Intent打开Activity

1、创建两个Activity并配置好Layout和AndroidManifest.xml

一、创建

 

--------------------------MainActivity----------------------------------

<?xml version="1.0" encoding="utf-8"?>
<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="com.example.admin.webchanjian.MainActivity">


<Button
android:id="@+id/btn_open"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn_open"
android:textSize="35dp"
/>
</RelativeLayout>

 

 

private Button btn_open;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn_open=(Button) findViewById(R.id.btn_open);
btn_open.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent();
intent.setClass(MainActivity.this,Main2Activity.class);
startActivity(intent);//打开Main2Activity
}
});
}

 

---------------------Main2Activity-----------------------------------------------

 

<?xml version="1.0" encoding="utf-8"?>
<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="com.example.admin.webchanjian.Main2Activity">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/text_value"
android:textSize="50sp"
/>
</RelativeLayout>

 

package com.example.admin.webchanjian;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class Main2Activity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
}
}

 

 -----------------------配置AndroidManifest.xml---------------------------------

 

<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Main2Activity"></activity>

 

posted @ 2016-10-06 16:26  Fei非非  阅读(274)  评论(0编辑  收藏  举报