>
		<TextView android:text="税后月入 :" android:textColor="#00FF00"/>
		<EditText android:id="@+id/etShuihouNum"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content"
			android:inputType="numberDecimal"
			android:layout_weight="1"
			android:textColor="#0000FF"
			android:text=""/>
	</TableRow>
	<TableRow>
		<TextView android:text="缴纳个税:"/>
		<EditText android:id="@+id/etGeshui"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content"
			android:cursorVisible="false"
			android:editable="false"
			android:layout_weight="1"
			android:textColor="#FF0000"
			android:text="0.00"/>
		<Button android:id="@+id/btnJisuan"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content"
			android:layout_span="2"
			android:layout_weight="1"
			android:textStyle="bold"
			android:textSize="18sp"
			android:textColor="#0000FF"
			android:text="计  算"/>
	</TableRow>	
</TableLayout>

<ScrollView
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="fill_parent"
	android:layout_height="wrap_content"
	>
	<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	    android:orientation="vertical"
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"
	    >
	    <TextView  
		    android:layout_width="fill_parent" 
		    android:layout_height="wrap_content" 
		    android:textSize="16sp"
		    android:textStyle="bold"
		    android:textColor="#FF0000"
		    android:text="个人缴纳社保与公积金缴费比例(可调整)"
		    />
		<TableLayout
			android:id="@+id/tlItems"
			android:layout_width="fill_parent" 
		    android:layout_height="wrap_content" 
			>
			<TableRow>
				<TextView android:text="养老"/>
				<EditText android:id="@+id/etYanglao"
					android:layout_width="80dp" 
					android:layout_height="wrap_content"
					android:inputType="numberDecimal"
					android:text="8"/>
				<TextView android:text="%"/>
				<TextView android:id="@+id/tvYanglaoNum" 
					android:layout_width="wrap_content" 
			    	android:layout_height="wrap_content" 
			    	android:layout_marginLeft="10dip"
					android:textColor="#00FFFF"
					android:text="0.00"/>
			</TableRow>
			<TableRow>
				<TextView android:text="医疗"/>
				<EditText android:id="@+id/etYiliao"
					android:layout_width="80dp" 
					android:layout_height="wrap_content"
					android:inputType="numberDecimal"
					android:text="2"/>
				<TextView android:text="% + 3元 "/>
				<TextView android:id="@+id/tvYiliaoNum" 
					android:layout_width="wrap_content" 
			    	android:layout_height="wrap_content" 
			    	android:layout_marginLeft="10dip"
					android:textColor="#00FFFF" 
					android:text="0.00"/>
			</TableRow>
			<TableRow>
				<TextView android:text="失业"/>
				<EditText android:id="@+id/etShiye"
					android:layout_width="80dp" 
					android:layout_height="wrap_content"
					android:inputType="numberDecimal"
					android:text="0.2"/>
				<TextView android:text="%"/>
				<TextView android:id="@+id/tvShiyeNum" 
					android:layout_width="wrap_content" 
			    	android:layout_height="wrap_content" 
			    	android:layout_marginLeft="10dip"
					android:textColor="#00FFFF" 
					android:text="0.00"/>
			</TableRow>	
			<TableRow>
				<TextView android:text="住房公积金 "/>
				<EditText android:id="@+id/etZhufang"
					android:layout_width="80dp" 
					android:layout_height="wrap_content"
					android:inputType="numberDecimal"
					android:text="12"/>
				<TextView android:text="%"/>
				<TextView android:id="@+id/tvZhufangNum" 
					android:layout_width="wrap_content" 
			    	android:layout_height="wrap_content" 
			    	android:layout_marginLeft="10dip"
					android:textColor="#00FFFF" 
					android:text="0.00"/>
			</TableRow>
		</TableLayout>
		<TextView 
			android:layout_width="wrap_content" 
		    android:layout_height="wrap_content" 
		    android:textSize="16sp"
		    android:textStyle="bold"
		    android:textColor="#FF0000"
			android:text="缴费基数(可调整)"/>
		<TableLayout
			android:id="@+id/tlZhengshuiJishu"
			android:layout_width="fill_parent" 
		    android:layout_height="wrap_content" 
			>
			<TableRow>
				<TextView android:text="社保:"/>
				<EditText android:id="@+id/etShebaoBase"
					android:layout_width="wrap_content" 
					android:layout_height="wrap_content"
					android:inputType="numberDecimal"
					android:layout_weight="1"
					android:text=""/>
				<TextView android:text="医疗:"/>
				<EditText android:id="@+id/etYiliaoBase"
					android:layout_width="wrap_content" 
					android:layout_height="wrap_content"
					android:inputType="numberDecimal"
					android:layout_weight="1"
					android:text=""/>
			</TableRow>
			<TableRow>
				<TextView android:text="住房公积金:"/>
				<EditText android:id="@+id/etZhufangBase"
					android:layout_width="wrap_content" 
					android:layout_height="wrap_content"
					android:inputType="numberDecimal"
					android:layout_weight="1"
					android:text=""/>
				<TextView android:text="个税起征点 :"/>
				<EditText android:id="@+id/etQizhengdianBase"
					android:layout_width="wrap_content" 
					android:layout_height="wrap_content"
					android:inputType="numberDecimal"
					android:layout_weight="1"
					android:text="2000"/>
			</TableRow>
		</TableLayout>
	</LinearLayout>
</ScrollView>
</LinearLayout>

2.java实现，计算个税的方法很多，网上都有介绍，目前是按照9级税率的算法实现的，代码如下：

/**
 * 个人所得税计算器
 * @author ameyume
 *
 */
public class PersonalTax extends Activity {
	private static final String LOG_TAG = "PersonalTax";
	
	private TextView tvYanglaoNum, tvYiliaoNum, tvShiyeNum, tvZhufangNum;
	private EditText etShuiqianNum, etShuihouNum, etGeshui;
	private EditText etYanglao, etYiliao, etShiye, etZhufang;
	private EditText etShebaoBase, etYiliaoBase, etZhufangBase, etQizhengdianBase;
	private Button btnJisuan;
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
//        setTitle("个税通——个人所得税计算器");
        
        // 社保与住房公积金缴费金额
        tvYanglaoNum = (TextView)findViewById(R.id.tvYanglaoNum);
        tvYiliaoNum = (TextView)findViewById(R.id.tvYiliaoNum);
        tvShiyeNum = (TextView)findViewById(R.id.tvShiyeNum);
        tvZhufangNum = (TextView)findViewById(R.id.tvZhufangNum);
        
        // 税前税后以及个人所得税金额
        etShuiqianNum = (EditText)findViewById(R.id.etShuiqianNum);
        etShuiqianNum.addTextChangedListener(new TextWatcher() {

			@Override
			public void afterTextChanged(Editable arg0) {
				// TODO Auto-generated method stub
				// 把输入内容同步显示在社保基数，医疗基数，住房公积金基数中
				etShebaoBase.setText(etShuiqianNum.getText());
				etYiliaoBase.setText(etShuiqianNum.getText());
				etZhufangBase.setText(etShuiqianNum.getText());
			}

			@Override
			public void beforeTextChanged(CharSequence s, int start, int count,
					int after) {
				// TODO Auto-generated method stub
				
			}

			@Override
			public void onTextChanged(CharSequence s, int start, int before,
					int count) {
				// TODO Auto-generated method stub
				
			}
        	
        });
        
        etShuihouNum = (EditText)findViewById(R.id.etShuihouNum);
        etGeshui = (EditText)findViewById(R.id.etGeshui);
        
        // 社保与住房公积金缴费比例
        etYanglao = (EditText)findViewById(R.id.etYanglao);
        etYiliao = (EditText)findViewById(R.id.etYiliao);
        etShiye = (EditText)findViewById(R.id.etShiye);
        etZhufang = (EditText)findViewById(R.id.etZhufang);
        
        // 社保与住房公积金缴费基数
        etShebaoBase = (EditText)findViewById(R.id.etShebaoBase);
        etYiliaoBase = (EditText)findViewById(R.id.etYiliaoBase);
        etZhufangBase = (EditText)findViewById(R.id.etZhufangBase);
        etQizhengdianBase = (EditText)findViewById(R.id.etQizhengdianBase);
        
        // 计算
        btnJisuan = (Button)findViewById(R.id.btnJisuan);
        btnJisuan.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				// 计算个税
				String strShuiqian = etShuiqianNum.getText().toString();
				if (strShuiqian.length() <= 0) {
					Toast.makeText(getApplicationContext(), "请输入税前收入！", Toast.LENGTH_SHORT).show();
					etShuiqianNum.requestFocus();
					return;
				}
				
				String strYanglao = etYanglao.getText().toString();
				if (strYanglao.length() <= 0) {
					Toast.makeText(getApplicationContext(), "请输入养老缴费比例！", Toast.LENGTH_SHORT).show();
					etYanglao.requestFocus();
					return;
				}
				String strYiliao = etYiliao.getText().toString();
				if (strYiliao.length() <= 0) {
					Toast.makeText(getApplicationContext(), "请输入医疗缴费比例！", Toast.LENGTH_SHORT).show();
					etYiliao.requestFocus();
					return;
				}
				String strShiye = etShiye.getText().toString().trim();
				if (strShiye.length() <= 0) {
					Toast.makeText(getApplicationContext(), "请输入失业缴费比例！", Toast.LENGTH_SHORT).show();
					etShiye.requestFocus();
					return;
				} 
				String strZhufang = etZhufang.getText().toString();
				if (strZhufang.length() <= 0) {
					Toast.makeText(getApplicationContext(), "请输入住房公积金缴费比例！", Toast.LENGTH_SHORT).show();
					etZhufang.requestFocus();
					return;
				}
				String strShebaoBase = etShebaoBase.getText().toString();
				if (strShebaoBase.length() <= 0) {
					Toast.makeText(getApplicationContext(), "请输入社保缴费基数！", Toast.LENGTH_SHORT).show();
					etShebaoBase.requestFocus();
					return;
				} 
				String strYiliaoBase = etYiliaoBase.getText().toString();
				if (strYiliaoBase.length() <= 0) {
					Toast.makeText(getApplicationContext(), "请输入医疗缴费基数！", Toast.LENGTH_SHORT).show();
					etYiliaoBase.requestFocus();
					return;
				} 
				String strZhufangBase = etZhufangBase.getText().toString();
				if (strZhufangBase.length() <= 0) {
					Toast.makeText(getApplicationContext(), "请输入住房公积金缴费基数！", Toast.LENGTH_SHORT).show();
					etZhufangBase.requestFocus();
					return;
				} 
				String strQizhengdianBase = etQizhengdianBase.getText().toString();
				if (strQizhengdianBase.length() <= 0) {
					Toast.makeText(getApplicationContext(), "请输入个人所得税起征点！", Toast.LENGTH_SHORT).show();
					etQizhengdianBase.requestFocus();
					return;
				} 
				
				try{
					float shuiqianNum = Float.parseFloat(strShuiqian);
					float yanglaoNum = Float.parseFloat(strYanglao);
					float yiliaoNum = Float.parseFloat(strYiliao);
					float shiyeNum = Float.parseFloat(strShiye);
					float zhufangNum = Float.parseFloat(strZhufang);
					float shebaoBase = Float.parseFloat(strShebaoBase);
					float yiliaoBase = Float.parseFloat(strYiliaoBase);
					float zhufangBase = Float.parseFloat(strZhufangBase);
					float qizhengdianBase = Float.parseFloat(strQizhengdianBase);
					
					// 养老缴纳金额
					float yanglao = shebaoBase * yanglaoNum * 0.01f;
					tvYanglaoNum.setText(String.valueOf(yanglao));
					
					// 医疗缴纳金额
					float yiliao = yiliaoBase * yiliaoNum * 0.01f + 3;
					tvYiliaoNum.setText(String.valueOf(yiliao));
					
					// 失业缴纳金额
					float shiye = shebaoBase * shiyeNum * 0.01f;
					tvShiyeNum.setText(String.valueOf(shiye));
					
					// 住房公积金缴纳金额
					float zhufang = zhufangBase * zhufangNum * 0.01f;
					tvZhufangNum.setText(String.valueOf(zhufang));
					
					// 计算个税
					float shuihou = shuiqianNum - yanglao - yiliao - shiye - zhufang;
					float geshui = 0f;
					if (shuihou > qizhengdianBase) {
						// 需要交税
						float jiaoshuiBase = shuihou - qizhengdianBase;
						if (jiaoshuiBase <= 500) {
							geshui = jiaoshuiBase * 0.05f;
						} else if (jiaoshuiBase > 500 && jiaoshuiBase <= 2000) {
							geshui = jiaoshuiBase * 0.1f - 25;
						} else if (jiaoshuiBase > 2000 && jiaoshuiBase <= 5000) {
							geshui = jiaoshuiBase * 0.15f - 125;
						} else if (jiaoshuiBase > 5000 && jiaoshuiBase <= 20000) {
							geshui = jiaoshuiBase * 0.2f - 375;
						} else if (jiaoshuiBase > 20000 && jiaoshuiBase <= 40000) {
							geshui = jiaoshuiBase * 0.25f - 1375;
						} else if (jiaoshuiBase > 40000 && jiaoshuiBase <= 60000) {
							geshui = jiaoshuiBase * 0.3f - 3375;
						} else if (jiaoshuiBase > 60000 && jiaoshuiBase <= 80000) {
							geshui = jiaoshuiBase * 0.35f - 6375;
						} else if (jiaoshuiBase > 80000 && jiaoshuiBase <= 100000) {
							geshui = jiaoshuiBase * 0.4f - 10375;
						} else if (jiaoshuiBase > 100000) {
							geshui = jiaoshuiBase * 0.45f - 15375;
						}
					}
					shuihou -= geshui;
					if (shuihou < 0f) {
						Toast.makeText(getApplicationContext(), "税后收入为负数，请检查输入是否正确！", Toast.LENGTH_SHORT).show();
						etShuihouNum.setTextColor(Color.RED);
					} else {
						etShuihouNum.setTextColor(Color.BLUE);
					}
					etShuihouNum.setText(String.valueOf(shuihou));
					etGeshui.setText(String.valueOf(geshui));
				} catch(Exception e) {
					e.printStackTrace();
					Log.e(LOG_TAG, "parseFloat ERROR!!!");
				}
			}
        });
    }
}