1.Activity跳轉與傳值

標籤：

1.跳轉：意圖的2種形式 class和action(intent-filter要加意圖過濾)，開啟Activity即可

2.傳值:意圖put/get值

3.日誌記錄:Log.i    i---info資訊記錄

 

Manifest.xml：資訊清單檔

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.manusas.activitydemo">    <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" android:label="@string/app_name">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <!--幾個Activity幾個配置-->        <activity android:name=".NextActivity" android:label="@string/app_name">            <intent-filter>                <action android:name="nextaction" />                <category android:name="android.intent.category.DEFAULT" />            </intent-filter>        </activity>    </application></manifest>

View Code

 

MainActivity.java

package com.manusas.activitydemo;import android.app.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 Activity {    private Button button;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        button = (Button) this.findViewById(R.id.button);        button.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                //1跳轉                // 方法一二 根據意圖Class                //方法一 最常用               Intent i = new Intent(MainActivity.this, NextActivity.class);                //方法二//                Intent i = new Intent();//                i.setClass(MainActivity.this, NextActivity.class);                // 方法三四 根據意圖Action 在資訊清單檔裡面activity裡面<intent-filter>一定要定義action名                //方法三                //Intent i = new Intent("nextaction");                //方法四//                Intent i = new Intent();//                i.setAction("nextaction");                //2傳值                i.putExtra("name","liang");                i.putExtra("age",40);                Bundle bundle=new Bundle();                bundle.putString("nickname","manusas");                i.putExtra("bundle",bundle);                startActivity(i);            }        });    }}

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NextActivity.java

package com.manusas.activitydemo;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.Button;public class NextActivity extends Activity {    public static final String TAG = "tag";    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_next);        //1取值        Intent i = getIntent();        String name = i.getStringExtra("name");        int age = i.getIntExtra("age", 0);        Bundle bundle = i.getBundleExtra("bundle");        String nickname = bundle.getString("nickname");        Log.i(TAG, name + nickname + age);    }}

View Code

 

activity_main.xml：首頁

<?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.manusas.activitydemo.MainActivity">    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Next"        android:id="@+id/button"        android:layout_alignParentTop="true"        android:layout_alignParentStart="true" /></RelativeLayout>

View Code

 

activity_next.xml：跳轉頁

<?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.manusas.activitydemo.MainActivity">    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Ok"        android:id="@+id/textView"        android:layout_alignParentTop="true"        android:layout_alignParentStart="true" /></RelativeLayout>

View Code

 

1.Activity跳轉與傳值