我们曾经在一篇文章中为大家详细介绍过有关Android Activity的相关内容。在这里,我们会进一步的对这一操作进行详细剖析。主要就是针对Android Activity跳转的实现。下面就让我们一起看看具体操作方法吧。
Android中提供一个叫Intent的类来实现屏幕之间的跳转,下面是一个简单的示例:
在应用中增加一个Activity(名字为.ForwardTarget),这需要修改AndroidManifest.xml文件,如下:
Android Activity跳转代码示例:
- < ?xml version="1.0" encoding="utf-8"?>
- < manifest xmlns:android="< A href="http://schemas.android.com/
apk/res/android">http://schemas.android.com/apk/res/android< /A>"- package="com.ray.forward"
- android:versionCode="1"
- android:versionName="1.0">
- < application android:icon="@drawable/icon"
android:label="@string/app_name">- < activity android:name=".androidForward"
- 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=".ForwardTarget">
- < /activity>
- < /application>
- < uses-sdk android:minSdkVersion="3" />
- < /manifest>
- < ?xml version="1.0" encoding="utf-8"?>
- < manifest xmlns:android=
"http://schemas.android.com/apk/res/android"- package="com.ray.forward"
- android:versionCode="1"
- android:versionName="1.0">
- < application android:icon="@drawable/icon"
android:label="@string/app_name">- < activity android:name=".androidForward"
- 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=".ForwardTarget">
- < /activity>
- < /application>
- < uses-sdk android:minSdkVersion="3" />
- < /manifest>
然后在layout中的main加入一个id为leah1的按钮,另外再创建一个任意的layout(将要跳转到得layout),我取名为leah1。
接下来是两个类,一个是AndroidForward,另一个是将要跳转到得ForwardTarget,Android Activity跳转实现的代码分别如下:
- AndroidForw:
- package com.ray.forward;
- import android.app.Activity;
- import android.content.Intent;
- import android.os.Bundle;
- import android.view.View;
- import android.widget.Button;
- public class androidForward extends Activity {
- /** Called when the activity is first created. */
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- Button btn1 =(Button)findViewById(R.id.leah1);
- btn1.setOnClickListener(new View.OnClickListener(){
- @Override
- public void onClick(View v) {
- Intent intent = new Intent();
- intent.setClass(androidForward.this, ForwardTarget.class);
- startActivity(intent);
- finish();
//停止当前的Activity,如果不写,则按返回键会跳转回原来的Activity- }
- });
- }
- }
- package com.ray.forward;
- import android.app.Activity;
- import android.content.Intent;
- import android.os.Bundle;
- import android.view.View;
- import android.widget.Button;
- public class androidForward extends Activity {
- /** Called when the activity is first created. */
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- Button btn1 =(Button)findViewById(R.id.leah1);
- btn1.setOnClickListener(new View.OnClickListener(){
- @Override
- public void onClick(View v) {
- Intent intent = new Intent();
- intent.setClass(androidForward.this, ForwardTarget.class);
- startActivity(intent);
- finish();
//停止当前的Activity,如果不写,则按返回键会跳转回原来的Activity- }
- });
- }
- }
- ForwardTarget:
- package com.ray.forward;
- import android.app.Activity;
- import android.os.Bundle;
- public class ForwardTarget extends Activity{
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- // TODO Auto-generated method stub
- super.onCreate(savedInstanceState);
- setContentView(R.layout.leah1);
- }
- }
Android Activity跳转的相关实现方法就为大家介绍到这里。
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