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

//创建电话管理TelephonyManager tm = (TelephonyManager)//与手机建立连接
activity.getSystemService(Context.TELEPHONY_SERVICE);//获取手机号码String phoneId = tm.getLine1Number();//记得在manifest file中添加<uses-permission
android:name="android.permission.READ_PHONE_STATE" />//程序在模拟器上无法实现，必须连接手机

// 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);

/** 全屏设置，隐藏窗口所有装饰 */
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);

<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>

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

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

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

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;
}

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);
}

Intent i = new Intent(Intent.ACTION_SEND);
//i.setType("text/plain"); //模拟器请使用这行
i.setType("message/rfc822") ; // 真机上使用这行
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."));

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

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

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;
}

/** 获取存储卡路径 */
File sdcardDir=Environment.getExternalStorageDirectory();
/** StatFs 看文件系统空间使用情况 */
StatFs statFs=new StatFs(sdcardDir.getPath());
/** Block 的 size*/
Long blockSize=statFs.getBlockSize();
/** 总 Block 数量 */
Long totalBlocks=statFs.getBlockCount();
/** 已使用的 Block 数量 */
Long availableBlocks=statFs.getAvailableBlocks(); 

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;
}

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