1. 修改getActionBar()的使用方式:
public class MainActivity extends ActionBarActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); setContentView(R.layout.activity_main); ActionBar actionBar = this.getSupportActionBar(); if(actionBar != null){ actionBar.setTitle("XXXXX "); } }
2. 下载android support library(如果已完成,跳过):
3.下载完成后需导入到android studio的module中:
a. 打开 module setting:
b. 在弹出的Project Structure对话框中激活Dependencies选项卡,点击右侧的”+“按钮:
c. 在对话框选择”Library Depandency“:
d. 最后选择你需要的库,点击确定即可:
4. 并将ActionBar都选择android.support.v7.app里面的,最后终于将错误修复了。完整的代码如下:
import android.support.v7.app.ActionBar; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.WindowManager;
5. style.xml code:
<resources> <!-- Base application theme. --> <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"> <!-- Customize your theme here. --> </style> </resources>
6. Mainfest code:
<application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name=".MainActivity" android:label="@string/app_name" android:theme="@style/Theme.AppCompat"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application>