初学者-两个Activity的跳转

初学者学习Activity之间的相互跳转

首先创建一个Activity

package com.example.acyaction;

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


public class MainActivity extends Activity {

private Button my_button;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
my_button = (Button) findViewById(R.id.my_button);
my_button.setOnClickListener(new View.OnClickListener() {


@Override
public void onClick(View v) {
// Intent intent = new Intent();
// intent.setClass(MainActivity.this, TestAcy.class);
// startActivity(intent);
// setTitle("other Activity");
Uri uri = Uri.parse("http://www.baidu.com"); // 指定网址
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW); // 指定Action
intent.setData(uri); // 设置Uri
MainActivity.this.startActivity(intent);
// startActivity(new Intent(MainActivity.this, TestAcy.class));
}
});
}


@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;
}

这是布局文件

}

<?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:id="@+id/my_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="my button" />


</LinearLayout>

这是另一个需要跳转的Activity

package com.example.acyaction;


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


public class TestAcy extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setTitle("other Activity");
setContentView(R.layout.test_activity);
}
}

<?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/Text_view"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="这是一个新的Activity" />


</LinearLayout>

别忘了修改配置文件

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


                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.example.acyaction.TestAcy"></activity>
    </application>