dialog activity管理类

public class UIHelper {

public Dialog mLoadDialog;

private int count;

public void showLoadDialog(Context context) {

showLoadDialog(context, null);

}

public void showLoadDialog(Context context, String msg) {

if (context == null) {

return;

}

if (context.isRestricted())

if (mLoadDialog != null && mLoadDialog.isShowing())

return;

count++;

if (count > 1) {

count = 0;

return;

}

View login_dialog = View.inflate(context, R.layout.load_doag, null);

mLoadDialog = new Dialog(context, R.style.dialog_with_alpha);

mLoadDialog.setCanceledOnTouchOutside(false);

if (!TextUtils.isEmpty(msg)) {

TextView messageTV = (TextView) login_dialog

.findViewById(R.id.login_doag_name);

messageTV.setText(msg);

}

mLoadDialog.setContentView(login_dialog);

try {

mLoadDialog.show();

} catch (Exception e) {

e.printStackTrace();

}

}

public void cloesLoadDialog() {

try {

if (mLoadDialog != null && mLoadDialog.isShowing()) {

mLoadDialog.dismiss();

count = 0;

mLoadDialog = null;

}

} catch (Exception e) {

}

}

/**

* 显示欢迎结界面

*

* @param ac

*/

public static void showWelcomeAc(Context ac) {

Intent intent = new Intent(ac, WelcomeActivity.class);

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

((Activity) ac).startActivity(intent);

}

/**

* 显示主界面

*

* @param ac

*/

public static void showMainAc(Context ac) {

Intent intent = new Intent(ac, MainActivity.class);

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

((Activity) ac).startActivity(intent);

AppManager.getAppManager().finishActivity(ac.getClass());

}

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="#00000000" >

<RelativeLayout

android:layout_width="120dp"

android:layout_height="120dp"

android:layout_centerInParent="true"

android:background="@drawable/loading_bg" >

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:gravity="center"

android:orientation="vertical" >

<ProgressBar

android:id="@+id/progressBar1"

style="@style/loading_large"

android:layout_gravity="center_horizontal" />

<TextView

android:id="@+id/login_doag_name"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:text="正在加载……"

android:textColor="#fff" />

</LinearLayout>

</RelativeLayout>

</RelativeLayout>

<style name="dialog_with_alpha" parent="android:Theme.Dialog">

<item name="android:windowFrame">@null</item>

<!-- 边框 -->

<item name="android:windowIsFloating">true</item>

<!-- 是否浮现在activity之上 -->

<item name="android:windowIsTranslucent">false</item>

<!-- 半透明 -->

<item name="android:windowNoTitle">true</item>

<!-- 无标题 -->

<item name="android:windowBackground">@android:color/transparent</item>

<!-- 背景透明 -->

<!-- <item name="android:backgroundDimEnabled">false</item> -->

<!-- 模糊 -->

</style>

/**

**************************************************************************

*

* @ClassName: AppManager

* @Description: 应用程序Activity管理类：用于Activity管理和应用程序退出

*

***************************************************************************

*/

public class AppManager {

private static Stack<Activity> activityStack;

private static AppManager instance;

private AppManager() {

}

/**

* 单一实例

*/

public static AppManager getAppManager() {

if (instance == null) {

instance = new AppManager();

}

return instance;

}

/**

* 添加Activity到堆栈

*/

public void addActivity(Activity activity) {

if (activityStack == null) {

activityStack = new Stack<Activity>();

}

activityStack.add(activity);

}

/**

* 获取当前Activity（堆栈中最后一个压入的）

*/

public Activity currentActivity() {

Activity activity = activityStack.lastElement();

return activity;

}

public Activity getActivity(Class<?> cls) {

for (Activity activity : activityStack) {

if (activity.getClass().equals(cls)) {

return activity;

}

}

return null;

}

/**

* 结束当前Activity（堆栈中最后一个压入的）

*/

public void finishActivity() {

Activity activity = activityStack.lastElement();

finishActivity(activity);

}

/**

* 结束指定的Activity

*/

public void finishActivity(Activity activity) {

if (activity != null) {

activityStack.remove(activity);

activity.finish();

activity = null;

}

}

/**

* 结束指定类名的Activity

*/

public void finishActivity(Class<?> cls) {

for (Activity activity : activityStack) {

if (activity.getClass().equals(cls)) {

finishActivity(activity);

}

}

}

/**

* 结束所有Activity

*/

public void finishAllActivity() {

for (int i = 0, size = activityStack.size(); i < size; i++) {

if (null != activityStack.get(i)) {

activityStack.get(i).finish();

}

}

activityStack.clear();

}

/**

* 退出所有Activity

*

* @return 是否完全退出

*/

public boolean exitAllActivity() {

LogUtil.e("AppManager", "应用程序退出exitAllActivity()");

boolean isFinished = true;

for (Activity act : activityStack) {

if (act != null) {

act.finish();

}

}

for (Activity act : activityStack) {

if (!act.isFinishing()) {

isFinished = false;

}

}

return isFinished;

}

/**

* 退出应用程序

*/

public void AppExit(Context context) {

try {

finishAllActivity();

ActivityManager activityMgr = (ActivityManager) context

.getSystemService(Context.ACTIVITY_SERVICE);

if (exitAllActivity()) {

activityMgr.killBackgroundProcesses(context.getPackageName());

System.exit(0);

}

} catch (Exception e) {

LogUtil.e("AppManager", "退出应用程序异常!");

StackTraceElement[] stacks = e.getStackTrace();

StringBuffer sb = new StringBuffer();

for (StackTraceElement stack : stacks) {

sb.append(stack.toString() + "\n");

}

LogUtil.e("AppManager", sb.toString());

System.exit(0);

}

}

}