Android開發常用經典程式碼片段集錦_Android

本文執行個體總結了Android開發常用經典程式碼片段。分享給大家供大家參考，具體如下：

1、圖片旋轉

Bitmap bitmapOrg = BitmapFactory.decodeResource(this.getContext().getResources(), R.drawable.moon);Matrix matrix = new Matrix();matrix.postRotate(-90);//旋轉的角度Bitmap resizedBitmap = Bitmap.createBitmap(bitmapOrg, 0, 0,          bitmapOrg.getWidth(), bitmapOrg.getHeight(), matrix, true);BitmapDrawable bmd = new BitmapDrawable(resizedBitmap);

2、擷取手機號碼

//建立電話管理TelephonyManager tm = (TelephonyManager)//與手機建立串連activity.getSystemService(Context.TELEPHONY_SERVICE);//擷取手機號碼String phoneId = tm.getLine1Number();//記得在manifest file中添加<uses-permissionandroid:name="android.permission.READ_PHONE_STATE" />//程式在模擬器上無法實現，必須串連手機

3.格式化string.xml 中的字串

// in strings.xml..<string name="my_text">Thanks for visiting %s. You age is %d!</string>// and in the java code:String.format(getString(R.string.my_text), "oschina", 33);

4、android設定全屏的方法

A.在java代碼中設定

/** 全屏設定，隱藏視窗所有裝飾 */requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,        WindowManager.LayoutParams.FLAG_FULLSCREEN);

B、在AndroidManifest.xml中配置

<activity android:name=".Login.NetEdit" android:label="@string/label_net_Edit"      android:screenOrientation="portrait" android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"> <intent-filter> <action android:name="android.intent.Net_Edit" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter></activity>

5、設定Activity為Dialog的形式

在AndroidManifest.xml中配置Activity節點是配置theme如下：

android:theme="@android:style/Theme.Dialog"

6、檢查當前網路是否連上

ConnectivityManager con=(ConnectivityManager)getSystemService(Activity.CONNECTIVITY_SERVICE);boolean wifi=con.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();boolean internet=con.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnectedOrConnecting();

在AndroidManifest.xml 增加許可權：

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

7、檢測某個Intent是否有效

public static boolean isIntentAvailable(Context context, String action) {  final PackageManager packageManager = context.getPackageManager();  final Intent intent = new Intent(action);  List<ResolveInfo> list =      packageManager.queryIntentActivities(intent,          PackageManager.MATCH_DEFAULT_ONLY);  return list.size() > 0;}

8、android 撥打到電話

try {  Intent intent = new Intent(Intent.ACTION_CALL);  intent.setData(Uri.parse("tel:+110"));  startActivity(intent);} catch (Exception e) {  Log.e("SampleApp", "Failed to invoke call", e);}

9、android中發送Email

Intent i = new Intent(Intent.ACTION_SEND);//i.setType("text/plain"); //模擬器請使用這行i.setType("message/rfc822") ; // 真機上使用這行i.putExtra(Intent.EXTRA_EMAIL, new String[]{"test@gmail.com","test@163.com});i.putExtra(Intent.EXTRA_SUBJECT,"subject goes here");i.putExtra(Intent.EXTRA_TEXT,"body goes here");startActivity(Intent.createChooser(i, "Select email application."));

10、android中開啟瀏覽器

Intent viewIntent = new  Intent("android.intent.action.VIEW",Uri.parse("http://vaiyanzi.cnblogs.com"));startActivity(viewIntent);

11、android 擷取裝置唯一標識碼

String android_id = Secure.getString(getContext().getContentResolver(), Secure.ANDROID_ID);

12、android中擷取IP地址

public String getLocalIpAddress() {  try {    for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {      NetworkInterface intf = en.nextElement();      for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {        InetAddress inetAddress = enumIpAddr.nextElement();        if (!inetAddress.isLoopbackAddress()) {          return inetAddress.getHostAddress().toString();        }      }    }  } catch (SocketException ex) {    Log.e(LOG_TAG, ex.toString());  }  return null;}

13、android擷取儲存卡路徑以及使用方式

/** 擷取儲存卡路徑 */File sdcardDir=Environment.getExternalStorageDirectory();/** StatFs 看檔案系統空間使用方式 */StatFs statFs=new StatFs(sdcardDir.getPath());/** Block 的 size*/Long blockSize=statFs.getBlockSize();/** 總 Block 數量 */Long totalBlocks=statFs.getBlockCount();/** 已使用的 Block 數量 */Long availableBlocks=statFs.getAvailableBlocks();

14 android中添加新的連絡人

private Uri insertContact(Context context, String name, String phone) {    ContentValues values = new ContentValues();    values.put(People.NAME, name);    Uri uri = getContentResolver().insert(People.CONTENT_URI, values);    Uri numberUri = Uri.withAppendedPath(uri, People.Phones.CONTENT_DIRECTORY);    values.clear();    values.put(Contacts.Phones.TYPE, People.Phones.TYPE_MOBILE);    values.put(People.NUMBER, phone);    getContentResolver().insert(numberUri, values);    return uri;}

15、查看電池使用方式

Intent intentBatteryUsage = new Intent(Intent.ACTION_POWER_USAGE_SUMMARY);startActivity(intentBatteryUsage);

16、擷取進程號

ActivityManager mActivityManager = (ActivityManager) this.getSystemService(ACTIVITY_SERVICE);List<ActivityManager.RunningAppProcessInfo> mRunningProcess = mActivityManager.getRunningAppProcesses();int i = 1;for (ActivityManager.RunningAppProcessInfo amProcess : mRunningProcess) { Log.e("homer Application", (i++) + " PID = " + amProcess.pid + "; processName = " + amProcess.processName);}

更多關於Android相關內容感興趣的讀者可查看本站專題：《Android開發入門與進階教程》、《Android控制項用法總結》、《Android簡訊與電話操作技巧匯總》及《Android多媒體操作技巧匯總(音頻,視頻,錄音等)》

希望本文所述對大家Android程式設計有所協助。