android--自定義title

android默認的title只是顯示字符串，有時候為了吸引用戶的眼球或者操作方便，得搞點個性化的東西。

實現方法是在onCreate()方法開始，加入

requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(view); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title); 注意這三行代碼的順序不能隨意改變。

在R.layout.title

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <ImageView android:id="@+id/Titlhome" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_marginTop="3dp" android:src="@drawable/home"/> <TextView android:id="@+id/Titletext" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:textSize="21dp" android:layout_marginTop="3dp" android:textColor="#ffffffff" android:textStyle="bold"/> <Button android:id="@+id/TitleBackBtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/returnback" android:gravity="center" android:layout_marginTop="9dp" android:layout_alignParentRight="true"/> </RelativeLayout>
import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.view.KeyEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.Button; import android.widget.TextView; public class TitleBarBackActivity extends Activity { private TextView tvTitle; private Button btnBack; private Button btnNext; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { setTheme(R.style.CustomTheme); super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.main); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title); tvTitle =(TextView) findViewById(R.id.Titletext); tvTitle.setText("標題欄返回按鈕測試界面"); btnBack =(Button) findViewById(R.id.TitleBackBtn); btnBack.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub KeyEvent newEvent =new KeyEvent(KeyEvent.ACTION_DOWN,KeyEvent.KEYCODE_BACK); onKeyDown(KeyEvent.KEYCODE_BACK, newEvent); } }); btnNext =(Button) findViewById(R.id.Button); btnNext.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Intent intent =new Intent(); intent.setClass(TitleBarBackActivity.this,Next.class); startActivity(intent); } }); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) { // 按下的如果是BACK，同時沒有重復 askForOut(); return true; } return super.onKeyDown(keyCode, event); } private void askForOut() { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle("確定退出").setMessage("確定退出？").setPositiveButton("確定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { finish(); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.cancel(); } }).setCancelable(false).show(); } }為了讓title里內容能看清，設置下他的style

<?xml version="1.0" encoding="utf-8"?> <resources> <style name="CustomTheme" parent="android:Theme"> <item name="android:windowTitleSize">40dip</item> </style> </resources>
import android.app.Activity; import android.os.Bundle; import android.view.KeyEvent; import android.view.View; import android.view.Window; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; public class Next extends Activity { @Override public void onCreate(Bundle savedInstanceState) { setTheme(R.style.CustomTheme); super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.next); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title); tvTitle = (TextView) findViewById(R.id.Titletext); tvTitle.setText("標題欄返回按鈕測試界面2"); btnBack = (Button) findViewById(R.id.TitleBackBtn); btnBack.setOnClickListener(new OnClickListener() { public void onClick(View v) { System.out.println("Back .........."); KeyEvent newEvent = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_BACK); onKeyDown(KeyEvent.KEYCODE_BACK, newEvent); } }); } public Button btnBack; public TextView tvTitle; }
給個效果：