activity之简单的页面跳转

1,在activity_main.xml中添加一个按钮

内容:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container_1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.activity_tiaozhuan.MainActivity"
    tools:ignore="MergeRootFrame" >
    <Button
        android:id="@+id/bt_activity"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:text="跳转" />
</RelativeLayout>

2,新建一个跳转的目标页面的xml文件:activity_second.xml,并且添加一个TextView

内容:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container_2"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.activity_tiaozhuan.MainActivity"
    tools:ignore="MergeRootFrame" >
    <TextView
        android:id="@+id/tv_activity"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="第二个activity"
        android:textColor="#ff0000" />
</RelativeLayout>

3,新建一个SecondActivity.java，把MainActivity里的内容复制过去，改下这行内容：  

 setContentView(R.layout.activity_second);

内容:

package com.example.activity_tiaozhuan;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
public class SecondActivity extends ActionBarActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
    }
}

4,在MainActivity里实现页面跳转

内容:

package com.example.activity_tiaozhuan; //包名视具体情况自行改动
import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends ActionBarActivity implements OnClickListener {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
                                       
        Button bt = (Button) findViewById(R.id.bt_activity);  //查找到按钮bt_activity
        bt.setOnClickListener(this); //给按钮注册点击事件
    }
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.bt_activity:
            method(); //按钮是R.id.bt_activity时,调用method()方法来实现点击的具体意图
            break;
        }
                                       
    }
    private void method() {
        Intent intent = new Intent(this,SecondActivity.class); //定义一个跳转到SecondActivity的意图
        startActivity(intent); //启动意图intent
                                               
    }
}

5,在AndroidMainfest.xml中注册SecondActivity,添加:

<activity
           android:name="com.example.activity_tiaozhuan.SecondActivity" ></activity>

内容:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.activity_tiaozhuan"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.activity_tiaozhuan.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.activity_tiaozhuan.SecondActivity" ></activity>
              
    </application>
</manifest>