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2014年3月12日 星期三

[android]利用Gps或網路訊號取的經緯度

請先在AndroidManifest.xml設定權限
開啟AndroidManifest.xml,並且在</application>後面加入<uses-permission...>的權限。INTERNET是網路權限,ACCESS_FINE_LOCATION是GPS權限,ACCESS_COARSE_LOCATION是網路定位。
1.允許使用網路權限
<uses-permission android:name="android.permission.INTERNET">
2.允許使用GPS權限
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION">
3.允許使用網路定位權限
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission></uses-permission>
GetLocation.xml程式如下:







以必需使用LocationListener來傾聽位置的變化。開啟Java檔案,在class後面加入"implements LocationListener"實作介面,並且根據指示增加實作方法,產生的完整程式碼如下:
GetLocation.javal程式如下:


package com.ttmac.getlocation;

import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.view.Menu;
import android.widget.TextView;
import android.widget.Toast;
public class GetLocation extends Activity  implements LocationListener {
 private TextView mTextView01,longitude_txt,latitude_txt;
 private boolean getService = false;     //是否已開啟定位服務
private LocationManager lms;
private Location location;
private String bestProvider = LocationManager.GPS_PROVIDER;


  @Override
  protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_get_location);
        
        mTextView01 = (TextView)findViewById(R.id.textView1);
    longitude_txt = (TextView) findViewById(R.id.textView2);
        latitude_txt = (TextView) findViewById(R.id.textView3);
           
 //取得系統定位服務
     LocationManager status = (LocationManager) (this.getSystemService(Context.LOCATION_SERVICE));
if(status.isProviderEnabled(LocationManager.GPS_PROVIDER)|| status.isProviderEnabled(LocationManager.NETWORK_PROVIDER))
{
                  //如果GPS或網路定位開啟,呼叫locationServiceInitial()更新位置
                  locationServiceInitial();
     } else {
              Toast.makeText(this, "請開啟定位服務", Toast.LENGTH_LONG).show();
              getService = true; //確認開啟定位服務
              startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS)); //開啟設定頁面
         }
     } // onCreate

     private void locationServiceInitial() {
         lms = (LocationManager) getSystemService(LOCATION_SERVICE); //取得系統定位服務
         /*做法一,由程式判斷用GPS_provider
           if (lms.isProviderEnabled(LocationManager.GPS_PROVIDER) ) {
               location = lms.getLastKnownLocation(LocationManager.GPS_PROVIDER);  //使用GPS定位座標
         }
         else if ( lms.isProviderEnabled(LocationManager.NETWORK_PROVIDER))
         { location = lms.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); //使用GPS定位座標
         }
         else {}*/
         // 做法二,由Criteria物件判斷提供最準確的資訊
         Criteria criteria = new Criteria();  //資訊提供者選取標準
         bestProvider = lms.getBestProvider(criteria, true);    //選擇精準度最高的提供者
         Location location = lms.getLastKnownLocation(bestProvider);
             
         getLocation(location);
     }
    
     private void getLocation(Location location) { //將定位資訊顯示在畫面中
         if(location != null) {
              Double longitude = location.getLongitude();   //取得經度
              Double latitude = location.getLatitude();     //取得緯度
              longitude_txt.setText(String.valueOf(longitude));
              latitude_txt.setText(String.valueOf(latitude));
         }
         else {
              Toast.makeText(this, "無法定位座標", Toast.LENGTH_LONG).show();
         }
     }

     @Override
     public void onLocationChanged(Location location) {  //當地點改變時
         // TODO 自動產生的方法 Stub
         getLocation(location);
     }
     @Override
     public void onProviderDisabled(String arg0) {//當GPS或網路定位功能關閉時
         // TODO 自動產生的方法 Stub
         Toast.makeText(this, "請開啟gps或3G網路", Toast.LENGTH_LONG).show();
     }
     @Override
     public void onProviderEnabled(String arg0) { //當GPS或網路定位功能開啟
         // TODO 自動產生的方法 Stub
     }
     @Override
     public void onStatusChanged(String arg0, int arg1, Bundle arg2) { //定位狀態改變
         // TODO 自動產生的方法 Stub
     }
     @Override
     protected void onResume() {
         // TODO Auto-generated method stub
         super.onResume();
         if(getService) {
              lms.requestLocationUpdates(bestProvider, 1000, 1, this);
              //服務提供者、更新頻率60000毫秒=1分鐘、最短距離、地點改變時呼叫物件
         }
     }
     @Override
     protected void onPause() {
         // TODO Auto-generated method stub
         super.onPause();
         if(getService) {
              lms.removeUpdates(this);   //離開頁面時停止更新
         }
     }
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.
         getMenuInflater().inflate(R.menu.get_location, menu);
         return true;
     }
}

Reference
http://www.moke.tw/wordpress/computer/advanced/279

[android]Intent總整理

顯示網頁
Uri uri = Uri.parse("http://google.com"); 
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(it); 
顯示地圖
Uri uri = Uri.parse("geo:38.899533,-77.036476"); 
Intent it = new Intent(Intent.ACTION_VIEW, uri);  
startActivity(it);  
//其他 geo URI 範例 
//geo:latitude,longitude 
//geo:latitude,longitude?z=zoom 
//geo:0,0?q=my+street+address 
//geo:0,0?q=business+near+city 
//google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapZoom 
路徑規劃
Uri uri = Uri.parse("http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en"); 
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(it); 
//where startLat, startLng, endLat, endLng are a long with 6 decimals like: 50.123456  
撥打電話
//叫出撥號程式 
Uri uri = Uri.parse("tel:0800000123"); 
Intent it = new Intent(Intent.ACTION_DIAL, uri); 
startActivity(it); 
//直接打電話出去 
Uri uri = Uri.parse("tel:0800000123"); 
Intent it = new Intent(Intent.ACTION_CALL, uri); 
startActivity(it); 
//用這個,要在 AndroidManifest.xml 中,加上 
//<uses-permission id="android.permission.CALL_PHONE" /> 
傳送 SMS/MMS
//叫起簡訊程式 
Intent it = new Intent(Intent.ACTION_VIEW); 
it.putExtra("sms_body", "The SMS text");  
it.setType("vnd.android-dir/mms-sms"); 
startActivity(it); 
//傳送簡訊 
Uri uri = Uri.parse("smsto:0800000123"); 
Intent it = new Intent(Intent.ACTION_SENDTO, uri); 
it.putExtra("sms_body", "The SMS text"); 
startActivity(it); 
//傳送 MMS 
Uri uri = Uri.parse("content://media/external/images/media/23"); 
Intent it = new Intent(Intent.ACTION_SEND);  
it.putExtra("sms_body", "some text");  
it.putExtra(Intent.EXTRA_STREAM, uri); 
it.setType("image/png");  
startActivity(it); 
 
//如果是 HTC Sense 手機,你要用 
Intent sendIntent = new Intent("android.intent.action.SEND_MSG");   
sendIntent.putExtra("address", toText);   
sendIntent.putExtra(Intent.EXTRA_SUBJECT, "subject");  
sendIntent.putExtra("sms_body", textMessage);   
sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(url));  
sendIntent.setType("image/jpeg");   
startActivity(sendIntent); 
 
//底下這段更好,可在所有手機上用 
//refer to http://stackoverflow.com/questions/2165516/sending-mms-into-different-android-devices 
Intent intent = new Intent(Intent.ACTION_SENDTO, Uri.parse("mmsto:<number>");  
intent.putExtra("address", <number>);  
intent.putExtra("subject", <subject>);  
startActivity(intent);
傳送 Email
Uri uri = Uri.parse("mailto:xxx@abc.com"); 
Intent it = new Intent(Intent.ACTION_SENDTO, uri); 
startActivity(it); 
Intent it = new Intent(Intent.ACTION_SEND); 
it.putExtra(Intent.EXTRA_EMAIL, "me@abc.com"); 
it.putExtra(Intent.EXTRA_TEXT, "The email body text"); 
it.setType("text/plain"); 
startActivity(Intent.createChooser(it, "Choose Email Client")); 
Intent it=new Intent(Intent.ACTION_SEND);   
String[] tos={"me@abc.com"};   
String[] ccs={"you@abc.com"};   
it.putExtra(Intent.EXTRA_EMAIL, tos);   
it.putExtra(Intent.EXTRA_CC, ccs);   
it.putExtra(Intent.EXTRA_TEXT, "The email body text");   
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");   
it.setType("message/rfc822");   
startActivity(Intent.createChooser(it, "Choose Email Client"));  
//傳送影音附件檔 
Intent it = new Intent(Intent.ACTION_SEND); 
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text"); 
it.putExtra(Intent.EXTRA_STREAM, Uri.parse("file:///sdcard/mysong.mp3")); 
it.setType("audio/mp3"); 
startActivity(Intent.createChooser(it, "Choose Email Client")); 
//傳送圖片附件檔 
Intent it = new Intent(Intent.ACTION_SEND); 
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text"); 
it.putExtra(Intent.EXTRA_STREAM, Uri.parse("file:///sdcard/mypic.jpg")); 
it.setType("image/jpeg"); 
startActivity(Intent.createChooser(it, "Choose Email Client")); 
顯示聯絡人清單
Intent it = new Intent(Intent.ACTION_VIEW, People.CONTENT_URI); 
startActivity(it); 
顯示某個朋友的詳細資料
Uri uriPerson = ContentUris.withAppendedId(People.CONTENT_URI, 5); //5 是朋友的 ID 
Intent it = new Intent(Intent.ACTION_VIEW, uriPerson); 
startActivity(it); 
播放多媒體
Intent it = new Intent(Intent.ACTION_VIEW); 
Uri uri = Uri.parse("file:///sdcard/song.mp3"); 
it.setDataAndType(uri, "audio/mp3"); 
startActivity(it); 
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1"); 
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(it); 
從圖庫中回傳選到的圖片
Intent it = new Intent(Intent.ACTION_GET_CONTENT);   
it.addCategory(Intent.CATEGORY_OPENABLE);   
it.setType("image/*"); 
startActivityForResult(it, 0); 
//回傳的圖片可透過 it.getData() 取得圖片之 Uri 
啟動照相機,並將相片存在指定的檔案中
Intent it = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);   
//假設你要將相片存在 /sdcard/xxx.jpg 中 
File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/xxx.jpg"); 
it.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));  
startActivity(it, 0); 
Market 相關
//尋找某個應用程式 
Uri uri = Uri.parse("market://search?q=pname:pkg_name"); 
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(it); 
//where pkg_name is the full package path for an application 
//顯示某應用程式詳細畫面 
Uri uri = Uri.parse("market://details?id=pkg_name_or_app_id"); pkg可至google play找APP並在網址列從details複製
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(it); 
//where app_id is the application ID, find the ID  
//by clicking on your application on Market home  
//page, and notice the ID from the address bar 
Uninstall 應用程式
Uri uri = Uri.fromParts("package", strPackageName, null);  
Intent it = new Intent(Intent.ACTION_DELETE, uri);  
startActivity(it);  

從圖庫中回傳選到的圖片
Intent it = new Intent(Intent.ACTION_GET_CONTENT);   
it.addCategory(Intent.CATEGORY_OPENABLE);   
it.setType("image/*"); 
startActivityForResult(it, 0); 
//回傳的圖片可透過 it.getData() 取得圖片之 Uri 
啟動照相機,並將相片存在指定的檔案中
Intent it = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);   
//假設你要將相片存在 /sdcard/xxx.jpg 中 
File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/xxx.jpg"); 
it.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));  
startActivity(it, 0); 
Market 相關
//尋找某個應用程式 
Uri uri = Uri.parse("market://search?q=pname:pkg_name"); 
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(it); 
//where pkg_name is the full package path for an application 
//顯示某應用程式詳細畫面 
Uri uri = Uri.parse("market://details?id=pkg_name_or_app_id"); pkg可至google play找APP並在網址列從details複製
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(it); 
//where app_id is the application ID, find the ID  
//by clicking on your application on Market home  
//page, and notice the ID from the address bar 
Uninstall 應用程式
Uri uri = Uri.fromParts("package", strPackageName, null);  
Intent it = new Intent(Intent.ACTION_DELETE, uri);  
startActivity(it);  
安裝 APK 檔
Uri uri = Uri.parse("url_of_apk_file"); 
Intent it = new Intent(Intent.ACTION_VIEW, uri); 
it.setData(uri); 
it.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); 
it.setClassName("com.android.packageinstaller", 
                "com.android.packageinstaller.PackageInstallerActivity"); 
startActivity(it);  
//make sure the url_of_apk_file is readable for all users  



Reference:

2014年2月27日 星期四

[android]實作android開機程式

//開機時自動開啟程式,利用補捉,開機廣播來完成
//1.androidManifest要加參數
//2.new HippoStartupIntentReceiver class
//3.new mainactivity class 

Part 1.androidManifest 
接著在AndroidManifest.xml裡面新加入receiver
注意:receiver放的類別名稱是BroadcastReceiver子類別的名稱。
Android在開機的時候,會送出android.intent.action.BOOT_COMPLETED這個廣播訊息,
因此只要設定好了,一開機就會執行指定的Activity。
----------------------------------------------------------------------------------------------------------------------
       <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.startupintentreceiver"
     android:versionCode="1"
     android:versionName="1.0" >
   
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.startupintentreceiver.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>
        <!-- 指派receiver名稱為類別名稱-->
        <receiver android:name="HippoStartupIntentReceiver">
            <!-- 在filter裡設定Boot_COMPLETED為要捕捉的訊息 -->
            <intent-filter >
                <action android:name="android.intent.action.BOOT_COMPLETED"/>
                <category android:name="android.intent.category.HOME"/>
            </intent-filter>
        </receiver>
    </application>

Part 2.new HippoStartupIntentReceiver class
接著寫一支BroadcastReceiver的子類別,並且覆寫onReceive這個方法,
----------------------------------------------------------------------------------------------------------------------
在同一個package下新增一個receiver class
//開機系統會發出android.intent.action.BOOT_COMPLETED的廣撥息訊,所以會用下列列Class
package com.example.startupintentreceiver;
import com.example.startupintentreceiver.MainActivity;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;


public class HippoStartupIntentReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
/*當收到receiver時,指定開啟此程式(MainActivity.class)*/
Intent mBootIntent=new Intent(context,MainActivity.class);
/*設定intent開啟為FLAG_ACTIVITY_NEW_TASK*/
mBootIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
/*將intent以startActivity傳送給作業系統*/
context.startActivity(mBootIntent);

}

}
----------------------------------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------------------------------
Part 3. new mainactivity class
寫一支一般的應用程式,
package com.example.startupintentreceiver;
//開機時自動開啟程式,利用補捉,開機廣播來完成
//1.androidManifest要加參數
//2.new HippoStartupIntentReceiver class
//3.new mainactivity class 
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}