第一种，直接使用Intent去传递数据//传递数据
Intent intent = new Intent(MainActivity.this, OtherActivity.class);
intent.putExtra("key","value");
startActivity(intent);
//接收数据
Intent intent = getIntent();
String name = intent.getStringExtra("key");第二种，使用Application/全局变量传递传递数据创建一个Application的类public class MyApp extends Application {
public String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public void onCreate() {
super.onCreate();
setName("maomao");
}
}
//使用并定义myApp;
private MyApp myApp;
//实例化Application，并传递数据
myApp = (MyApp)getApplication();
myApp.setName("maomaomao");
Intent intent = new Intent(MainActivity.this, ShowNameActivity.class);
startActivity(intent);
//接收数据
private MyApp myApp;
myApp = (MyApp) getApplication();
String name = myApp.getName();*这种方式千万别忘记要配置一下AndroidManifest.xml这个文件在application 添加 android:name=".MyApp"这里的MyApp 就是上面定义的第三种，使用剪切板传递数据//传递数据
ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
clipboardManager.setText(name);
Intent intent = new Intent(MainActivity.this, ShowNameActivity.class);
startActivity(intent);//接收数据ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
String name = clipboardManager.getText();也可以使用剪切板的方式传递对象//创建对象MyData
public class MyData implements Serializable {
private int age;
private String name;
public MyData(String name, int age){
super();
this.name = name;
this.age = 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;
}
@Override
public String toString() {
return "MyData{" +
"age=" + age +
", name='" + name + '\'' +
'}';
}
}
//对象方式传数据
MyData myData = new MyData("mao", 23);
//将对象转为字符串
ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
String base64String = "";
try {
ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
objectOutputStream.writeObject(myData);
base64String = Base64.encodeToString(byteArrayOutputStream.toByteArray(), Base64.DEFAULT);
objectOutputStream.close();
} catch (Exception e) {
}
clipboardManager.setText(base64String);
Intent intent = new Intent(MainActivity.this, ShowNameActivity.class);
startActivity(intent);
//接收对象数据
ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
String msg = clipboardManager.getText().toString();
byte[] base64Bype = Base64.decode(msg, Base64.DEFAULT);
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(base64Bype);
try{
ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
MyData myData = (MyData) objectInputStream.readObject();
String str = myData.toString();
}catch (Exception e){
}第四种，直接使用静态变量传递数据这种方式需要在接收数据的Activity中定义自己的属性变量//定义变量
public static int age;
public static String name;
//传递数据
Intent intent = new Intent();
intent.setClass(MainActivity.this, ShowNameActivity.class);
ShowNameActivity.name = "maomaomaomao";
ShowNameActivity.age = 90;
startActivity(intent);
//接收数据-直接使用变量的数据就好了
Log.in("name >>>" + name + " age>>>" + age);