Google Android SDK开发范例大全 源码1.rar

package irdc.ex05_17; import android.app.Activity; import android.content.Context; import android.net.wifi.WifiManager; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.CheckBox; import android.widget.TextView; import android.widget.Toast; public class EX05_17 extends Activity { private TextView mTextView01; private CheckBox mCheckBox01; /* 建立WiFiManager物件 */ private WifiManager mWiFiManager01; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mTextView01 = (TextView) findViewById(R.id.myTextView1); mCheckBox01 = (CheckBox) findViewById(R.id.myCheckBox1); /* 以getSystemService取得WIFI_SERVICE */ mWiFiManager01 = (WifiManager) this.getSystemService(Context.WIFI_SERVICE); /* 判斷執行程式後的WiFi狀態是否開啟或開啟中 */ if(mWiFiManager01.isWifiEnabled()) { /* 判斷WiFi狀態是否「已開啟」 */ if(mWiFiManager01.getWifiState()==WifiManager.WIFI_STATE_ENABLED) { /* 若WiFi已開啟，將核取項打勾 */ mCheckBox01.setChecked(true); /* 變更核取項文字為關閉WiFi*/ mCheckBox01.setText(R.string.str_uncheck); } else { /* 若WiFi未開啟，將核取項勾選取消 */ mCheckBox01.setChecked(false); /* 變更核取項文字為開啟WiFi*/ mCheckBox01.setText(R.string.str_checked); } } else { mCheckBox01.setChecked(false); mCheckBox01.setText(R.string.str_checked); } /* 捕捉CheckBox的點擊事件 */ mCheckBox01.setOnClickListener(new CheckBox.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub /* 當核取項為取消核取狀態 */ if(mCheckBox01.isChecked()==false) { /* 嘗試關閉Wi-Fi服務 */ try { /* 判斷WiFi狀態是否為已開啟 */ if(mWiFiManager01.isWifiEnabled() ) { /* 關閉WiFi */ if(mWiFiManager01.setWifiEnabled(false)) { mTextView01.setText(R.string.str_stop_wifi_done); } else { mTextView01.setText(R.string.str_stop_wifi_failed); } } else { /* WiFi狀態不為已開啟狀態時 */ switch(mWiFiManager01.getWifiState()) { /* WiFi正在開啟過程中，導致無法關閉... */ case WifiManager.WIFI_STATE_ENABLING: mTextView01.setText ( getResources().getText(R.string.str_stop_wifi_failed)+":"+ getResources().getText(R.string.str_wifi_enabling) ); break; /* WiFi正在關閉過程中，導致無法關閉... */ case WifiManager.WIFI_STATE_DISABLING: mTextView01.setText ( getResources().getText(R.string.str_stop_wifi_failed)+":"+ getResources().getText(R.string.str_wifi_disabling) ); break; /* WiFi已經關閉 */ case WifiManager.WIFI_STATE_DISABLED: mTextView01.setText ( getResources().getText(R.string.str_stop_wifi_failed)+":"+ getResources().getText(R.string.str_wifi_disabled) ); break; /* 無法取得或辨識WiFi狀態 */ case WifiManager.WIFI_STATE_UNKNOWN: default: mTextView01.setText ( getResources().getText(R.string.str_stop_wifi_failed)+":"+ getResources().getText(R.string.str_wifi_unknow) ); break; } mCheckBox01.setText(R.string.str_checked); } } catch (Exception e) { Log.i("HIPPO", e.toString()); e.printStackTrace(); } } else if(mCheckBox01.isChecked()==true) { /* 嘗試開啟Wi-Fi服務 */ try { /* 確認WiFi服務是關閉且不在開啟作業中 */ if(!mWiFiManager01.isWifiEnabled() && mWiFiManager01.getWifiState()!=WifiManager.WIFI_STATE_ENABLING ) { if(mWiFiManager01.setWifiEnabled(true)) { switch(mWiFiManager01.getWifiState()) { /* WiFi正在開啟過程中，導致無法開啟... */ case WifiManager.WIFI_STATE_ENABLING: mTextView01.setText ( getResources().getText(R.string.str_wifi_enabling) ); break; /* WiFi已經為開啟，無法再次開啟... */ case WifiManager.WIFI_STATE_ENABLED: mTextView01.setText ( getResources().getText(R.string.str_start_wifi_done) ); break; /* 其他未知的錯誤 */ default: mTextView01.setText ( getResources().getText(R.string.str_start_wifi_failed)+":"+ getResources().getText(R.string.str_wifi_unknow) ); break; } } else { mTextView01.setText(R.string.str_start_wifi_failed); } } else { switch(mWiFiManager01.getWifiState()) { /* WiFi正在開啟過程中，導致無法開啟... */ case WifiManager.WIFI_STATE_ENABLING: mTextView01.setText ( getResources().getText(R.string.str_start_wifi_failed)+":"+ getResources().getText(R.string.str_wifi_enabling) ); break; /* WiFi正在關閉過程中，導致無法開啟... */ case WifiManager.WIFI_STATE_DISABLING: mTextView01.setText ( getResources().getText(R.string.str_start_wifi_failed)+":"+ getResources().getText(R.string.str_wifi_disabling) ); break; /* WiFi已經關閉 */ case WifiManager.WIFI_STATE_DISABLED: mTextView01.setText ( getResources().getText(R.string.str_start_wifi_failed)+":"+ getResources().getText(R.string.str_wifi_disabled) ); break; /* 無法取得或辨識WiFi狀態 */ case WifiManager.WIFI_STATE_UNKNOWN: default: mTextView01.setText ( getResources().getText(R.string.str_start_wifi_failed)+":"+ getResources().getText(R.string.str_wifi_unknow) ); break; } } mCheckBox01.setText(R.string.str_uncheck); } catch (Exception e) { Log.i("HIPPO", e.toString()); e.printStackTrace(); } } } }); } public void mMakeTextToast(String str, boolean isLong) { if(isLong==true) { Toast.makeText(EX05_17.this, str, Toast.LENGTH_LONG).show(); } else { Toast.makeText(EX05_17.this, str, Toast.LENGTH_SHORT).show(); } } @Override protected void onResume() { // TODO Auto-generated method stub /* 於onResume覆寫事件為取得開啟程式當下WiFi的狀�