android studio创建一个最简单的跳转activity

实现目的：由mainActivity跳转到otherActivity

1.写好两个layout文件，activity_main.xml和otherxml.xml

activity_main.xml

<?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="view.com.cai.MainActivity">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="跳转"
        android:onClick="skip"/>
</RelativeLayout>

otherxml.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:weightSum="1">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="hello cai"
        />
</LinearLayout>

2.两个activity，分别是mainActivity和otherActivity

MainActivity

package view.com.cai;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void skip(View view){
        Intent intent = new Intent();
        intent.setClass(MainActivity.this,otherActivity.class);
        startActivity(intent);
    }
}

otherActivity

package view.com.cai;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class otherActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.otherxml);
    }
}

3.配置androidManifest，在application里面添加otherActivity的信息

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="view.com.cai">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <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=".otherActivity"></activity>
    </application>

</manifest>