Android 选项卡不是'；t在安卓系统中工作

我遇到了一个障碍，我的选项卡式布局与它们的内容重叠。我目前正在创建一个Android应用程序。此时将打开第一个选项卡。（链接至下图）：

这是我打开第二个选项卡（链接到下图）时发生的情况：

您可能会注意到显示“button”的按钮与主活动重叠。这是我的问题。我不想让它们重叠。我只希望按钮显示其他活动（无重叠）。以下是我的MainActivity.java代码的一部分：

package com.example.currencyconverter;


import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    addListenerOnButton();
    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);

    ActionBar actionBar = getActionBar();
    actionBar.setSubtitle("Created By Rohit Nandakumar");
    actionBar.setTitle("Currency Converter"); 
// Specify that tabs should be displayed in the action bar.
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

ActionBar.Tab Frag1 = actionBar.newTab().setText("Converter");
ActionBar.Tab Frag2 = actionBar.newTab().setText("Currencies");
ActionBar.Tab Frag3 = actionBar.newTab().setText("News");

Fragment fragment1 = new Fragment1();
Fragment fragment2 = new Fragment2();
Fragment fragment3 = new Fragment3();

Frag1.setTabListener(new MyTabsListener(fragment1));
Frag2.setTabListener(new MyTabsListener(fragment2));
Frag3.setTabListener(new MyTabsListener(fragment3));

actionBar.addTab(Frag1);
actionBar.addTab(Frag2);
actionBar.addTab(Frag3);

package com.example.currencyconverter;

import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment1 extends Fragment{
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.activity_main, container, false);
}
}

package com.example.currencyconverter;

import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment2 extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment2, container, false);
}
}

下面是Fragment1.java代码：

package com.example.currencyconverter;


import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    addListenerOnButton();
    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);

    ActionBar actionBar = getActionBar();
    actionBar.setSubtitle("Created By Rohit Nandakumar");
    actionBar.setTitle("Currency Converter"); 
// Specify that tabs should be displayed in the action bar.
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

ActionBar.Tab Frag1 = actionBar.newTab().setText("Converter");
ActionBar.Tab Frag2 = actionBar.newTab().setText("Currencies");
ActionBar.Tab Frag3 = actionBar.newTab().setText("News");

Fragment fragment1 = new Fragment1();
Fragment fragment2 = new Fragment2();
Fragment fragment3 = new Fragment3();

Frag1.setTabListener(new MyTabsListener(fragment1));
Frag2.setTabListener(new MyTabsListener(fragment2));
Frag3.setTabListener(new MyTabsListener(fragment3));

actionBar.addTab(Frag1);
actionBar.addTab(Frag2);
actionBar.addTab(Frag3);

package com.example.currencyconverter;

import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment1 extends Fragment{
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.activity_main, container, false);
}
}

package com.example.currencyconverter;

import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment2 extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment2, container, false);
}
}

以下是我的Fragment2.java代码：

package com.example.currencyconverter;


import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    addListenerOnButton();
    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);

    ActionBar actionBar = getActionBar();
    actionBar.setSubtitle("Created By Rohit Nandakumar");
    actionBar.setTitle("Currency Converter"); 
// Specify that tabs should be displayed in the action bar.
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

ActionBar.Tab Frag1 = actionBar.newTab().setText("Converter");
ActionBar.Tab Frag2 = actionBar.newTab().setText("Currencies");
ActionBar.Tab Frag3 = actionBar.newTab().setText("News");

Fragment fragment1 = new Fragment1();
Fragment fragment2 = new Fragment2();
Fragment fragment3 = new Fragment3();

Frag1.setTabListener(new MyTabsListener(fragment1));
Frag2.setTabListener(new MyTabsListener(fragment2));
Frag3.setTabListener(new MyTabsListener(fragment3));

actionBar.addTab(Frag1);
actionBar.addTab(Frag2);
actionBar.addTab(Frag3);

package com.example.currencyconverter;

import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment1 extends Fragment{
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.activity_main, container, false);
}
}

package com.example.currencyconverter;

import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment2 extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment2, container, false);
}
}

这是我的MyTabsListener.java文件：

package com.example.currencyconverter;

import android.app.ActionBar.Tab;
import android.app.ActionBar.TabListener;
import android.app.Fragment;
import android.app.FragmentTransaction;

public class MyTabsListener implements TabListener {

    public Fragment fragment;

    public MyTabsListener(Fragment fragment) {
        this.fragment = fragment;
    }


    @Override
    public void onTabReselected(Tab tab, FragmentTransaction ft) {
    }

    @Override
    public void onTabSelected(Tab tab, FragmentTransaction ft) {
        ft.replace(R.id.fragment_container, fragment);
        }

    @Override
    public void onTabUnselected(Tab tab, FragmentTransaction ft) {

    }



}

---

有什么问题？我做错了什么。我搜索过谷歌，但找不到解决方案。非常感谢您的帮助。

嘿，我不太确定，但您是否需要执行

ft.commit（）每次在
ft.之后更换…
吗？我不知道这是否会引起问题，但只是好奇而已。