android intent跳转时传参

java代码：

mainactivity：

<span style="font-size:24px;">package com.xpc.intentdemo;
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;
import android.widget.EditText;

public class MainActivity extends Activity {

String mainsString;
int mainInt=99;//即将要传递给跳转activity的int型99
EditText edittextmain;
Button buttonmain;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
edittextmain = (EditText) findViewById(R.id.editText1);
buttonmain = (Button) findViewById(R.id.button1);
buttonmain.setOnClickListener(listener1);
}

private OnClickListener listener1 = new OnClickListener() {

@Override
public void onClick(View arg0) {
String mainString = edittextmain.getText().toString();//从文本输入框
中获得即将传递给intentactivity的string型</span><span style="font-size:24px;">
//Intent intent = new Intent(arg0.getContext(), IntentActivity.class);
Intent intent = new Intent(MainActivity.this, IntentActivity.class);
intent.putExtra("mainString", mainString);
</span><span style="font-size:24px;"> intent.putExtra("mainInt", mainInt);
startActivity(intent);
// Intent intent = new Intent();
// intent.setClass(MainActivity.this, IntentActivity.class);
// startActivity(intent);
}
};

}
</span>

<span style="font-size:24px;">Intent intent = new Intent(MainActivity.this, IntentActivity.class);
intent.putExtra("mainString", mainString);
</span><span style="font-size:24px;">			intent.putExtra("mainInt", mainInt);
startActivity(intent);</span>

这块为关键代码，

<span style="font-size: 24px;">new Intent(当前类名.this,即将跳转的类名.class)</span>

<span style="font-size: 24px;"></span><pre name="code" class="java"><span style="font-size: 24px;">intent.putExtra("mainString", mainString)</span>

intentactivity代码：

package com.xpc.intentdemo;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class IntentActivity extends Activity
{
Button intenButton;
TextView intentTextView;
String intentString;
int intentInt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_intent);
Bundle extra = getIntent().getExtras();
intentInt=extra.getInt("mainInt");
intentString= extra.getString("mainString")+intentInt;
intenButton=(Button)findViewById(R.id.button1);
intentTextView=(TextView)findViewById(R.id.textView2);
intenButton.setOnClickListener(listener1);
}
private OnClickListener listener1= new OnClickListener() {
@Override
public void onClick(View arg0) {
intentTextView.setText(intentString);
}
};

}主函数xml布局文件
<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=".MainActivity" >
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_weight="3"
android:ems="10" />

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/editText1"
android:layout_alignParentRight="true"
android:layout_weight="1"
android:text="跳转" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="15dp"
android:text="MainActivity"
android:textSize="30sp" />

</RelativeLayout>
跳转后xml界面：
<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=".IntentActivity" >

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="IntentActivity"
android:textSize="30sp" />

<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="18dp"
android:text="等待接收"
android:textSize="30sp" />

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginLeft="50dp"
android:text="接收" />

</RelativeLayout>

注意要在manifest文件中加上  <activity android:name=".IntentActivity"></activity>
demo链接