Android学习笔记 - 传递参数到下一个Activity

1. 透过Bundle物件传递参数到下一个Activity

2. 第一个Activity(MainActivity.java)

package org.me.android_transferparam;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity {
    private Button nextButton;
    private EditText nameEdit;
    private EditText phoneEdit;

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);
        //载入所有的Widget
        loadWidget();
        
        nextButton.setOnClickListener(new Button.OnClickListener(){
           @Override
           public void onClick(View view){
               //传送参数到下一个Actitity
               deliverToNextActitity();
           }
        });
    }

    public void deliverToNextActitity(){
        //建立一个bundle物件，并将要传递的参数放到bundle里
        Bundle bundle = new Bundle();
        bundle.putString("name", nameEdit.getText().toString());
        bundle.putString("phone", phoneEdit.getText().toString());
        Intent intent = new Intent();
        //设定下一个Actitity
        intent.setClass(this, SecondActivity.class);
        intent.putExtras(bundle);
        //开启Activity
        startActivity(intent);
    }

    private void loadWidget(){
        nextButton = (Button) findViewById(R.id.nextButton);
        nameEdit = (EditText) findViewById(R.id.nameEdit);
        phoneEdit = (EditText) findViewById(R.id.phoneEdit);
    }
}

3. 第二个Activity(SecondActivity.java)

package org.me.android_transferparam;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class SecondActivity extends Activity {

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.second);
        TextView content = (TextView) findViewById(R.id.content);
        Button backButton = (Button) findViewById(R.id.backButton);
        //取得前一个Activity传过来的Bundle物件
        Bundle bundle = getIntent().getExtras();
        content.setText("姓名："+bundle.getString("name")+"   电话："+bundle.getString("phone"));

        backButton.setOnClickListener(new Button.OnClickListener(){
           @Override
           public void onClick(View view){
               //结束此Activity
               finish();
           }
        });
    }
}

4. main.xml(Layout)

5. second.xml(Layout)

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6. 程式启动及输入参数之後的画面