Andriod 手機控制 Powerpoint 演示(客戶端)
阿新 • • 發佈：2019-01-03
Andriod PPT控制客戶端主要思路
連線WCF公佈的服務，通過Request，獲取服務端資訊以及傳送資訊。
主要類
WebDataHelper--實現WCF 訪問，包含收發資料（JSON格式）
package JHKJ.homeplay; import java.io.IOException; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.BasicHttpParams; import org.apache.http.protocol.HTTP; import org.json.JSONStringer; import android.util.Log; public class WebDataHelper { private static final String TAG = "WebDataGetAPI"; private static final String USER_AGENT = "Mozilla/4.5"; protected String getRequest(String url) throws Exception { return getRequest(url, new DefaultHttpClient(new BasicHttpParams())); } protected String getRequest(String url, DefaultHttpClient client) throws Exception { String result = null; int statusCode = 0; HttpGet getMethod = new HttpGet(url); Log.d(TAG, "do the getRequest,url=" + url + ""); try { getMethod.setHeader("User-Agent", USER_AGENT); // HttpParams params = new HttpParams(); // 新增使用者密碼驗證資訊 // client.getCredentialsProvider().setCredentials( // new AuthScope(null, -1), // new UsernamePasswordCredentials(mUsername, mPassword)); HttpResponse httpResponse = client.execute(getMethod); // statusCode == 200 正常 statusCode = httpResponse.getStatusLine().getStatusCode(); Log.d(TAG, "statuscode = " + statusCode); // 處理返回的httpResponse資訊 result = retrieveInputStream(httpResponse.getEntity()); } catch (Exception e) { Log.e(TAG, e.getMessage()); throw new Exception(e); } finally { getMethod.abort(); } return result; } public String Baserequest(String url,String Command) throws Exception { int statusCode = 0; String result = null; Log.i(TAG, "UTL的長度：" + url.length()); Log.i(TAG, "URL：" + url); HttpClient client = new DefaultHttpClient(); HttpPost request = new HttpPost(url); try { request.setHeader("Accept", "application/json"); request.setHeader("Content-type", "application/json"); JSONStringer json = new JSONStringer() .object() .key("Message").value(Command) .endObject(); StringEntity entity = new StringEntity(json.toString(),"UTF-8"); request.setEntity(entity); HttpResponse httpResponse = client.execute(request); statusCode = httpResponse.getStatusLine().getStatusCode(); Log.i(TAG, "statusCode===============" + statusCode); if (statusCode == 200) { // 處理返回的httpResponse資訊 result = retrieveInputStream(httpResponse.getEntity()); } } catch(Exception e) { Log.e(TAG, e.getMessage()); } return result; } /** * 處理httpResponse資訊,返回String * * @param httpEntity * @return String */ protected String retrieveInputStream(HttpEntity httpEntity) { int length = (int) httpEntity.getContentLength(); if (length < 0) length = 10000; StringBuffer stringBuffer = new StringBuffer(length); try { InputStreamReader inputStreamReader = new InputStreamReader( httpEntity.getContent(), HTTP.UTF_8); char buffer[] = new char[length]; int count; while ((count = inputStreamReader.read(buffer, 0, length - 1)) > 0) { stringBuffer.append(buffer, 0, count); } } catch (UnsupportedEncodingException e) { Log.e(TAG, e.getMessage()); } catch (IllegalStateException e) { Log.e(TAG, e.getMessage()); } catch (IOException e) { Log.e(TAG, e.getMessage()); } return stringBuffer.toString(); } }
WCFJsonDataHelper 對於WCF 服務訪問的封裝繼承WebDataHelper
package JHKJ.homeplay; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; public class WCFJsonDataHelper extends WebDataHelper { private static String BASE_URL = ""; public static String getBASE_URL() { return "http://"+BASE_URL+":8089/"; } public static void setBASE_URL(String bASE_URL) { BASE_URL = bASE_URL; } private static final String EXTENSION = "Json/";; public JSONObject getObject(String sbj) throws JSONException, Exception { return new JSONObject(getRequest(getBASE_URL() + EXTENSION + sbj)); } public String getString(String sbj) throws JSONException, Exception { return new String(getRequest(getBASE_URL() + EXTENSION + sbj).toString()); } public JSONArray getArray(String sbj) throws JSONException, Exception { return new JSONArray(getRequest(getBASE_URL() + EXTENSION + sbj)); } public String SendCommand(String sbj, String CommandString) throws JSONException, Exception { return new String(Baserequest((getBASE_URL() + EXTENSION + sbj), CommandString).toString()); } }
HomePlayActivity --介面邏輯，也就定義幾個按鈕，呼叫上面的WCF通訊類，傳送訊息而已。
package JHKJ.homeplay; import org.json.JSONException; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.SharedPreferences.Editor; import android.os.Bundle; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class HomePlayActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); if (InitSetting()) { getJsonData(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.menu, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle item selection switch (item.getItemId()) { case R.id.new_game: Intent intent = new Intent(); intent.setClass(HomePlayActivity.this, settingActivity.class); HomePlayActivity.this.startActivity(intent); return true; default: return super.onOptionsItemSelected(item); } } private Boolean InitSetting() { // TODO Auto-generated method stub SharedPreferences sp = getSharedPreferences("preferences", Context.MODE_PRIVATE); String DefautlServer = sp.getString("Server", ""); if (DefautlServer == "") { Toast toast = Toast.makeText(getApplicationContext(), "伺服器地址為空,請配置伺服器!", Toast.LENGTH_LONG);// 提示被點選了 toast.show(); return false; } else { WCFJsonDataHelper.setBASE_URL(DefautlServer); return true; } } Button btnPrevButton; Button btnNextButton; Button btnFristButton; Button btnLastButton; public void getJsonData() { WCFJsonDataHelper api = new WCFJsonDataHelper(); try { // 呼叫GetAccountData方法 String stateString = api.getString("GetServerState"); ((TextView) findViewById(R.id.ServerState)).setText(stateString); btnFristButton = (Button) this.findViewById(R.id.btnFirst); btnFristButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { WCFJsonDataHelper api = new WCFJsonDataHelper(); try { api.SendCommand("SendMessageJson", "First"); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } Toast toast = Toast.makeText(getApplicationContext(), "已發訊息", Toast.LENGTH_LONG);// 提示被點選了 toast.show(); } }); btnLastButton = (Button) this.findViewById(R.id.btnLast); btnLastButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { WCFJsonDataHelper api = new WCFJsonDataHelper(); try { api.SendCommand("SendMessageJson", "Last"); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } Toast toast = Toast.makeText(getApplicationContext(), "已發訊息", Toast.LENGTH_LONG);// 提示被點選了 toast.show(); } }); btnPrevButton = (Button) this.findViewById(R.id.btnPerv); btnPrevButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { WCFJsonDataHelper api = new WCFJsonDataHelper(); try { api.SendCommand("SendMessageJson", "Perv"); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } Toast toast = Toast.makeText(getApplicationContext(), "已發訊息", Toast.LENGTH_LONG);// 提示被點選了 toast.show(); } }); btnNextButton = (Button) this.findViewById(R.id.btnNext); btnNextButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { WCFJsonDataHelper api = new WCFJsonDataHelper(); try { api.SendCommand("SendMessageJson", "Next"); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } Toast toast = Toast.makeText(getApplicationContext(), "已發訊息", Toast.LENGTH_LONG);// 提示被點選了 toast.show(); } }); } catch (Exception e) { Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show(); e.printStackTrace(); } } }
客戶端這邊講起來比較雜亂，核心程式碼就是上面這些。
單執行PPT演示時候，外掛即可執行啟動WCF服務。
客戶端執行，如下，點選相應按鈕，即可傳送訊息至伺服器。
