public class AbAppUtil {
/**
* 描述：打开并安装文件.
*
* @param context the context
* @param file apk文件路径
*/
public static void installApk(Context context, File file) {
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction(android.content.Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file),
"application/vnd.android.package-archive");
context.startActivity(intent);
}
/**
* 描述：卸载程序.
*
* @param context the context
* @param packageName 包名
*/
public static void uninstallApk(Context context,String packageName) {
Intent intent = new Intent(Intent.ACTION_DELETE);
Uri packageURI = Uri.parse("package:" + packageName);
intent.setData(packageURI);
context.startActivity(intent);
}
/**
* 用来判断服务是否运行.
*
* @param ctx the ctx
* @param className 判断的服务名字 "com.xxx.xx..XXXService"
* @return true 在运行 false 不在运行
*/
public static boolean isServiceRunning(Context ctx, String className) {
boolean isRunning = false;
ActivityManager activityManager = (ActivityManager) ctx.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningServiceInfo> servicesList = activityManager.getRunningServices(Integer.MAX_VALUE);
Iterator<RunningServiceInfo> l = servicesList.iterator();
while (l.hasNext()) {
RunningServiceInfo si = (RunningServiceInfo) l.next();
if (className.equals(si.service.getClassName())) {
isRunning = true;
}
}
return isRunning;
}
/**
* 停止服务.
*
* @param ctx the ctx
* @param className the class name
* @return true, if successful
*/
public static boolean stopRunningService(Context ctx, String className) {
Intent intent_service = null;
boolean ret = false;
try {
intent_service = new Intent(ctx, Class.forName(className));
} catch (Exception e) {
e.printStackTrace();
}
if (intent_service != null) {
ret = ctx.stopService(intent_service);
}
return ret;
}
/**
* Gets the number of cores available in this device, across all processors.
* Requires: Ability to peruse the filesystem at "/sys/devices/system/cpu"
* @return The number of cores, or 1 if failed to get result
*/
public static int getNumCores() {
try {
//Get directory containing CPU info
File dir = new File("/sys/devices/system/cpu/");
//Filter to only list the devices we care about
File[] files = dir.listFiles(new FileFilter(){
@Override
public boolean accept(File pathname) {
//Check if filename is "cpu", followed by a single digit number
if(Pattern.matches("cpu[0-9]", pathname.getName())) {
return true;
}
return false;
}
});
//Return the number of cores (virtual CPU devices)
return files.length;
} catch(Exception e) {
//Default to return 1 core
return 1;
}
}
/**
* 描述：判断网络是否有效.
*
* @param context the context
* @return true, if is network available
*/
public static boolean isNetworkAvailable(Context context) {
try {
ConnectivityManager connectivity = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo info = connectivity.getActiveNetworkInfo();
if (info != null && info.isConnected()) {
if (info.getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
} catch (Exception e) {
e.printStackTrace();
return false;
}
return false;
}
/**
* Gps是否打开
* 需要<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />权限
*
* @param context the context
* @return true, if is gps enabled
*/
public static boolean isGpsEnabled(Context context) {
LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
return lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
}
/**
* 判断当前网络是否是移动数据网络.
*
* @param context the context
* @return boolean
*/
public static boolean isMobile(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
if (activeNetInfo != null
&& activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
return true;
}
return false;
}
/**
* 导入数据库.
*
* @param context the context
* @param dbName the db name
* @param rawRes the raw res
* @return true, if successful
*/
public static boolean importDatabase(Context context,String dbName,int rawRes) {
int buffer_size = 1024;
InputStream is = null;
FileOutputStream fos = null;
boolean flag = false;
try {
String dbPath = "/data/data/"+context.getPackageName()+"/databases/"+dbName;
File dbfile = new File(dbPath);
//判断数据库文件是否存在，若不存在则执行导入，否则直接打开数据库
if (!dbfile.exists()) {
//欲导入的数据库
if(!dbfile.getParentFile().exists()){
dbfile.getParentFile().mkdirs();
}
dbfile.createNewFile();
is = context.getResources().openRawResource(rawRes);
fos = new FileOutputStream(dbfile);
byte[] buffer = new byte[buffer_size];
int count = 0;
while ((count = is.read(buffer)) > 0) {
fos.write(buffer, 0, count);
}
fos.flush();
}
flag = true;
} catch (Exception e) {
e.printStackTrace();
}finally{
if(fos!=null){
try {
fos.close();
} catch (Exception e) {
}
}
if(is!=null){
try {
is.close();
} catch (Exception e) {
}
}
}
return flag;
}
/**
* 获取屏幕尺寸与密度.
*
* @param context the context
* @return mDisplayMetrics
*/
public static DisplayMetrics getDisplayMetrics(Context context) {
Resources mResources;
if (context == null){
mResources = Resources.getSystem();
}else{
mResources = context.getResources();
}
//DisplayMetrics{density=1.5, width=480, height=854, scaledDensity=1.5, xdpi=160.421, ydpi=159.497}
//DisplayMetrics{density=2.0, width=720, height=1280, scaledDensity=2.0, xdpi=160.42105, ydpi=160.15764}
DisplayMetrics mDisplayMetrics = mResources.getDisplayMetrics();
return mDisplayMetrics;
}
/**
* 打开键盘.
*
* @param context the context
*/
public static void showSoftInput(Context context){
InputMethodManager inputMethodManager = (InputMethodManager) context
.getSystemService(Context.INPUT_METHOD_SERVICE);
inputMethodManager.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
}
/**
* 关闭键盘事件.
*
* @param context the context
*/
public static void closeSoftInput(Context context) {
InputMethodManager inputMethodManager = (InputMethodManager)context
.getSystemService(Context.INPUT_METHOD_SERVICE);
if (inputMethodManager != null && ((Activity)context).getCurrentFocus() != null) {
inputMethodManager.hideSoftInputFromWindow(((Activity)context).getCurrentFocus()
.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
}
}
/**
* 获取包信息.
*
* @param context the context
*/
public static PackageInfo getPackageInfo(Context context) {
PackageInfo info = null;
try {
String packageName = context.getPackageName();
info = context.getPackageManager().getPackageInfo(packageName, 0);
} catch (Exception e) {
e.printStackTrace();
}
return info;
}
}
时间： 2024-08-07 17:30:10