如何在活动中对齐标题或标签的中心？

Question

我知道有两种设置活动标题的方法.一种方法是在android清单中设置它,如android:label ="@ string/app_name".第二个是在活动类中以编程方式设置,如setTitle("Hello World!").两种方式都位于左侧,但我如何将其放在中心？

Answer 1

它会工作正常..

TextView customView = (TextView) 
LayoutInflater.from(this).inflate(R.layout.actionbar_custom_title_view_centered, 
     null); 

ActionBar.LayoutParams params = new ActionBar.LayoutParams(
     ActionBar.LayoutParams.MATCH_PARENT, 
     ActionBar.LayoutParams.MATCH_PARENT, Gravity.CENTER ); 

customView.setText("Some centered text"); 
getSupportActionBar().setCustomView(customView, params); 

Answer 2

您需要定义自定义标题样式/主题.查看com.example.android.apis.app.CustomTitle的示例.

Answer 3

我找到了另一种设置标题中心的方法,只需将代码放在setContentView(R.layout.new)下面......

((TextView)((FrameLayout)((LinearLayout)((ViewGroup) getWindow().getDecorView()).getChildAt(0)).getChildAt(0)).getChildAt(0)).setGravity(Gravity.CENTER);

希望这可以帮助.谢谢!

Answer 4

protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); // must come before setContentView
   setContentView(R.layout.activity_calculator); 
   getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title_bar);

将您的布​​局放在 layout/title_bar.xml 中

<?xml version="1.0" encoding="utf-8"?>
<TextView
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/myTitle"
  android:text="Custom Centered Title"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:textColor="@android:color/black"
  android:gravity="center"
   />

http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android-apps/2.2_r1.1/com/example/android/apis/app/CustomTitle.java