Activity間傳值方式總結

第一種方法：(intent)

傳送方：

intent intent = new intent();

intent.putextra("name", "諸葛亮");
intent.putextra("age", 50);
intent.putextra("iq", 200.0f);
intent.setclass(mainactivity.this, secondactivity.class);
mainactivity.this.startactivity(intent);

intent intent = getintent();

string name = intent.getstringextra("name");
int age = intent.getintextra("age", 0);
float iq = intent.getfloatextra("iq", 0.0f);
textview2.settext("name:"+name+",age:"+age+",iq:"+iq);

傳送方：

intent intent = new intent();

bundle bundle = new bundle();
bundle.putstring("name", "喬峰");
bundle.putint("age", 40);
bundle.putfloat("weight", 70.4f);
intent.putextras(bundle);
intent.setclass(mainactivity.this, secondactivity.class);
startactivity(intent);

intent intent = getintent();

bundle bundle = intent.getextras();
string name = bundle.getstring("name");
int age = bundle.getint("age");
float weight = bundle.getfloat("weight");
textview.settext(name+","+age+","+weight);

傳送方：

intent intent = new intent();

intent.setclass(mainactivity.this, secondactivity.class);

startactivity(intent);

接受方：

textview = (textview) findviewbyid(r.id.textview);

textview.settext(name);

物件類要實現parclelable介面

傳送方：

intent intent = new intent();

person person = new person("孫悟空",500,55.6f);
intent.putextra("person", person);
intent.setclass(mainactivity.this, secondactivity.class);
startactivity(intent);

intent intent = getintent();

person person = intent.getparcelableextra("person");
textview = (textview) findviewbyid(r.id.textview);
textview.settext(person.tostring());

public class person implements parcelable 

public person(string name, int age, float weight) 
public string getname() 
public void setname(string name) 
public int getage() 
public void setage(int age) 
public float getweight() 
public void setweight(float weight) 
@override
public string tostring() 
@override
public int describecontents() 
@override
public void writetoparcel(parcel dest, int flags) 
public static final parcelable.creatorcreator = new parcelable.creator() 
public person newarray(int size) 
};private person(parcel in) 
}

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