diff --git a/ZBLibrary/src/main/java/zuo/biao/library/base/BaseBottomTabActivity.java b/ZBLibrary/src/main/java/zuo/biao/library/base/BaseBottomTabActivity.java
index 9f2f279..16de7fd 100755
--- a/ZBLibrary/src/main/java/zuo/biao/library/base/BaseBottomTabActivity.java
+++ b/ZBLibrary/src/main/java/zuo/biao/library/base/BaseBottomTabActivity.java
@@ -14,6 +14,7 @@
 
 package zuo.biao.library.base;
 
+import zuo.biao.library.R;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentTransaction;
 import android.view.View;
@@ -30,7 +31,7 @@ public abstract class BaseBottomTabActivity extends BaseActivity {
 
 
 
-	//UI显示区(操作UI，但不存在数据获取或处理代码，也不存在事件监听代码)<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+	// UI显示区(操作UI，但不存在数据获取或处理代码，也不存在事件监听代码)<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
 
 	protected static int[] tabClickIds;
@@ -38,7 +39,7 @@ public abstract class BaseBottomTabActivity extends BaseActivity {
 	protected View[] vTabClickViews;
 	protected View[][] vTabSelectViews;
 	@Override
-	public void initView() {//必须调用
+	public void initView() {// 必须调用
 
 		tabClickIds = getTabClickIds();
 
@@ -67,7 +68,7 @@ public void initView() {//必须调用
 	protected abstract void selectTab(int position);
 
 	/**设置选中状态
-	 * @param position
+	 * @param position 
 	 */
 	protected void setTabSelection(int position) {
 		if (vTabSelectViews == null) {
@@ -87,57 +88,122 @@ protected void setTabSelection(int position) {
 
 	/**
 	 *  == true >> 每次点击相应tab都加载，调用getFragment方法重新对点击的tab对应的fragment赋值。
-	 * 如果不希望重载，可以重写selectFragment。
+	 * 如果不希望重载，可以setOnTabSelectedListener，然后在onTabSelected内重写点击tab事件。
 	 */
 	protected boolean needReload = false;
 	/**
 	 * 当前显示的tab所在位置，对应fragment所在位置
 	 */
 	protected int currentPosition = 0;
+
 	/**选择并显示fragment
 	 * @param position
 	 */
 	public void selectFragment(int position) {
-		//tab，资源消耗很小<<<<<<
-		setTabSelection(position);
-		selectTab(position);
-		//tab，资源消耗很小>>>>>>
+		if (fragments == null || fragments.length != getCount()) {
+			if (fragments != null) {
+				FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
+				for (int i = 0; i < fragments.length; i++) {
+					fragmentTransaction.remove(fragments[i]);
+				}
+				fragmentTransaction.commit();
+			}
+
+			fragments = new Fragment[getCount()];
+		}
+
+		Fragment fragment = fragments[position];
+		String tag = TAG + "-fragment-" + position;
+		if (fragment == null) {
+			fragment = fragmentManager.findFragmentByTag(tag);
+		}
 
 		if (currentPosition == position) {
-			if (needReload) {
-				if (fragments[position] != null && fragments[position].isAdded()) {
-					FragmentTransaction ft = fragmentManager.beginTransaction();
-					ft.remove(fragments[position]).commit();
-					fragments[position] = null;
-				}
-			} else {
-				if (fragments[position] != null && fragments[position].isVisible()) {
-					Log.w(TAG, "selectFragment currentPosition == position" +
-							" >> fragments[position] != null && fragments[position].isVisible()" +
-							" >> return;	");
-					return;
-				}
+			if (needReload == false && fragment != null && fragment.isVisible()) {
+				android.util.Log.w(TAG, "selectFragment currentPosition == position" +
+						" >> fragment != null && fragment.isVisible()" +
+						" >> return;	");
+				return;
 			}
 		}
 
+		FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
+		if (needReload) {
+			fragmentTransaction.remove(fragment);
+			fragment = null;
+		}
+
+		if (fragment == null) {
+			fragment = fragments[position] = getFragment(position);
+		}
 
-		if (fragments[position] == null) {
-			fragments[position] = getFragment(position);
+		// 用全局的fragmentTransaction因为already committed 崩溃
+		for (Fragment f : fragmentManager.getFragments()) {
+			if (f != null) {
+				fragmentTransaction.hide(f);
+			}
 		}
 
-		//全局的fragmentTransaction因为already committed 崩溃
-		FragmentTransaction ft = fragmentManager.beginTransaction();
-		ft.hide(fragments[currentPosition]);
-		if (fragments[position].isAdded() == false) {
-			ft.add(getFragmentContainerResId(), fragments[position]);
+		if (fragment.isAdded() == false) {
+			fragmentTransaction.add(R.id.flBaseTabFragmentContainer, fragment, tag);
+		}
+		FragmentTransaction ft = fragmentTransaction.show(fragment);
+		try { // cannot perform this action after savedInstance
+			ft.commit();
+		} catch (Throwable e) {
+			e.printStackTrace();
 		}
-		ft.show(fragments[position]).commit();
 
 		this.currentPosition = position;
 	}
 
 
-	//UI显示区(操作UI，但不存在数据获取或处理代码，也不存在事件监听代码)>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+	protected void reload(int position) {
+		remove(position);
+		if (position == currentPosition) {
+			selectFragment(position);
+		}
+	}
+	protected void reloadAll() {
+		runUiThread(new Runnable() {
+			
+			@Override
+			public void run() {
+				removeAll(true);
+				selectFragment(currentPosition);				
+			}
+		});
+	}
+	protected void remove(int position) {
+		remove(position, false);
+	}
+	protected void remove(int position, boolean destroy) {
+		if (fragments != null && position >= 0 && position < fragments.length && fragments[position] != null) {
+			try {
+				fragmentManager.beginTransaction().remove(fragments[position]).commit();
+			} catch (Exception e) {
+				Log.e(TAG, "remove  try { fragmentManager.beginTransaction().remove(fragments[position]).commit();" +
+						" } catch (Exception e) {\n" + e.getMessage());
+				destroy = true;
+			}
+			if (destroy) {
+				fragments[position].onDestroy();
+				fragments[position] = null;
+			}
+		}
+	}
+	protected void removeAll() {
+		removeAll(false);
+	}
+	protected void removeAll(boolean destroy) {
+		if (fragments != null) {
+			for (int i = 0; i < fragments.length; i++) {
+				remove(i, destroy);
+			}
+		}
+	}
+
+	// UI显示区(操作UI，但不存在数据获取或处理代码，也不存在事件监听代码)>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 
 
 
@@ -148,19 +214,18 @@ public void selectFragment(int position) {
 
 
 
-	//Data数据区(存在数据获取或处理代码，但不存在事件监听代码)<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+	// Data数据区(存在数据获取或处理代码，但不存在事件监听代码)<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
 
 	protected Fragment[] fragments;
 	@Override
-	public void initData() {//必须调用
+	public void initData() {// 必须调用
 
-		//fragmentActivity子界面初始化<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+		// fragmentActivity子界面初始化<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
-		fragments = new Fragment[getCount()];
 		selectFragment(currentPosition);
 
-		//fragmentActivity子界面初始化>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+		// fragmentActivity子界面初始化>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 
 	}
 
@@ -194,7 +259,7 @@ public int getCount() {
 		return tabClickIds == null ? 0 :tabClickIds.length;
 	}
 
-	//Data数据区(存在数据获取或处理代码，但不存在事件监听代码)>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+	// Data数据区(存在数据获取或处理代码，但不存在事件监听代码)>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 
 
 
@@ -205,10 +270,10 @@ public int getCount() {
 
 
 
-	//Event事件区(只要存在事件监听代码就是)<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+	// Event事件区(只要存在事件监听代码就是)<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
 	@Override
-	public void initEvent() {//必须调用
+	public void initEvent() {// 必须调用
 
 		for (int i = 0; i < vTabClickViews.length; i++) {
 			final int which = i;
@@ -222,26 +287,23 @@ public void onClick(View v) {
 		}
 	}
 
-	//生命周期、onActivityResult<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
-
-
-
-	//生命周期、onActivityResult>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
-
-
-	//Event事件区(只要存在事件监听代码就是)>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+	// 系统自带监听方法<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
 
+	// 类相关监听<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
 
+	// 类相关监听>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 
+	// 系统自带监听方法>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 
 
+	// Event事件区(只要存在事件监听代码就是)>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 
-	//内部类,尽量少用<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
 
+	// 内部类,尽量少用<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
-	//内部类,尽量少用>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+	// 内部类,尽量少用>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 
 }
\ No newline at end of file
diff --git a/ZBLibrary/src/main/java/zuo/biao/library/base/BaseFragment.java b/ZBLibrary/src/main/java/zuo/biao/library/base/BaseFragment.java
index 148176f..91906ce 100755
--- a/ZBLibrary/src/main/java/zuo/biao/library/base/BaseFragment.java
+++ b/ZBLibrary/src/main/java/zuo/biao/library/base/BaseFragment.java
@@ -42,6 +42,8 @@
 public abstract class BaseFragment extends Fragment implements FragmentPresenter {
 	private static final String TAG = "BaseFragment";
 
+	public static final String ARGUMENT_POSITION = "ARGUMENT_POSITION";
+
 	/**
 	 * 添加该Fragment的Activity
 	 * @warn 不能在子类中创建
@@ -79,6 +81,12 @@ public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
 		this.inflater = inflater;
 		this.container = container;
 
+		if (view != null) {
+			if (container == null || container.indexOfChild(view) < 0) {
+				container = (ViewGroup) view.getParent();
+			}
+			container.removeView(view);
+		}
 		return view;
 	}
 
@@ -109,6 +117,23 @@ public void setContentView(View v, ViewGroup.LayoutParams params) {
 	}
 
 
+	/**
+	 * 该Fragment在Activity添加的所有Fragment中的位置，通过ARGUMENT_POSITION设置
+	 * @must 只使用getPosition方法来获取position，保证position正确
+	 */
+	private int position = -1;
+	/**获取该Fragment在Activity添加的所有Fragment中的位置
+	 */
+	public int getPosition() {
+		if (position < 0) {
+			argument = getArguments();
+			if (argument != null) {
+				position = argument.getInt(ARGUMENT_POSITION, position);
+			}
+		}
+		return position;
+	}
+
 	/**
 	 * 可用于 打开activity与fragment，fragment与fragment之间的通讯（传值）等
 	 */
@@ -118,9 +143,11 @@ public void setContentView(View v, ViewGroup.LayoutParams params) {
 	 */
 	protected Intent intent = null;
 
+
 	/**通过id查找并获取控件，使用时不需要强转
+	 * @warn 调用前必须调用setContentView
 	 * @param id
-	 * @return
+	 * @return 
 	 */
 	@SuppressWarnings("unchecked")
 	public <V extends View> V findView(int id) {
@@ -136,23 +163,6 @@ public <V extends View> V findView(int id, OnClickListener l) {
 		v.setOnClickListener(l);
 		return v;
 	}
-	/**通过id查找并获取控件，使用时不需要强转
-	 * @warn 调用前必须调用setContentView
-	 * @param id
-	 * @return
-	 */
-	public <V extends View> V findViewById(int id) {
-		return findView(id);
-	}
-	/**通过id查找并获取控件，并setOnClickListener
-	 * @param id
-	 * @param l
-	 * @return
-	 */
-	public <V extends View> V findViewById(int id, OnClickListener l) {
-		return findView(id, l);
-	}
-
 
 	public Intent getIntent() {
 		return context.getIntent();
@@ -180,7 +190,7 @@ public final Handler runThread(String name, Runnable runnable) {
 			Log.w(TAG, "runThread  isAlive() == false >> return null;");
 			return null;
 		}
-		return context.runThread(name + hashCode(), runnable);//name, runnable);同一Activity出现多个同名Fragment可能会出错
+		return context.runThread(name + getPosition(), runnable);//name, runnable);同一Activity出现多个同名Fragment可能会出错
 	}
 
 	//运行线程>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
diff --git a/ZBLibrary/src/main/java/zuo/biao/library/base/BaseTabActivity.java b/ZBLibrary/src/main/java/zuo/biao/library/base/BaseTabActivity.java
index 72ebdcf..4cddcb9 100755
--- a/ZBLibrary/src/main/java/zuo/biao/library/base/BaseTabActivity.java
+++ b/ZBLibrary/src/main/java/zuo/biao/library/base/BaseTabActivity.java
@@ -189,34 +189,59 @@ public void select(int position) {
 	 * @param position
 	 */
 	public void selectFragment(int position) {
-		if (currentPosition == position) {
-			if (needReload) {
-				if (fragments[position] != null && fragments[position].isAdded()) {
-					FragmentTransaction ft = fragmentManager.beginTransaction();
-					ft.remove(fragments[position]).commit();
-					fragments[position] = null;
-				}
-			} else {
-				if (fragments[position] != null && fragments[position].isVisible()) {
-					Log.w(TAG, "selectFragment currentPosition == position" +
-							" >> fragments[position] != null && fragments[position].isVisible()" +
-							" >> return;	");
-					return;
+		if (fragments == null || fragments.length != getCount()) {
+			if (fragments != null) {
+				FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
+				for (int i = 0; i < fragments.length; i++) {
+					fragmentTransaction.remove(fragments[i]);
 				}
+				fragmentTransaction.commit();
 			}
+
+			fragments = new Fragment[getCount()];
+		}
+
+		Fragment fragment = fragments[position];
+		String tag = TAG + "-fragment-" + position;
+		if (fragment == null) {
+			fragment = fragmentManager.findFragmentByTag(tag);
 		}
 
-		if (fragments[position] == null) {
-			fragments[position] = getFragment(position);
+		if (currentPosition == position) {
+			if (needReload == false && fragment != null && fragment.isVisible()) {
+				android.util.Log.w(TAG, "selectFragment currentPosition == position" +
+						" >> fragment != null && fragment.isVisible()" +
+						" >> return;	");
+				return;
+			}
 		}
 
-		//全局的fragmentTransaction因为already committed 崩溃
-		FragmentTransaction ft = fragmentManager.beginTransaction();
-		ft.hide(fragments[currentPosition]);
-		if (fragments[position].isAdded() == false) {
-			ft.add(R.id.flBaseTabFragmentContainer, fragments[position]);
+		FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
+		if (needReload) {
+			fragmentTransaction.remove(fragment);
+			fragment = null;
+		}
+
+		if (fragment == null) {
+			fragment = fragments[position] = getFragment(position);
+		}
+
+		// 用全局的fragmentTransaction因为already committed 崩溃
+		for (Fragment f : fragmentManager.getFragments()) {
+			if (f != null) {
+				fragmentTransaction.hide(f);
+			}
+		}
+
+		if (fragment.isAdded() == false) {
+			fragmentTransaction.add(R.id.flBaseTabFragmentContainer, fragment, tag);
+		}
+		FragmentTransaction ft = fragmentTransaction.show(fragment);
+		try { // cannot perform this action after savedInstance
+			ft.commit();
+		} catch (Throwable e) {
+			e.printStackTrace();
 		}
-		ft.show(fragments[position]).commit();
 
 		this.currentPosition = position;
 	}
diff --git a/ZBLibrary/src/main/java/zuo/biao/library/base/BaseTabFragment.java b/ZBLibrary/src/main/java/zuo/biao/library/base/BaseTabFragment.java
index 6902510..d025b48 100755
--- a/ZBLibrary/src/main/java/zuo/biao/library/base/BaseTabFragment.java
+++ b/ZBLibrary/src/main/java/zuo/biao/library/base/BaseTabFragment.java
@@ -185,34 +185,59 @@ public void select(int position) {
 	 * @param position
 	 */
 	public void selectFragment(int position) {
-		if (currentPosition == position) {
-			if (needReload) {
-				if (fragments[position] != null && fragments[position].isAdded()) {
-					FragmentTransaction ft = fragmentManager.beginTransaction();
-					ft.remove(fragments[position]).commit();
-					fragments[position] = null;
-				}
-			} else {
-				if (fragments[position] != null && fragments[position].isVisible()) {
-					Log.w(TAG, "selectFragment currentPosition == position" +
-							" >> fragments[position] != null && fragments[position].isVisible()" +
-							" >> return;	");
-					return;
+		if (fragments == null || fragments.length != getCount()) {
+			if (fragments != null) {
+				FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
+				for (int i = 0; i < fragments.length; i++) {
+					fragmentTransaction.remove(fragments[i]);
 				}
+				fragmentTransaction.commit();
 			}
+
+			fragments = new Fragment[getCount()];
+		}
+
+		Fragment fragment = fragments[position];
+		String tag = TAG + "-fragment-" + position;
+		if (fragment == null) {
+			fragment = fragmentManager.findFragmentByTag(tag);
 		}
 
-		if (fragments[position] == null) {
-			fragments[position] = getFragment(position);
+		if (currentPosition == position) {
+			if (needReload == false && fragment != null && fragment.isVisible()) {
+				android.util.Log.w(TAG, "selectFragment currentPosition == position" +
+						" >> fragment != null && fragment.isVisible()" +
+						" >> return;	");
+				return;
+			}
 		}
 
-		//全局的fragmentTransaction因为already committed 崩溃
-		FragmentTransaction ft = fragmentManager.beginTransaction();
-		ft.hide(fragments[currentPosition]);
-		if (fragments[position].isAdded() == false) {
-			ft.add(R.id.flBaseTabFragmentContainer, fragments[position]);
+		FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
+		if (needReload) {
+			fragmentTransaction.remove(fragment);
+			fragment = null;
+		}
+
+		if (fragment == null) {
+			fragment = fragments[position] = getFragment(position);
+		}
+
+		// 用全局的fragmentTransaction因为already committed 崩溃
+		for (Fragment f : fragmentManager.getFragments()) {
+			if (f != null) {
+				fragmentTransaction.hide(f);
+			}
+		}
+
+		if (fragment.isAdded() == false) {
+			fragmentTransaction.add(R.id.flBaseTabFragmentContainer, fragment, tag);
+		}
+		FragmentTransaction ft = fragmentTransaction.show(fragment);
+		try { // cannot perform this action after savedInstance
+			ft.commit();
+		} catch (Throwable e) {
+			e.printStackTrace();
 		}
-		ft.show(fragments[position]).commit();
 
 		this.currentPosition = position;
 	}