9-第一个app项目

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.administrator.married.MainActivity"
    android:orientation="vertical"
    android:weightSum="1">

    <TextView
        android:text="性别:"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="40dp"
        android:textColor="@android:color/black"
        android:id="@+id/sex" />

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textPersonName"
        android:ems="10"
        android:id="@+id/edtSex"
        android:hint="(输入性别)"
        android:singleLine="false" />

    <TextView
        android:text="年龄:"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="40dp"
        android:textColor="@android:color/black"
        android:id="@+id/age" />

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textPersonName"
        android:ems="10"
        android:id="@+id/edtAge"
        android:hint="(输入年龄)" />

    <Button
        android:text="确定"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/btnOk"
        android:layout_gravity="center_horizontal"
        android:textSize="40dp"
        android:elevation="24dp" />

    <TextView
        android:text="@string/result"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="40dp"
        android:textColor="@android:color/black"

package com.example.administrator.married;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.*;

public class MainActivity extends AppCompatActivity {

    EditText mEdtSex,mEdtAge;
    TextView mTxtR;
    Button mBtnOk;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mEdtSex = (EditText)findViewById(R.id.edtSex);
        mEdtAge = (EditText)findViewById(R.id.edtAge);
        mTxtR = (TextView)findViewById(R.id.txtR);
        mBtnOk = (Button)findViewById(R.id.btnOk);

        mBtnOk.setOnClickListener(btnOkOnClick);
    }

    private View.OnClickListener btnOkOnClick = new View.OnClickListener(){
        public void onClick(View v){
            String strSex=mEdtSex.getText().toString();
            int iAge=Integer.parseInt(mEdtAge.getText().toString());

            String strSug = getString(R.string.result);
            if(strSex.equals("男")){
                if(iAge<28){
                    strSug+="池哥告诉你:还不急";
                }
                else if(iAge>33){
                    strSug+="池哥告诉你:赶快结婚!";
                }
                else{
                    strSug+="池哥告诉你:开始找对象!";
                }
            }
            else{
                if(iAge<25){
                    strSug+="池哥告诉你:还不急";
                }
                else if(iAge>30){
                    strSug+="池哥告诉你:赶快结婚!";
                }
                else{
                    strSug+="池哥告诉你:开始找对象!";
                }
            }

            mTxtR.setText(strSug);
        }
    };
}

        android:id="@+id/txtR" />

</LinearLayout>