http://blog.csdn.net/sukyle/article/details/4485505
1.Activity之間傳遞數據
(1)利用Intent傳遞數據
傳遞數據的Activity中:
Intent intent = new Intent();
intent.putExtra("name","Jon");//在Intent中加入鍵值對數據。鍵:name,值:Jon
intent.setClass(Activity01.this,Activity02.class);
Activity01.this.startActivity(intent);
在取出數據的Activity中:
Intent intent = getIntent();//獲得傳過來的Intent。
String value = intent.getStringExtra("name");//根據鍵name取出值。
(2)利用Bundle傳遞數據
傳遞數據的Activity:
Intent intent = new Intent();
Bundle myBundle = new Bundle();
myBundle.putString("Key_Name","Tom");
intent.putExtras(myBundle);
intent.setClass(Activity01.this,Activity02.class);
Activity01.this.startActivity(intent);
取出數據的Activity:
Bundle getBundle = getIntent().getExtras();
String value = getBundle.getString("Key_Name");
(3)利用startActivityForResult傳遞數據
startActivityForResult可以把數據傳過去,還可以把那邊的數據傳過來。
傳遞數據的Activity中:
Intent intent = new Intent();
Bundle bundle = new Bundle();
bundle.putString("data", "somedata");//把數據傳過去
intent.putExtras(bundle);
intent.setClass(Activity01.this, Activity02.class);
startActivityForResult(intent, 10);//10是一個代碼
重載onActivityResult方法,用來接收傳過來的數據:
protected void onActivityResult(int requestCode, int resultCode,Intent intent) {
switch (resultCode) {
case RESULT_OK:
Bundle b = intent.getExtras();
String str = b.getString("Result");
setTitle("Return data:" + str);
break;
default:
break;
}
}
接收數據的Activity:
Intent intent = getIntent();
Bundle getBundle = getIntent().getExtras();
String data = getBundle.getString("data");//讀取傳過來的數據
et.setText(data);
EditText edittext = (EditText) findViewById(R.id.text);
Intent intent = new Intent();//實例化一個Intent用來傳過去,可以在Intent裏存放數據。
Bundle bundle = new Bundle();
bundle.putString("Result",edittext.getText().toString());
intent.putExtras(bundle);
Activity02.this.setResult(RESULT_OK,intent);//把Intent(數據)傳過去,RESULT_OK是請求碼。
finish();//結束當前的Activity。
2.http://xqjay19910131-yahoo-cn.iteye.com/blog/1280857
Activity傳遞一個或者多個對象
Activity之間傳遞對象,或者通過Bundle傳遞對象的兩種方式。
1:Serializable方式
傳遞一個對象
2:Parcelable方式
傳遞一個對象、傳遞多個對象(ArrayList<Object>)
方式一:Serializable
傳遞類:
- public class CustomeClass implements Serializable{
- /**
- *
- */
- private static final long serialVersionUID = -7060210544600464481L;
- private String name;
- private String id;
- private int age;
- private String sex;
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- public String getId() {
- return id;
- }
- public void setId(String id) {
- this.id = id;
- }
- public int getAge() {
- return age;
- }
- public void setAge(int age) {
- this.age = age;
- }
- public String getSex() {
- return sex;
- }
- public void setSex(String sex) {
- this.sex = sex;
- }
- }
發送部分:
- CustomeClass cc = new CustomeClass();
- cc.setAge(21);
- cc.setId("123456");
- cc.setName("mingkg21");
- cc.setSex("男");
- Intent intent = new Intent(this, PersonInfo.class);
- intent.putExtra("PERSON_INFO", cc);
- startActivity(intent);
接收部分:
- Intent intent = getIntent();
- CustomeClass cc = CustomeClass)intent.getSerializableExtra("PERSON_INFO");
- setTextView(R.id.id, cc.getId());
- setTextView(R.id.name, cc.getName());
- setTextView(R.id.sex, cc.getSex());
- setTextView(R.id.age, String.valueOf(cc.getAge()));
方式二:Parcelable
傳遞類:
- public class CustomeParcelable implements Parcelable {
- private String name;
- private String id;
- private int age;
- private String sex;
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- public String getId() {
- return id;
- }
- public void setId(String id) {
- this.id = id;
- }
- public int getAge() {
- return age;
- }
- public void setAge(int age) {
- this.age = age;
- }
- public String getSex() {
- return sex;
- }
- public void setSex(String sex) {
- this.sex = sex;
- }
- public static final Parcelable.Creator<CustomeParcelable> CREATOR = new Creator<CustomeParcelable>(){
- public CustomeParcelable createFromParcel(Parcel source) {
- // TODO Auto-generated method stub
- CustomeParcelable cus = new CustomeParcelable();
- cus.name = source.readString();
- cus.id = source.readString();
- cus.age = source.readInt();
- cus.sex = source.readString();
- return cus;
- }
- public CustomeParcelable[] newArray(int size) {
- // TODO Auto-generated method stub
- return new CustomeParcelable[size];
- }
- };
- public int describeContents() {
- // TODO Auto-generated method stub
- return 0;
- }
- public void writeToParcel(Parcel dest, int flags) {
- // TODO Auto-generated method stub
- dest.writeString(name);
- dest.writeString(id);
- dest.writeInt(age);
- dest.writeString(sex);
- }
- }
發送部分:
- CustomeParcelable cc = new CustomeParcelable();
- cc.setAge(21);
- cc.setId("123456");
- cc.setName("mingkg21");
- cc.setSex("男");
- Intent intent = new Intent(this, PersonInfo.class);
- intent.putExtra("PERSON_INFO", cc);
- startActivity(intent);
接受部分:
- Intent intent = getIntent();
- CustomeParcelable cc = intent.getParcelableExtra("PERSON_INFO");
- setTextView(R.id.id, cc.getId());
- setTextView(R.id.name, cc.getName());
- setTextView(R.id.sex, cc.getSex());
- setTextView(R.id.age, String.valueOf(cc.getAge()));
以上爲Parcelable傳遞一個對象,若要實現傳遞多個對象,
傳遞部分:
- Bundle bundle = new Bundle();
- bundle.putParcelableArrayList("mP3TagForNetDTOs",mP3TagForNetDTOs);
- msg.setData(bundle);
- endDocNotice.sendMessage(msg);
接受部分:
- Bundle bundle = msg.getData();
- mP3TagForNetDTOs = bundle.getParcelableArrayList("mP3TagForNetDTOs");