Warning: file_get_contents(/data/phpspider/zhask/data//catemap/3/android/222.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181

Warning: file_get_contents(/data/phpspider/zhask/data//catemap/5/tfs/3.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Java 将选项卡布局从文字更改为图标_Java_Android - Fatal编程技术网

Java 将选项卡布局从文字更改为图标

Java 将选项卡布局从文字更改为图标,java,android,Java,Android,我仍然是永远学习代码,但需要一些帮助这一个 我想将选项卡视图中的文字更改为图标 我该怎么做 这是我的Main.java public class Main extends ActionBarActivity { Toolbar toolbar; ViewPager pager; ViewPagerAdapter adapter; SlidingTabLayout tabs; CharSequence Titles[] = {"Home", "Events

我仍然是永远学习代码,但需要一些帮助这一个

我想将选项卡视图中的文字更改为图标

我该怎么做

这是我的Main.java

public class Main extends ActionBarActivity {

    Toolbar toolbar;
    ViewPager pager;
    ViewPagerAdapter adapter;
    SlidingTabLayout tabs;
    CharSequence Titles[] = {"Home", "Events", "Bluetooth Chat"};
    int Numboftabs = 3;      

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getSupportActionBar().setElevation(0);

        // Creating The Toolbar and setting it as the Toolbar for the activity.

        // Creating The ViewPagerAdapter and Passing Fragment Manager, Titles fot the Tabs and Number Of Tabs.
        adapter = new ViewPagerAdapter(getSupportFragmentManager(), Titles, Numboftabs);

        // Assigning ViewPager View and setting the adapter.
        pager = (ViewPager) findViewById(R.id.pager);
        pager.setAdapter(adapter);

        // Assiging the Sliding Tab Layout View.
        tabs = (SlidingTabLayout) findViewById(R.id.tabs);
        tabs.setDistributeEvenly(true); // To make the Tabs Fixed set this true, This makes the tabs Space Evenly in Available width

        // Setting Custom Color for the Scroll bar indicator of the Tab View
        tabs.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
            @Override
            public int getIndicatorColor(int position) {
                return getResources().getColor(R.color.tabsScrollColor);
            }
        });

        // Setting the ViewPager For the SlidingTabsLayout.
        tabs.setViewPager(pager);
        final Button b = new Button(Main.this);
        b.setBackgroundDrawable(getResources().getDrawable(R.drawable.button_pressed));
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    public void Main2(View view)    {
        startActivity(new Intent(this, Main2.class));
    }

    public void Bluetooth(View view)    {
        startActivity(new Intent(this, MainActivity.class));
    }

    @Override
    public void onBackPressed() {
        Main.this.finish();
    }
}
这是我的ViewPagerAdapter.Java

public class ViewPagerAdapter extends FragmentStatePagerAdapter {

    CharSequence Titles[]; // This will Store the Titles of the Tabs which are Going to be passed when ViewPagerAdapter is created
    int NumbOfTabs; // Store the number of tabs, this will also be passed when the ViewPagerAdapter is created

    // Build a Constructor and assign the passed Values to appropriate values in the class
    public ViewPagerAdapter(FragmentManager fm,CharSequence mTitles[], int mNumbOfTabsumb) {
        super(fm);

        this.Titles = mTitles;
        this.NumbOfTabs = mNumbOfTabsumb;
    }

    //This method return the fragment for the every position in the View Pager
    @Override
    public Fragment getItem(int i) {
        switch (i) {
            case 0:
                return new Tab1();
            case 1:
                return new Tab2();
            case 2:
                return new Tab4();
        }
        return null;
   }

    // This method returns the titles for the Tabs in the Tab Strip
   @Override
   public CharSequence getPageTitle(int position) {
        return Titles[position];
   }

    // This method returns the number of tabs for the tabs Strip
    @Override
    public int getCount() {
        return NumbOfTabs;
    }
}

非常感谢您的帮助。

您可以使用ImageSpan&SpannableString显示图标而不是文本

首先创建一个可绘制源的数组

int tabIcons[] = {R.drawable.ic_tab_home,
            R.drawable.ic_tab_job,
            R.drawable.ic_tab_map,
            R.drawable.ic_tab_comments
    };
然后像这样重写getPageTitle()

 @Override
    public CharSequence getPageTitle(int position) {
         Drawable drawable = getResources().getDrawable(tabIcons[position]);
                    drawable.setBounds(0, 0, 56, 56);
                    ImageSpan imageSpan = new ImageSpan(drawable);
                    SpannableString spannableString = new SpannableString(" ");
                    spannableString.setSpan(imageSpan, 0, spannableString.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
                    return spannableString;
    }

当我输入以下代码时,我得到一个错误:错误:(50,43)错误:类管理器中的getDrawable方法不能应用于给定的类型;必需:未找到参数:int原因:实际参数列表和形式参数列表长度不同您是否在tabIcons[]数组中使用可绘制源id?确保您为选项卡放置了完全相同数量的可绘制标签。e、 g对于3个选项卡使用3个可绘制id。还要确保您的可绘制文件夹中存在所有可绘制文件。是的,如果我为getResources()创建了一个方法,我会出现上述错误,如果我没有创建方法,我会出现此错误错误错误:(48,29)错误:找不到符号方法getResources(),不要创建名为getResources()的方法,使用默认的getResources()。尝试getActivity().getResources().getDrawable(选项卡图标[position]);由于某些原因,它没有使用默认值,getResources()显示为红色,当我按Alt并输入时,如果我将代码放入Main.Java中,它会提供“创建Getter”、“创建属性”和“创建方法”getResources的选项,但在我的ViewPagerAdapter中它无法识别默认值。