AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.iii.lcpan.activity">
<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=".NextActivity"></activity>
注意不可以複製 <intent-filter>等等,那會使他產生兩個應用程式
</application>
</manifest>
<resources>
<string name="app_name">Activity</string>
<string name="firstpage">第一頁</string>
<string name="secondpage">第二頁</string>
<string name="nextpage">下一頁</string>
<string name="lastpage">上一頁</string>
</resources>
第一個畫面:
<?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.iii.lcpan.activity.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/firstpage"
android:id="@+id/textView" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/nextpage"
android:id="@+id/button1"
android:layout_below="@+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:clickable="false" />
</RelativeLayout>
第二個畫面:
<?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.iii.lcpan.activity.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/secondpage"
android:id="@+id/textView" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/lastpage"
android:id="@+id/button2"
android:layout_below="@+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:clickable="false" />
</RelativeLayout>
第一頁轉第二頁的程式:
package com.iii.lcpan.activity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {//implements View.OnClickListener {<<<<因為用了匿名class,所以就不用implements了
private Button btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn = (Button) findViewById(R.id.button1);
// btn.setOnClickListener(this);<<<<不用匿名的話就事先連結MainActivity 到button
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(); //Intent(意圖),用以切換頁面,這個方式每用一次就會產生一個新的activity
intent.setClass(MainActivity.this, NextActivity.class);//setClass(本頁,要去的那一頁.class)
startActivity(intent);//真正行動了
}
});
}
// @Override //不用匿名方法的話
// public void onClick(View v) {
// Intent intent=new Intent();
// intent.setClass(this,NextActivity.class);
// startActivity(intent);
// }
}
第二頁轉回第一頁的程式:
package com.iii.lcpan.activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
/**
* Created by Student on 2016/6/23.
*/
public class NextActivity extends AppCompatActivity {//implements View.OnClickListener
private Button btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.next);
btn = (Button) findViewById(R.id.button2);
// btn.setOnClickListener(this);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
finish();
回到上一頁不需要再創造一個activity,所以直接用finish關掉第二頁就好,自然會回到第一頁去
}
});
}
// @Override
// public void onClick(View v) {
//// Intent intent=new Intent();
//// intent.setClass(this,MainActivity.class);
//// startActivity(intent);
// finish();
// }
}
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