实现Activity之间跳转

MainActivity.java

package com.wxh.jump;

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

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

//android中任何可视化的控件的父类都是View
public void jump(View view)
{
//多态
Toast.makeText(this, "按钮被点击", Toast.LENGTH_SHORT).show();
Intent intent=new Intent(this,SecondActivity.class);
//启动activity
this.startActivity(intent);
//销毁当前Activity
this.finish();
}
}


SecondActivity.java
package com.wxh.jump;

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

public class SecondActivity extends Activity{

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.second);

}
}


layout

activity_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=".MainActivity" >

<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/btn_txt"
android:onClick="jump"
/>

</RelativeLayout>


second.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="这是第二个界面"
/>
</LinearLayout>


values
strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

<string name="app_name">界面跳转</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string name="btn_txt">跳转到下一个界面</string>

</resources>


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

<uses-sdk
android:minSdkVersion="14"
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.wxh.jump.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=".SecondActivity"></activity>
</application>
</manifest>