1.傳遞簡單數據
在A Activity中
findViewById(R.id.startBActicityBtn).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent i = new Intent(MainActivity.this,TheActivity.class);// 對基礎的數據類型進行傳遞 i.putExtra("data","我是國人"); startActivity(i); } });在B Activity中接受數據
tv =(TextView)findViewById(R.id.TheTextView); Intent i = getIntent(); tv.setText(i.getStringExtra("data"));這種傳值就是傳遞基本的數據類型
2.傳遞數據 包Bundle
在A Activity中
findViewById(R.id.startBActicityBtn).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent i = new Intent(MainActivity.this,TheActivity.class); Bundle bundle = new Bundle(); bundle.putString("name","qll"); bundle.putInt("age",3);// i.putExtras(bundle); // 另種傳遞方式 i.putExtra("data",bundle); startActivity(i); } }); }在B Activity中接受數據
tv =(TextView)findViewById(R.id.TheTextView); editText = (EditText) findViewById(R.id.editText3); Intent i = getIntent();// Bundle date = i.getExtras();// 接受方式不同 Bundle date = i.getBundleExtra("data"); tv.setText(String.format("name=%s,age=%d",date.getString("name"),date.getInt("age")));這總傳遞方式類似iOS中傳遞字典數據類型過來 。
3.傳遞值對象
自定義一個User類，傳遞自定義類需要對類進行序列化
用Serializable進行序列化
這種方法只需要類實現Serializable接口就可以了
User 類
import java.io.Serializable;public class User implements Serializable{ private String name; private int age; public int getAge(){ return age; } public void setAge(int age){ this.age = age; } public String getName(){ return name; } public void setName(String name){ this.name = name; } public User(String name,int age){ this.name = name; this.age = age; }在A Activity中
findViewById(R.id.startBActicityBtn).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent i = new Intent(MainActivity.this,TheActivity.class); i.putExtra("user",new User("qll",24)); startActivity(i); } }); }在B Activity中
tv =(TextView)findViewById(R.id.TheTextView); User user = (User)i.getSerializableExtra("user"); tv.setText(String.format("user info(name=%s,age=%d)",user.getName(),user.getAge()));用Parcelable實現
同樣的需要實現Parcelable接口
User 類
package com.example.wyhaiapple.transferdata1;import android.os.Parcel;import android.os.Parcelable;import android.text.ParcelableSpan;public class User implements Parcelable{ private String name; private int age; public int getAge(){ return age; } public void setAge(int age){ this.age = age; } public String getName(){ return name; } public void setName(String name){ this.name = name; } public User(String name,int age){ this.name = name; this.age = age; } @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel dest, int flags) { dest.writeString(getName()); dest.writeInt(getAge()); } public static final Creator<User> CREATOR = new Creator<User>() { @Override public User createFromParcel(Parcel source) { return new User(source.readString(),source.readInt()); } @Override public User[] newArray(int size) { return new User[size]; } };}在A Activity中 與上面的相同
在B Activity中
tv =(TextView)findViewById(R.id.TheTextView); User user = (User)i.getParcelableExtra("user"); tv.setText(String.format("user info(name=%s,age=%d)",user.getName(),user.getAge()));4.獲取 Activity 的返回參數
在B Activity中
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_the); tv =(TextView)findViewById(R.id.TheTextView); editText = (EditText) findViewById(R.id.editText3); findViewById(R.id.button2).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent i = new Intent(); i.putExtra("data",editText.getText().toString()); setResult(1,i); finish(); } }); }}在A Activity中
startActivityForResult(i,0); @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); textView.setText("返回的值："+data.getStringExtra("data")); }如有疑問請留言或者到本站社區交流討論，感謝閱讀，希望能幫助到大家，謝謝大家對本站的支持！
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