完成圖
1.來源_First.java
/*
//1.建立Intent物件
Intent myIntent = new Intent();
//2.藉由setClass()方法設定來源與目的地類別
myIntent.setClass(First.this, Second.class);
//3.建立Bundle物件，利用putString(鍵值,資料)方法新增字串資料
Bundle bundle = new Bundle();
bundle.putString("HEIGHT", height.getText().toString());
bundle.putString("WEIGHT“, weight.getText().toString());
//4.使用Intenet物件的puExtras()方法，附加Bundle物件
myIntent.putExtras(bundle);
//6.啟動活動
startActivity(myIntent);
*/
- package com.example.intent6_2;
- import android.os.Bundle;
- import android.app.Activity;
- import android.content.Intent;
- import android.view.Menu;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- import android.widget.EditText;
- public class First extends Activity {
- EditText et1,et2,et3;
- Button btn1;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.first);
- et1=(EditText)findViewById(R.id.editText1);
- et2=(EditText)findViewById(R.id.editText2);
- et3=(EditText)findViewById(R.id.editText3);
- btn1=(Button)findViewById(R.id.button1);
- btn1.setOnClickListener(new OnClickListener(){
- @Override
- public void onClick(View v) {
- Intent i=new Intent();
- i.setClass(First.this, Second.class);
- Bundle b1=new Bundle();
- b1.putString("1", et1.getText().toString());
- b1.putString("2", et2.getText().toString());
- b1.putString("3", et3.getText().toString());
- i.putExtras(b1);
- startActivity(i);
- }});
- }
- }
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2.目的地_Second.java
/*在目標活動可以呼叫Activity物件的getIntent()方法取得Intent物件，
然後呼叫Intent物件的getExtras()方法取得攜帶的Bundle物件*/
- package com.example.intent6_2;
- import android.app.Activity;
- import android.os.Bundle;
- import android.widget.TextView;
- public class Second extends Activity {
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.second);
- double n1,n2,n3,sum,avg;
- Bundle b2=this.getIntent().getExtras();
- if(b2!=null){
- n1=Double.parseDouble(b2.getString("1"));
- n2=Double.parseDouble(b2.getString("2"));
- n3=Double.parseDouble(b2.getString("3"));
- sum=n1+n2+n3;
- avg=sum/3;
- TextView output=(TextView)findViewById(R.id.output);
- output.setText(getString(R.string.s1)+n1+getString(R.string.s2)+n2+getString(R.string.s3)+n3
- +"\n"+getString(R.string.s4)+sum+getString(R.string.s5)+avg);
- }
- }
- }
復制代碼
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