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setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);//設定螢幕不隨手機旋轉 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);//螢幕保持橫向 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);//螢幕保持直向 getRequestedOrientation();//獲取螢幕方向，0為橫向1為直向 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);//螢幕不關閉 示範 XML xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <TextView android:id="@+id/t1" android:layout_width="wrap_content" android:layout_height="16dp" android:text="Hello World!" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> android.support.constraint.ConstraintLayout> JAVA public class MainActivity extends AppCompatActivity { TextView t1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);//設定螢幕不隨手機旋轉 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);//螢幕保持橫向 // setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);//螢幕保持直向 // getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);//螢幕不關閉 t1=(TextView)findViewById(R.id.t1); t1.setText(""+getRequestedOrientation()); } } 展示 相關文章: [Android] Android 程式設計教學