Simple data types and serialized objects can be saved in the Intent object through the putExtra method in the Intent class, and then the corresponding data can be retrieved using the getXxx method in the target Activity .
It mainly includes the following contents: MainActivity.java, OtherActivity.java (new java class based on Android Activity), factivity_main.xml, other.xml , AndroidMainFest.xml
MainActivity.java
package com.example.pro4;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);//加载布局文件
button=(Button)this.findViewById(R.id.button);//
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// Trigger an intent when the button is clicked
Intent intent=new Intent(MainActivity.this,OtherActivity.class);
// pass the data in the intent
intent.putExtra("name", "Zhang San");
intent.putExtra("age",23);
intent.putExtra("address", "Beijing");
//start intent
startActivity(intent);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
OtherActivity.java
package com.example.pro4;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
public class OtherActivity extends Activity {
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.other);
textView = (TextView) this.findViewById(R.id.msg);
setContentView(R.layout.other);
textView = (TextView)this.findViewById(R.id.msg);//Get text box
Intent intent = getIntent();//Get intent object
Integer age = intent.getIntExtra(" age", 0);//Get the intent object data
String name = intent.getStringExtra("name"); //Get the intent object data String
address = intent.getStringExtra("address");//Get the intent object data
textView. setText("age--->>"+age+"\n"+"name--->>"+name+"\n"+"address--->>"+address);//Set to the text box
}
}
Layout file layout under res
factivity_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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.pro4.MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<Button android:id="@+id/button" android:layout_width="match_parent"
android:layout_height="wrap_content" android:text="test use Intent Data!"></Button>
</RelativeLayout>
other.xml
<?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" >
<TextView
android:id="@+id/msg"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</TextView>
</LinearLayout>
AndroidMainFest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.pro4"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".OtherActivity"></activity>
</application>
</manifest>