Use bundle to transmit data between activities

Bundle may use the put *** () method to add various types of data. Intent can also add data through putextras (bundle), and then use startactivity () when you jump to the next activity, the data is uploaded to the next activity.

package com.intent;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class TestIntentActivity extends Activity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        Button button = (Button)this.findViewById(R.id.button);        button.setOnClickListener(new OnClickListener() {public void onClick(View v) {Intent intent = new Intent(TestIntentActivity.this,SecondActivity.class);Bundle bundle = new Bundle();bundle.putString("key_name", "name");bundle.putString("key_age", "age");intent.putExtras(bundle);startActivity(intent);}});    }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <Button        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/intent"        android:id="@+id/button" /></LinearLayout>

package com.intent;import android.app.Activity;import android.os.Bundle;import android.widget.TextView;public class SecondActivity extends Activity{@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.second);TextView tv1 = (TextView)this.findViewById(R.id.tv1);TextView tv2 = (TextView)this.findViewById(R.id.tv2);Bundle bundle = this.getIntent().getExtras();tv1.setText(bundle.getString("key_name"));tv2.setText(bundle.getString("key_age"));}}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <TextView android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:id="@+id/tv1"/><TextView android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:id="@+id/tv2"/></LinearLayout>

Add the new activity to manifest. xml.