How to pass an Object from One Activity to another in Android.
Hello all
This is a simple post that shows How to pass an Object from One Activity to another in Android.
I am going to pass the following object from One Activity to another.
MyObject{
String name;
String website;
}
This is the class that defines the Object.
package com.coderzheaven.passarraylist;
import android.os.Parcel;
import android.os.Parcelable;
public class MyObject implements Parcelable{
String name,website;
public MyObject(){
}
private MyObject(Parcel in){
this.name = in.readString();
this.website = in.readString();
}
public String getWebsite() {
return website;
}
public void setWebsite(String website) {
this.website = website;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(this.name);
dest.writeString(this.website);
}
public static final MyObject.Creator<MyObject> CREATOR = new MyObject.Creator<MyObject>() {
public MyObject createFromParcel(Parcel in) {
return new MyObject(in);
}
public MyObject[] newArray(int size) {
return new MyObject[size];
}
};
}
This is the first activity that sends the object to second activity.
package com.coderzheaven.passarraylist;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.setTitle("Main Activity");
final MyObject myobj = new MyObject();
myobj.setName("Coderz");
myobj.setWebsite("CoderzHeaven.com");
TextView name = (TextView)findViewById(R.id.name);
name.setText("Name : " + myobj.getName());
TextView website = (TextView)findViewById(R.id.website);
website.setText("Website : " + myobj.getWebsite());
findViewById(R.id.button1).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, Second.class);
intent.putExtra("myobject", myobj);
startActivity(intent);
}
});
}
}
This is the second Activity.
package com.coderzheaven.passarraylist;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class Second extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second_activity);
this.setTitle("Second Activity");
Bundle b = getIntent().getExtras();
if(b!=null){
MyObject myobj = (MyObject)getIntent().getExtras().getParcelable("myobject");
TextView name = (TextView)findViewById(R.id.name);
name.setText("Name : " + myobj.getName());
TextView website = (TextView)findViewById(R.id.website);
website.setText("Website : " + myobj.getWebsite());
}
}
}
activity_main.xml.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:textStyle="bold" />
<TextView
android:id="@+id/website"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/name"
android:layout_margin="5dp"
android:textStyle="bold" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/website"
android:text="Pass Object to Next Activity" />
</RelativeLayout>
second_activity.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:textStyle="bold" />
<TextView
android:id="@+id/website"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/name"
android:layout_margin="5dp"
android:textStyle="bold" />
</RelativeLayout>
You can download the tutorial PDF from here.
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