android常用封装 －－－ BaseActivity
16lz
2021-01-23
public abstract class BaseActivity extends Activity { /** * 记录处于前台的Activity */ private static BaseActivity mForegroundActivity = null; /** * 记录所有活动的Activity */ private static final List mActivities = new LinkedList(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); initView(); initFindViewById(); initData(); initEvent(); // initActionBar(); } @Override protected void onResume() { mForegroundActivity = this; super.onResume(); } @Override protected void onPause() { mForegroundActivity = null; super.onPause(); } abstract protected void initView(); abstract protected void initData(); protected void initActionBar() { } /** * 关闭所有Activity */ public static void finishAll() { List copy; synchronized (mActivities) { copy = new ArrayList(mActivities); } for (BaseActivity activity : copy) { activity.finish(); } } /** * 关闭所有Activity，除了参数传递的Activity */ public static void finishAll(BaseActivity except) { List copy; synchronized (mActivities) { copy = new ArrayList(mActivities); } for (BaseActivity activity : copy) { if (activity != except) activity.finish(); } } /** * 是否有启动的Activity */ public static boolean hasActivity() { return mActivities.size() > 0; } /** * 获取当前处于前台的activity */ public static BaseActivity getForegroundActivity() { return mForegroundActivity; } /** * 获取当前处于栈顶的activity，无论其是否处于前台 */ public static BaseActivity getCurrentActivity() { List copy; synchronized (mActivities) { copy = new ArrayList(mActivities); } if (copy.size() > 0) { return copy.get(copy.size() - 1); } return null; } protected void initFindViewById() { } protected void initEvent() { } /** * 退出应用 */ public void exitApp() { finishAll(); android.os.Process.killProcess(android.os.Process.myPid()); }} 更多相关文章
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