BMI.rar_BMI android_android_测量bmi程序

package com.demo.android.bmi; //import java.net.URISyntaxException; import java.text.DecimalFormat; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; public class Bmi extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); findViews(); setListeners(); //Button button=(Button)findViewById(R.id.submit); //button.setOnClickListener(CalcBMI); android:numeric="integer" } private Button button; private EditText fieldheight; private EditText fieldweight; private TextView view_result; private TextView view_suggest; protected static final int MENU_ABOUT=Menu.FIRST; protected static final int MENU_QUIT=Menu.FIRST+1; private void findViews() { button=(Button)findViewById(R.id.submit); fieldheight=(EditText)findViewById(R.id.height); fieldweight=(EditText)findViewById(R.id.weight); view_result=(TextView)findViewById(R.id.result); view_suggest=(TextView)findViewById(R.id.suggest); } private void setListeners() { button.setOnClickListener(calcBMI); } private Button.OnClickListener calcBMI = new Button.OnClickListener() { public void onClick(View v) { DecimalFormat nf=new DecimalFormat("0.00"); try { double height=Double.parseDouble(fieldheight.getText().toString())/100; double weight=Double.parseDouble(fieldweight.getText().toString()); double BMI=weight/(height*height); // getText(R.string.bmi_result) view_result.setText("Your BIM is="+nf.format(BMI)); if(BMI>25) { view_suggest.setText(R.string.advice_heavy);} else if(BMI<20) { view_suggest.setText(R.string.advice_light);} else { view_suggest.setText(R.string.advice_average);} openOptionDialog();//有对话框的显示 //显示Android BMI对话框 和toast对话框 } catch(Exception obj) { Toast.makeText(Bmi.this,R.string.input_error, Toast.LENGTH_LONG).show(); } } }; public boolean onCreateOptionsMenu(Menu menu) //建立menu菜单选项和显示出来 { super.onCreateOptionsMenu(menu); menu.add(0,MENU_ABOUT,0,"关于...").setIcon(R.drawable.help_tubiao); menu.add(0,MENU_QUIT,0,"结束").setIcon(R.drawable.cancle_tubiao); return super.onCreateOptionsMenu(menu); } public boolean onOptionsItemSelected(MenuItem item) //menu菜单打开后进入选项处理 { switch(item.getItemId()) { case MENU_ABOUT: openOptionDialog();//显示Android BMI对话框 和toast对话框 break; case MENU_QUIT: finish(); break; } return super.onOptionsItemSelected(item); } public void openOptionDialog()//建立一个Android BMI对话框和toast 对话康 { Toast.makeText(Bmi.this,R.string.toast_message,Toast.LENGTH_LONG).show(); // 在屏幕上显示对话框的内容 new AlertDialog.Builder(Bmi.this).setTitle(R.string.dialog_title) .setMessage(R.string.dialog_message) .setPositiveButton(R.string.dialog_ok, new DialogInterface.OnClickListener(){ public void onClick( DialogInterface dialoginterface,int i){}} ) .setNegativeButton(R.string.homepage_internet, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialoginterface, int i) { // TODO Auto-generated method stub Uri uri=Uri.parse(getString(R.string.homepage_uri)); Intent intent =new Intent(Intent.ACTION_VIEW,uri); startActivity(intent); } }) .show(); } /* private OnClickListener CalcBMI=new OnClickListener(){ public void onClick(View v) { DecimalFormat nf=new DecimalFormat("0.00"); EditText fieldheight=(EditText)findViewById(R.id.height); EditText fieldweight=(EditText)findViewById(R.id.weight); double height=Double.parseDouble(fieldheight.getText().toString())/100; double weight=Double.parseDouble(fieldweight.getText().toString()); double BMI=weight/(height*height); TextView result=(TextView)findViewById(R.id.result); result.setText("Your BMI is "+nf.format(BMI)); TextView fieldsuggest=(TextView)findViewById(R.id.suggest); if(BMI>25) { fieldsuggest.setText(R.string.advice_heavy);} else if(BMI<20) { fieldsuggest.setText(R.string.advice_light);} else { fieldsuggest.setText(R.string.advice_average);} } };*/ }