Android开发:定制Activity的标题栏(Titlebar)
效果图:
定义title栏的自定义布局 title.xml:
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:id="@+id/left_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:text="custom_title_left" /> <TextView android:id="@+id/right_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:text="custom_title_right" /> </RelativeLayout>
android:layout_width 和 android:layout_height都为wrap_content,因为这里用的相对布局,match_parent会把TextView都挤在一起。
MainAct.java:
package com.wyx.demo; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class MainAct extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);//必须出现在super.onCreate(savedInstanceState);之后,setContentView(R.layout.main);之前。其意思就是告诉系统,本程序要自己定义Titlebar; setContentView(R.layout.main); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,R.layout.title); //则必须出现在setContentView之后,其意思就是告诉系统,自定义的布局是R.layout.titlebar(即,我们前面编写的title.xml) final EditText leftTextEdit = (EditText)findViewById(R.id.left_tex_edit); final EditText rightTextEdit = (EditText)findViewById(R.id.right_tex_edit); final TextView leftText = (TextView)findViewById(R.id.left_text); final TextView rightText = (TextView)findViewById(R.id.right_text); Button leftbtn = (Button)findViewById(R.id.left_tex_button); Button rightbtn = (Button)findViewById(R.id.right_tex_button); leftbtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { leftText.setText(leftTextEdit.getText().toString()); } }); rightbtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { rightText.setText(rightTextEdit.getText().toString()); } }); } }
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