Android教程：使用Bundle在Activity之間傳遞數據

Bundle可能過put****()方法添加各種類型的數據，Intent也可以通過putExtras(Bundle)將數據添加進去，然後通過startActivity()跳到下一下Activity的時候就把數據也傳到下一個Activity了。

1. package com.intent;
3. import Android.app.Activity;
4. import android.content.Intent;
5. import android.os.Bundle;
6. import android.view.View;
7. import android.view.View.OnClickListener;
8. import android.widget.Button;
10. public class TestIntentActivity extends Activity {
11. /** Called when the activity is first created. */
12. @Override
13. public void onCreate(Bundle savedInstanceState) {
14. super.onCreate(savedInstanceState);
15. setContentView(R.layout.main);
16. Button button = (Button)this.findViewById(R.id.button);
17. button.setOnClickListener(new OnClickListener() {
19. public void onClick(View v) {
20. Intent intent = new Intent(TestIntentActivity.this,SecondActivity.class);
21. Bundle bundle = new Bundle();
22. bundle.putString("key_name", "name");
23. bundle.putString("key_age", "age");
24. intent.putExtras(bundle);
25. startActivity(intent);
26. }
27. });
28. }
29. }

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:layout_width="fill_parent"
4. android:layout_height="fill_parent"
5. android:orientation="vertical" >
7. <Button
8. android:layout_width="fill_parent"
9. android:layout_height="wrap_content"
10. android:text="@string/intent"
11. android:id="@+id/button" />
13. </LinearLayout>

1. package com.intent;
3. import android.app.Activity;
4. import android.os.Bundle;
5. import android.widget.TextView;
7. public class SecondActivity extends Activity{
9. @Override
10. protected void onCreate(Bundle savedInstanceState) {
11. super.onCreate(savedInstanceState);
12. setContentView(R.layout.second);
13. TextView tv1 = (TextView)this.findViewById(R.id.tv1);
14. TextView tv2 = (TextView)this.findViewById(R.id.tv2);
16. Bundle bundle = this.getIntent().getExtras();
17. tv1.setText(bundle.getString("key_name"));
18. tv2.setText(bundle.getString("key_age"));
19. }
21. }

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:layout_width="match_parent"
4. android:layout_height="match_parent"
5. android:orientation="vertical" >
7. <TextView android:layout_width="fill_parent"
8. android:layout_height="wrap_content"
9. android:id="@+id/tv1"/>
10. <TextView android:layout_width="fill_parent"
11. android:layout_height="wrap_content"
12. android:id="@+id/tv2"/>
13. </LinearLayout>

最後將新的Activity添加到manifest.xml裡面就可以了

更多Android相關信息見Android 專題頁面 http://www.linuxidc.com/topicnews.aspx?tid=11