android2.3 api demo 学习系列（4）--App/Activity/Custom Title

android的标题栏默认是由android:lable定义的，android允许自定义标题栏，使用自定义的layou重新设置标题栏。

下面一步一步来实现自定义标题栏

1、定义标题栏layout

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/app_activity_custom_title_layout_screen"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><TextView android:id="@+id/app_activity_custom_title_layout_left_text"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:text="@string/app_activity_custom_title_left"/><TextView android:id="@+id/app_activity_custom_title_layout_right_text"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:text="@string/app_activity_custom_title_right" /></RelativeLayout>

2、在activity的onCreate方法中处理自定义标题栏

@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);setContentView(R.layout.app_activity_cuwtom_title_main_layout);getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.app_activity_custom_title);        final TextView leftText = (TextView) findViewById(R.id.app_activity_custom_title_layout_left_text);final TextView rightText = (TextView) findViewById(R.id.app_activity_custom_title_layout_right_text);final EditText leftTextEdit = (EditText) findViewById(R.id.app_activity_custom_title_main_layout_left_text_edit);final EditText rightTextEdit = (EditText) findViewById(R.id.app_activity_custom_title_main_layout_right_text_edit);Button leftButton = (Button) findViewById(R.id.app_activity_custom_title_main_layout_left_text_button);Button rightButton = (Button) findViewById(R.id.app_activity_custom_title_main_layout_right_text_button);        leftButton.setOnClickListener(new OnClickListener() {    public void onClick(View v) {        leftText.setText(leftTextEdit.getText());    }});rightButton.setOnClickListener(new OnClickListener() {    public void onClick(View v) {        rightText.setText(rightTextEdit.getText());    }});}

请不要忘记在android manifest中加入该activity

整个实现步骤很简单效果图如下

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