导航回ActionBar中的父活动而不处理向上按钮事件

android:parentActivityName属性仅在API级别后支持.

另一种方法是使用support-library:v7与NavUtils结合使用.

关于这个主题有一个很好的培训材料(包括兼容性问题).请检查 - http://developer.android.com/training/implementing-navigation/ancestral.html

话虽这么说,我发布下面的代码,因为它的工作原理: -

MainActivity.Java

package com.example.activitydatasend;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button click = (Button) findViewById(R.id.click);

        click.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent = new Intent(MainActivity.this,Second.class);
                intent.putExtra("first", "first");
                intent.putExtra("second", "second");
                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;
    }

}

SecondActivity.java

package com.example.activitydatasend;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class Second extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second);
        Bundle bundle = getIntent().getExtras();
        String a = bundle.getString("first");
        String b = bundle.getString("second");
        System.out.println(a+b);
        getActionBar().setDisplayHomeAsUpEnabled(true);
    }

    @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;
    }

}

AndroidManifext.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.activitydatasend"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="11"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.activitydatasend.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="com.example.activitydatasend.Second"
            android:label="@string/app_name"
            android:parentActivityName="com.example.activitydatasend.MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
    </application>

</manifest>

activity_main.xml中

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_
    android:layout_>

    <Button
        android:layout_
        android:layout_
        android:id="@+id/click"
        android:text="Click" />

</RelativeLayout>

second.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_
    android:layout_
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_
        android:layout_
        android:text="Second Text"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>

如果您收到类似的错误

E/NavUtils? getParentActivityIntent: bad parentActivityName

要么

does not have a parent activity name specified. (Did you forget to add the android.support.PARENT_ACTIVITY <meta-data>  element in your manifest?)

您可能需要将android:value更改为完整路径.而不是

 <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value=".MainActivity" />

做

 <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.package.SecondActivity" />