1：查看是否有存储卡插入
String status=Environment.getExternalStorageState();
if
(status.equals(Enviroment.MEDIA_MOUNTED))
{
;
//说明有SD卡插入
}
在OnCreate 中不设Layout,然后this.setTheme(R.style.Theme_Transparent);
3：获取屏幕宽高
DisplayMetrics dm =
new
DisplayMetrics();
//获取窗口属性
getWindowManager().getDefaultDisplay().getMetrics(dm);
int
screenWidth = dm.widthPixels;
int
screenHeight = dm.heightPixels;
4:发送短信
String body=”
this
is mms demo”;
Intent mmsIntent =
new
Intent(Intent.ACTION_SENDTO, Uri.fromParts(”smsto”, number,
null
));
mmsIntent.putExtra(Messaging.KEY_ACTION_SENDTO_MESSAGE_BODY, body);
mmsIntent.putExtra(Messaging.KEY_ACTION_SENDTO_COMPOSE_MODE,
true
);
mmsIntent.putExtra(Messaging.KEY_ACTION_SENDTO_EXIT_ON_SENT,
true
);
startActivity(mmsIntent);
5:发送彩信
StringBuilder sb =
new
StringBuilder();
sb.append(”file:
//”);
sb.append(fd.getAbsoluteFile());
Intent intent =
new
Intent(Intent.ACTION_SENDTO, Uri.fromParts(”mmsto”, number,
null
));
// Below extra datas are all optional.
intent.putExtra(Messaging.KEY_ACTION_SENDTO_MESSAGE_SUBJECT, subject);
intent.putExtra(Messaging.KEY_ACTION_SENDTO_MESSAGE_BODY, body);
intent.putExtra(Messaging.KEY_ACTION_SENDTO_CONTENT_URI, sb.toString());
intent.putExtra(Messaging.KEY_ACTION_SENDTO_COMPOSE_MODE, composeMode);
intent.putExtra(Messaging.KEY_ACTION_SENDTO_EXIT_ON_SENT, exitOnSent);
startActivity(intent);
6：发送Mail
mime = “img/jpg”;
shareIntent.setDataAndType(Uri.fromFile(fd), mime);
shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(fd));
shareIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
shareIntent.putExtra(Intent.EXTRA_TEXT, body);
7:注册一个 BroadcastReceiver
registerReceiver(mMasterResetReciever,
new
IntentFilter(”oms.action.MASTERRESET”));
private
BroadcastReceiver mMasterResetReciever =
new
BroadcastReceiver() {
public
void
onReceive(Context context, Intent intent){
String action = intent.getAction();
if
(”oms.action.MASTERRESET”.equals(action)){
RecoverDefaultConfig();
}
}
};
8:定义ContentObserver，监听某个数据表
private
ContentObserver mDownloadsObserver =
new
DownloadsChangeObserver(Downloads.CONTENT_URI);
private
class
DownloadsChangeObserver
extends
ContentObserver {
public
DownloadsChangeObserver(Uri uri) {
super
(
new
Handler());
}
@Override
public
void
onChange(
boolean
selfChange) {｝
}
9:获得 手机UA
public
String getUserAgent() {
String user_agent = ProductProperties.get(ProductProperties.USER_AGENT_KEY,
null
);
return
user_agent;
}
10：清空手机上Cookie
CookieSyncManager.createInstance(getApplicationContext());
CookieManager.getInstance().removeAllCookie();
|
11：建立GPRS 连接
private
boolean
openDataConnection() {
DataConnection conn = DataConnection.getInstance();
if
(connectMode ==
0
) {
ret = conn.openConnection(mContext, “cmwap”, “cmwap”, “cmwap”);
}
else
{
ret = conn.openConnection(mContext, “cmnet”, “”, “”);
}
}
12：PreferenceActivity 用法
public
class
Setting
extends
PreferenceActivity｛
public
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.settings)；
}
｝
|
Setting.xml:
android:key=”seting2″
android:title=”@string/seting2″
android:summary=”@string/seting2″/>
android:key=”seting1″
android:title=”@string/seting1″
android:summaryOff=”@string/seting1summaryOff”
android:summaryOn=”@stringseting1summaryOff”/>
|
13:通过 HttpClient从指定server获取数据
DefaultHttpClient httpClient =
new
DefaultHttpClient();
HttpGet method =
new
HttpGet(“http:
//www.baidu.com/1.html”);
HttpResponse resp;
Reader reader =
null
;
try
{
// AllClientPNames.TIMEOUT
HttpParams params =
new
BasicHttpParams();
params.setIntParameter(AllClientPNames.CONNECTION_TIMEOUT,
10000
);
httpClient.setParams(params);
resp = httpClient.execute(method);
int
status = resp.getStatusLine().getStatusCode();
if
(status != HttpStatus.SC_OK)
return
false
;
// HttpStatus.SC_OK;
return
true
;
}
catch
(ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch
(IOException e) {
// TODO Auto-generated catch block e.printStackTrace();
}
finally
{
if
(reader !=
null
)
try
{
reader.close();
}
catch
(IOException e) {
// TODO Auto-generated
catch
block e.printStackTrace();
}
}