BMI.rar_BMI_android

package com.demo.android.bmi; 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; 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(); } private Button calc_button; private EditText field_height; private EditText field_weight; private TextView view_result; private TextView view_suggest; private void findViews() { calc_button = (Button) findViewById(R.id.submit); field_height = (EditText) findViewById(R.id.height); field_weight = (EditText) findViewById(R.id.weight); view_result = (TextView) findViewById(R.id.result); view_suggest = (TextView) findViewById(R.id.suggest); } protected static final int MENU_ABOUT = Menu.FIRST; protected static final int MENU_Quit = Menu.FIRST + 1; @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); menu.add(0, MENU_ABOUT, 0, "關於..."); menu.add(0, MENU_Quit, 0, "結束"); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { super.onOptionsItemSelected(item); switch (item.getItemId()) { case MENU_ABOUT: openOptionsDialog(); break; case MENU_Quit: finish(); break; } return true; } private void openOptionsDialog() { new AlertDialog.Builder(this).setTitle(R.string.about_title) .setMessage(R.string.about_msg).setPositiveButton( R.string.ok_label, new DialogInterface.OnClickListener() { public void onClick( DialogInterface dialoginterface, int i) { } }).setNegativeButton(R.string.homepage_label, new DialogInterface.OnClickListener() { public void onClick( DialogInterface dialoginterface, int i) { // go to url Uri uri = Uri .parse(getString(R.string.homepage_uri)); Intent intent = new Intent(Intent.ACTION_VIEW, uri); startActivity(intent); } }).show(); } // Listen for button clicks private void setListeners() { calc_button.setOnClickListener(calcBMI); } private Button.OnClickListener calcBMI = new Button.OnClickListener() { public void onClick(View v) { // Switch to report page Intent intent = new Intent(); intent.setClass(Bmi.this, Report.class); Bundle bundle = new Bundle(); bundle.putString("KEY_HEIGHT", field_height.getText().toString()); bundle.putString("KEY_WEIGHT", field_weight.getText().toString()); intent.putExtras(bundle); startActivity(intent); } }; }