我的标签主机不工作
My tabhost is not working
我正在使用带有 2 个选项卡的 tabhost 我无法在选项卡中执行任何操作 activity,
这是主要的 class，我在其中实现了选项卡主机
tabHost = getTabHost();
//* TabHost Implementations*//*
tabHost = (TabHost) findViewById(android.R.id.tabhost);
tabHost.setup();
TabSpec tab1 = tabHost.newTabSpec("FirstTab");
TabSpec tab2 = tabHost.newTabSpec("SecondTab");
// Set the Tab name and Activity
// that will be opened when particular Tab will be selected
tab1.setIndicator("Friends");
Intent tab1intent = new Intent().setClass(this, Friends_list_add.class);
tab1intent.putExtra("userid", userid);
System.out.println("tabHost------" + tab1intent);
tab1.setContent(tab1intent);
tab2.setIndicator("Invite Friends");
Intent tab2intent = new Intent().setClass(this, Friends_Invite_list.class);
tab2intent.putExtra("response", response);
System.out.println("tab2intent------" + tab2intent);
tab2.setContent(tab2intent);
//** Add the tabs to the TabHost to display. *//*
tabHost.addTab(tab1);
tabHost.addTab(tab2);
tab = 1;
//set Windows tab as default (zero based)
tabHost.setCurrentTab(tab);
通过意图我切换到另一个 activity 在那个 activity 在 onCreate
我必须按如下 textview 查看布局，但它没有显示任何内容
no_friends = (TextView) findViewById (R.id.nodata_found_friends);
我已经参考了所有网站，但仍然没有得到任何东西，
请帮助我，提前致谢
第一个代码放入 xml 文件
<TabHost
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/title_back_color" />
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="6" />
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.10"
android:background="@color/popular_back_color"
android:orientation="horizontal"
android:showDividers="none"
android:tabStripEnabled="false" />
</LinearLayout>
</TabHost>
现在在您的主要 activity 中放置此代码。
public class MainActivity extends FragmentActivity implements
OnTabChangeListener, OnPageChangeListener {
MyPageAdapter pageAdapter;
private ViewPager mViewPager;
private TabHost mTabHost;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mViewPager = (ViewPager) findViewById(R.id.viewpager);
// Tab Initialization
initialiseTabHost();
// Fragments and ViewPager Initialization
List<Fragment> fragments = getFragments();
pageAdapter = new MyPageAdapter(getSupportFragmentManager(), fragments);
mViewPager.setAdapter(pageAdapter);
mViewPager.setOnPageChangeListener(MainActivity.this);
}
// Method to add a TabHost
private static void AddTab(MainActivity activity, TabHost tabHost,
TabHost.TabSpec tabSpec) {
tabSpec.setContent(new MyTabFactory(activity));
tabHost.addTab(tabSpec);
}
// Manages the Tab changes, synchronizing it with Pages
public void onTabChanged(String tag) {
int pos = this.mTabHost.getCurrentTab();
this.mViewPager.setCurrentItem(pos);
setSelectedTabColor();
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
// Manages the Page changes, synchronizing it with Tabs
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
int pos = this.mViewPager.getCurrentItem();
this.mTabHost.setCurrentTab(pos);
}
@Override
public void onPageSelected(int arg0) {
}
@SuppressLint("ResourceAsColor")
private void setSelectedTabColor() {
for (int i = 0; i < mTabHost.getTabWidget().getChildCount(); i++) {
TextView tv = (TextView) mTabHost.getTabWidget().getChildAt(i)
.findViewById(android.R.id.title);
tv.setTextColor(getResources().getColor(R.color.white));
mTabHost.getTabWidget()
.getChildAt(i)
.setBackgroundColor(
getResources().getColor(R.color.popular_back_color));
}
mTabHost.getTabWidget()
.getChildAt(mTabHost.getCurrentTab())
.setBackgroundColor(
getResources().getColor(R.color.app_yellow_color));
}
private List<Fragment> getFragments() {
List<Fragment> fList = new ArrayList<Fragment>();
// TODO Put here your Fragments
// DealTab f1 = DealTab.newInstance();
DealTab_New f1 = DealTab_New.newInstance();
EventTab f2 = EventTab.newInstance();
MyAccountFragment f3 = MyAccountFragment.newInstance();
MessageFragment f4 = MessageFragment.newInstance();
MoreFragment f5 = MoreFragment.newInstance();
QrCodeFragment f6 = QrCodeFragment.newInstance();
// fList.add(f1);
fList.add(f1);
fList.add(f2);
fList.add(f3);
fList.add(f4);
fList.add(f5);
fList.add(f6);
return fList;
}
// Tabs Creation
@SuppressLint("ResourceAsColor")
private void initialiseTabHost() {
mTabHost = (TabHost) findViewById(android.R.id.tabhost);
mTabHost.setup();
// TODO Put here your Tabs
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab1").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_deals)));
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab2").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_event)));
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab3").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_my_account)));
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab4").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_message)));
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab5").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_more)));
mTabHost.setOnTabChangedListener(this);
setSelectedTabColor();
}
它以正确的方式工作，我在我的应用程序中使用它。
谢谢和问候。
试试这种方式来制作 tabhost 我相信它的工作。
public class MainActivity extends TabActivity implements OnTabChangeListener,
OnClickListener {
private ImageView iv_Home;
private ImageView iv_Chat;
private ImageView iv_Post;
private ImageView iv_Alert;
private ImageView iv_More;
private TabHost tabHost;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
Casting();
}
private void Casting() {
// TODO Auto-generated method stub
iv_Home = (ImageView) findViewById(R.id.iv_Home);
iv_Chat = (ImageView) findViewById(R.id.iv_Chat);
iv_Post = (ImageView) findViewById(R.id.iv_Post);
iv_Alert = (ImageView) findViewById(R.id.iv_Alert);
iv_More = (ImageView) findViewById(R.id.iv_More);
iv_Home.setOnClickListener(this);
iv_Chat.setOnClickListener(this);
iv_Post.setOnClickListener(this);
iv_Alert.setOnClickListener(this);
iv_More.setOnClickListener(this);
tabHost = getTabHost();
tabHost.setup();
TabHost.TabSpec tabSpec;
tabSpec = tabHost.newTabSpec("Tab1").setIndicator("")
.setContent(new Intent(this, CategoryActivity.class));
tabHost.addTab(tabSpec);
tabSpec = tabHost.newTabSpec("Tab2").setIndicator("")
.setContent(new Intent().setClass(this, ChatActivity.class));
tabHost.addTab(tabSpec);
tabSpec = tabHost
.newTabSpec("Tab3")
.setIndicator("")
.setContent(
new Intent().setClass(this, LoginActivity.class));
tabHost.addTab(tabSpec);
tabSpec = tabHost.newTabSpec("Tab4").setIndicator("")
.setContent(new Intent().setClass(this, AlertActivity.class));
tabHost.addTab(tabSpec);
tabSpec = tabHost.newTabSpec("Tab5").setIndicator("")
.setContent(new Intent().setClass(this, MoreActivity.class));
tabHost.addTab(tabSpec);
tabHost.setOnTabChangedListener(this);
tabHost.setCurrentTab(0);
setSelectedTabColor();
}
@SuppressWarnings("unused")
@Override
public void onTabChanged(String tabId) {
// TODO Auto-generated method stub
int pos = this.tabHost.getCurrentTab();
// this.mViewPager.setCurrentItem(pos);
setSelectedTabColor();
}
// private static void AddTab(MainActivity activity, TabHost tabHost,
// TabHost.TabSpec tabSpec) {
// tabSpec.setContent(new CategoryTabFactory(activity));
// tabHost.addTab(tabSpec);
// }
private void setSelectedTabColor() {
// TODO Auto-generated method stub
switch (tabHost.getCurrentTab()) {
case 0:
Global.setActionbar(this, getActionBar(),
getString(R.string.app_name));
iv_Home.setImageResource(R.drawable.btn_home_hover);
iv_Chat.setImageResource(R.drawable.btn_chat);
iv_Post.setImageResource(R.drawable.btn_post);
iv_Alert.setImageResource(R.drawable.btn_alert);
iv_More.setImageResource(R.drawable.btn_more);
break;
case 1:
Global.setActionbar(this, getActionBar(), getString(R.string.chat));
iv_Home.setImageResource(R.drawable.btn_home);
iv_Chat.setImageResource(R.drawable.btn_chat_hover);
iv_Post.setImageResource(R.drawable.btn_post);
iv_Alert.setImageResource(R.drawable.btn_alert);
iv_More.setImageResource(R.drawable.btn_more);
break;
case 2:
Global.setActionbar(this, getActionBar(),
getString(R.string.post_product));
iv_Home.setImageResource(R.drawable.btn_home);
iv_Chat.setImageResource(R.drawable.btn_chat);
iv_Post.setImageResource(R.drawable.btn_post_hover);
iv_Alert.setImageResource(R.drawable.btn_alert);
iv_More.setImageResource(R.drawable.btn_more);
break;
case 3:
Global.setActionbar(this, getActionBar(), getString(R.string.alert));
iv_Home.setImageResource(R.drawable.btn_home);
iv_Chat.setImageResource(R.drawable.btn_chat);
iv_Post.setImageResource(R.drawable.btn_post);
iv_Alert.setImageResource(R.drawable.btn_alert_hover);
iv_More.setImageResource(R.drawable.btn_more);
break;
case 4:
Global.setActionbar(this, getActionBar(), getString(R.string.more));
iv_Home.setImageResource(R.drawable.btn_home);
iv_Chat.setImageResource(R.drawable.btn_chat);
iv_Post.setImageResource(R.drawable.btn_post);
iv_Alert.setImageResource(R.drawable.btn_alert);
iv_More.setImageResource(R.drawable.btn_more_hover);
break;
default:
break;
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == iv_Home) {
tabHost.setCurrentTab(0);
} else if (v == iv_Chat) {
tabHost.setCurrentTab(1);
} else if (v == iv_Post) {
tabHost.setCurrentTab(2);
} else if (v == iv_Alert) {
tabHost.setCurrentTab(3);
} else if (v == iv_More) {
tabHost.setCurrentTab(4);
}
setSelectedTabColor();
}
}
我正在使用带有 2 个选项卡的 tabhost 我无法在选项卡中执行任何操作 activity,
这是主要的 class，我在其中实现了选项卡主机
tabHost = getTabHost();
//* TabHost Implementations*//*
tabHost = (TabHost) findViewById(android.R.id.tabhost);
tabHost.setup();
TabSpec tab1 = tabHost.newTabSpec("FirstTab");
TabSpec tab2 = tabHost.newTabSpec("SecondTab");
// Set the Tab name and Activity
// that will be opened when particular Tab will be selected
tab1.setIndicator("Friends");
Intent tab1intent = new Intent().setClass(this, Friends_list_add.class);
tab1intent.putExtra("userid", userid);
System.out.println("tabHost------" + tab1intent);
tab1.setContent(tab1intent);
tab2.setIndicator("Invite Friends");
Intent tab2intent = new Intent().setClass(this, Friends_Invite_list.class);
tab2intent.putExtra("response", response);
System.out.println("tab2intent------" + tab2intent);
tab2.setContent(tab2intent);
//** Add the tabs to the TabHost to display. *//*
tabHost.addTab(tab1);
tabHost.addTab(tab2);
tab = 1;
//set Windows tab as default (zero based)
tabHost.setCurrentTab(tab);
通过意图我切换到另一个 activity 在那个 activity 在 onCreate
我必须按如下 textview 查看布局，但它没有显示任何内容
no_friends = (TextView) findViewById (R.id.nodata_found_friends);
我已经参考了所有网站，但仍然没有得到任何东西， 请帮助我，提前致谢
第一个代码放入 xml 文件
<TabHost
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/title_back_color" />
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="6" />
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.10"
android:background="@color/popular_back_color"
android:orientation="horizontal"
android:showDividers="none"
android:tabStripEnabled="false" />
</LinearLayout>
</TabHost>
现在在您的主要 activity 中放置此代码。
public class MainActivity extends FragmentActivity implements
OnTabChangeListener, OnPageChangeListener {
MyPageAdapter pageAdapter;
private ViewPager mViewPager;
private TabHost mTabHost;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mViewPager = (ViewPager) findViewById(R.id.viewpager);
// Tab Initialization
initialiseTabHost();
// Fragments and ViewPager Initialization
List<Fragment> fragments = getFragments();
pageAdapter = new MyPageAdapter(getSupportFragmentManager(), fragments);
mViewPager.setAdapter(pageAdapter);
mViewPager.setOnPageChangeListener(MainActivity.this);
}
// Method to add a TabHost
private static void AddTab(MainActivity activity, TabHost tabHost,
TabHost.TabSpec tabSpec) {
tabSpec.setContent(new MyTabFactory(activity));
tabHost.addTab(tabSpec);
}
// Manages the Tab changes, synchronizing it with Pages
public void onTabChanged(String tag) {
int pos = this.mTabHost.getCurrentTab();
this.mViewPager.setCurrentItem(pos);
setSelectedTabColor();
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
// Manages the Page changes, synchronizing it with Tabs
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
int pos = this.mViewPager.getCurrentItem();
this.mTabHost.setCurrentTab(pos);
}
@Override
public void onPageSelected(int arg0) {
}
@SuppressLint("ResourceAsColor")
private void setSelectedTabColor() {
for (int i = 0; i < mTabHost.getTabWidget().getChildCount(); i++) {
TextView tv = (TextView) mTabHost.getTabWidget().getChildAt(i)
.findViewById(android.R.id.title);
tv.setTextColor(getResources().getColor(R.color.white));
mTabHost.getTabWidget()
.getChildAt(i)
.setBackgroundColor(
getResources().getColor(R.color.popular_back_color));
}
mTabHost.getTabWidget()
.getChildAt(mTabHost.getCurrentTab())
.setBackgroundColor(
getResources().getColor(R.color.app_yellow_color));
}
private List<Fragment> getFragments() {
List<Fragment> fList = new ArrayList<Fragment>();
// TODO Put here your Fragments
// DealTab f1 = DealTab.newInstance();
DealTab_New f1 = DealTab_New.newInstance();
EventTab f2 = EventTab.newInstance();
MyAccountFragment f3 = MyAccountFragment.newInstance();
MessageFragment f4 = MessageFragment.newInstance();
MoreFragment f5 = MoreFragment.newInstance();
QrCodeFragment f6 = QrCodeFragment.newInstance();
// fList.add(f1);
fList.add(f1);
fList.add(f2);
fList.add(f3);
fList.add(f4);
fList.add(f5);
fList.add(f6);
return fList;
}
// Tabs Creation
@SuppressLint("ResourceAsColor")
private void initialiseTabHost() {
mTabHost = (TabHost) findViewById(android.R.id.tabhost);
mTabHost.setup();
// TODO Put here your Tabs
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab1").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_deals)));
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab2").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_event)));
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab3").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_my_account)));
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab4").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_message)));
MainActivity.AddTab(
this,
this.mTabHost,
this.mTabHost.newTabSpec("Tab5").setIndicator(
"",
getApplicationContext().getResources().getDrawable(
R.drawable.btn_more)));
mTabHost.setOnTabChangedListener(this);
setSelectedTabColor();
}
它以正确的方式工作，我在我的应用程序中使用它。 谢谢和问候。
试试这种方式来制作 tabhost 我相信它的工作。
public class MainActivity extends TabActivity implements OnTabChangeListener,
OnClickListener {
private ImageView iv_Home;
private ImageView iv_Chat;
private ImageView iv_Post;
private ImageView iv_Alert;
private ImageView iv_More;
private TabHost tabHost;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
Casting();
}
private void Casting() {
// TODO Auto-generated method stub
iv_Home = (ImageView) findViewById(R.id.iv_Home);
iv_Chat = (ImageView) findViewById(R.id.iv_Chat);
iv_Post = (ImageView) findViewById(R.id.iv_Post);
iv_Alert = (ImageView) findViewById(R.id.iv_Alert);
iv_More = (ImageView) findViewById(R.id.iv_More);
iv_Home.setOnClickListener(this);
iv_Chat.setOnClickListener(this);
iv_Post.setOnClickListener(this);
iv_Alert.setOnClickListener(this);
iv_More.setOnClickListener(this);
tabHost = getTabHost();
tabHost.setup();
TabHost.TabSpec tabSpec;
tabSpec = tabHost.newTabSpec("Tab1").setIndicator("")
.setContent(new Intent(this, CategoryActivity.class));
tabHost.addTab(tabSpec);
tabSpec = tabHost.newTabSpec("Tab2").setIndicator("")
.setContent(new Intent().setClass(this, ChatActivity.class));
tabHost.addTab(tabSpec);
tabSpec = tabHost
.newTabSpec("Tab3")
.setIndicator("")
.setContent(
new Intent().setClass(this, LoginActivity.class));
tabHost.addTab(tabSpec);
tabSpec = tabHost.newTabSpec("Tab4").setIndicator("")
.setContent(new Intent().setClass(this, AlertActivity.class));
tabHost.addTab(tabSpec);
tabSpec = tabHost.newTabSpec("Tab5").setIndicator("")
.setContent(new Intent().setClass(this, MoreActivity.class));
tabHost.addTab(tabSpec);
tabHost.setOnTabChangedListener(this);
tabHost.setCurrentTab(0);
setSelectedTabColor();
}
@SuppressWarnings("unused")
@Override
public void onTabChanged(String tabId) {
// TODO Auto-generated method stub
int pos = this.tabHost.getCurrentTab();
// this.mViewPager.setCurrentItem(pos);
setSelectedTabColor();
}
// private static void AddTab(MainActivity activity, TabHost tabHost,
// TabHost.TabSpec tabSpec) {
// tabSpec.setContent(new CategoryTabFactory(activity));
// tabHost.addTab(tabSpec);
// }
private void setSelectedTabColor() {
// TODO Auto-generated method stub
switch (tabHost.getCurrentTab()) {
case 0:
Global.setActionbar(this, getActionBar(),
getString(R.string.app_name));
iv_Home.setImageResource(R.drawable.btn_home_hover);
iv_Chat.setImageResource(R.drawable.btn_chat);
iv_Post.setImageResource(R.drawable.btn_post);
iv_Alert.setImageResource(R.drawable.btn_alert);
iv_More.setImageResource(R.drawable.btn_more);
break;
case 1:
Global.setActionbar(this, getActionBar(), getString(R.string.chat));
iv_Home.setImageResource(R.drawable.btn_home);
iv_Chat.setImageResource(R.drawable.btn_chat_hover);
iv_Post.setImageResource(R.drawable.btn_post);
iv_Alert.setImageResource(R.drawable.btn_alert);
iv_More.setImageResource(R.drawable.btn_more);
break;
case 2:
Global.setActionbar(this, getActionBar(),
getString(R.string.post_product));
iv_Home.setImageResource(R.drawable.btn_home);
iv_Chat.setImageResource(R.drawable.btn_chat);
iv_Post.setImageResource(R.drawable.btn_post_hover);
iv_Alert.setImageResource(R.drawable.btn_alert);
iv_More.setImageResource(R.drawable.btn_more);
break;
case 3:
Global.setActionbar(this, getActionBar(), getString(R.string.alert));
iv_Home.setImageResource(R.drawable.btn_home);
iv_Chat.setImageResource(R.drawable.btn_chat);
iv_Post.setImageResource(R.drawable.btn_post);
iv_Alert.setImageResource(R.drawable.btn_alert_hover);
iv_More.setImageResource(R.drawable.btn_more);
break;
case 4:
Global.setActionbar(this, getActionBar(), getString(R.string.more));
iv_Home.setImageResource(R.drawable.btn_home);
iv_Chat.setImageResource(R.drawable.btn_chat);
iv_Post.setImageResource(R.drawable.btn_post);
iv_Alert.setImageResource(R.drawable.btn_alert);
iv_More.setImageResource(R.drawable.btn_more_hover);
break;
default:
break;
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == iv_Home) {
tabHost.setCurrentTab(0);
} else if (v == iv_Chat) {
tabHost.setCurrentTab(1);
} else if (v == iv_Post) {
tabHost.setCurrentTab(2);
} else if (v == iv_Alert) {
tabHost.setCurrentTab(3);
} else if (v == iv_More) {
tabHost.setCurrentTab(4);
}
setSelectedTabColor();
}
}