RK Android7.1 双屏显示旋转方向

 

 一.参考 Rockchip_Developer_Guide_Dual_Display_Rotation_Direction_Debugging_CN.pdf

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persist.sys.rotation.einit = 0 / 1 / 2 / 3： persist.sys.rotation.efull = false / true： 备注：当主副屏宽高比不同时，persist.sys.rotation.efull 为 false，则副屏会出现黑边， 所以这种情况，建议将 persist.sys.rotation.efull 设置为 true，些许的拉伸不会影响显示效果。

二.frameworks\base\services\core\java\com\android\server\display\LogicalDisplay.java

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public DisplayInfo getDisplayInfoLocked() {     if (mInfo == null) {         mInfo = new DisplayInfo();         mInfo.copyFrom(mBaseDisplayInfo);         if (mOverrideDisplayInfo != null) {             mInfo.appWidth = mOverrideDisplayInfo.appWidth;             mInfo.appHeight = mOverrideDisplayInfo.appHeight;             mInfo.smallestNominalAppWidth = mOverrideDisplayInfo.smallestNominalAppWidth;             mInfo.smallestNominalAppHeight = mOverrideDisplayInfo.smallestNominalAppHeight;             mInfo.largestNominalAppWidth = mOverrideDisplayInfo.largestNominalAppWidth;             mInfo.largestNominalAppHeight = mOverrideDisplayInfo.largestNominalAppHeight;             mInfo.logicalWidth = mOverrideDisplayInfo.logicalWidth;             mInfo.logicalHeight = mOverrideDisplayInfo.logicalHeight;             mInfo.overscanLeft = mOverrideDisplayInfo.overscanLeft;             mInfo.overscanTop = mOverrideDisplayInfo.overscanTop;             mInfo.overscanRight = mOverrideDisplayInfo.overscanRight;             mInfo.overscanBottom = mOverrideDisplayInfo.overscanBottom;             mInfo.rotation = mOverrideDisplayInfo.rotation;             mInfo.logicalDensityDpi = mOverrideDisplayInfo.logicalDensityDpi;             mInfo.physicalXDpi = mOverrideDisplayInfo.physicalXDpi;             mInfo.physicalYDpi = mOverrideDisplayInfo.physicalYDpi;         }         if(mDisplayId!=Display.DEFAULT_DISPLAY){             String rotation = SystemProperties.get("persist.sys.rotation.einit","0");             if(Integer.valueOf(rotation)%2!=0) {                     mInfo.appWidth = mPrimaryDisplayDeviceInfo.height;                 mInfo.appHeight = mPrimaryDisplayDeviceInfo.width;                 mInfo.logicalWidth = mPrimaryDisplayDeviceInfo.height;                 mInfo.logicalHeight=mPrimaryDisplayDeviceInfo.width;               }else{                 mInfo.appWidth = mPrimaryDisplayDeviceInfo.width;                 mInfo.appHeight = mPrimaryDisplayDeviceInfo.height;                 mInfo.logicalWidth = mPrimaryDisplayDeviceInfo.width;                 mInfo.logicalHeight=mPrimaryDisplayDeviceInfo.height;             }         }     }

 双屏属性

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# Dual - display configuration # 主屏 eDP sys.hwc.device.primary=eDP # 副屏 sys.hwc.device.extend=LVDS #persist.sys.framebuffer.main=800x1280 persist.sys.resolution.main=1920x1080 persist.sys.resolution.aux=800x1280   #  副屏是否全屏显示 persist.sys.rotation.efull = true   # 主屏的旋转方向(0 90 180 270) ro.sf.hwrotation=0   # 副屏输出旋转方向对应 0 / 90 / 180 / 270(0 1 2 3) +persist.sys.rotation.einit =1   #副屏也随着 g-sensor 旋转（只关注方向，黑边不关注） ro.sys.rotation.sensor =false   // 主副屏orientaion是否相同 ro.same.orientation=false   // 副屏是否随主屏旋转 ro.rotation.external=false

　　

 三.写了个apk 控制属性 

3.1.布局

+ View Code?

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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical"     android:gravity="center"     tools:context="com.gatsby.systemdisplay.MainActivity" >                <Button         android:id="@+id/btn1"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="0"         android:textSize="32sp" />       <Button         android:id="@+id/btn2"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="90"         android:textSize="32sp" />       <Button         android:id="@+id/btn3"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="180"         android:textSize="32sp" />       <Button         android:id="@+id/btn4"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="270"         android:textSize="32sp" />           <TextView         android:id="@+id/text1"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="@string/hello_world"         android:textSize="200sp" />   </LinearLayout>

3.2.code

+ View Code?

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package com.gatsby.systemdisplay;   import java.io.DataInputStream; import java.io.DataOutputStream; import java.lang.reflect.Method;   import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView;   public class MainActivity extends Activity implements OnClickListener {     Button btn1, btn2, btn3, btn4;     TextView text1;     String rotation_einit;       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);           btn1 = (Button) findViewById(R.id.btn1);         btn2 = (Button) findViewById(R.id.btn2);         btn3 = (Button) findViewById(R.id.btn3);         btn4 = (Button) findViewById(R.id.btn4);         text1 = (TextView) findViewById(R.id.text1);           btn1.setOnClickListener(this);         btn2.setOnClickListener(this);         btn3.setOnClickListener(this);         btn4.setOnClickListener(this);           rotation_einit = getProperty("persist.sys.rotation.einit");         text1.setText(rotation_einit);     }       @Override     public void onClick(View v) {         // TODO Auto-generated method stub         switch (v.getId()) {         case R.id.btn1:             setProperty("persist.sys.rotation.einit", "0");             RootCommand("reboot");             break;         case R.id.btn2:             setProperty("persist.sys.rotation.einit", "1");             RootCommand("reboot");             break;         case R.id.btn3:             setProperty("persist.sys.rotation.einit", "2");             RootCommand("reboot");             break;         case R.id.btn4:             setProperty("persist.sys.rotation.einit", "3");             RootCommand("reboot");             break;         }     }       @SuppressWarnings("finally")     public String getProperty(String key) {         String value = "unknown";         try {             Class<?> c = Class.forName("android.os.SystemProperties");             Method get = c.getMethod("get", String.class, String.class);             value = (String) (get.invoke(c, key, "unknown"));         } catch (Exception e) {             e.printStackTrace();         } finally {             return value;         }     }       public void setProperty(String key, String value) {         try {             Class<?> c = Class.forName("android.os.SystemProperties");             Method set = c.getMethod("set", String.class, String.class);             set.invoke(c, key, value);         } catch (Exception e) {             e.printStackTrace();         }     }       public void RootCommand(String cmd) {         Process process = null;         DataOutputStream os = null;         DataInputStream is = null;         try {             process = Runtime.getRuntime().exec("su");             os = new DataOutputStream(process.getOutputStream());             os.writeBytes(cmd + "\n");             os.writeBytes("exit\n");             os.flush();             int aa = process.waitFor();             is = new DataInputStream(process.getInputStream());             byte[] buffer = new byte[is.available()];             is.read(buffer);             String out = new String(buffer);         } catch (Exception e) {             e.printStackTrace();         } finally {             try {                 if (os != null) {                     os.close();                 }                 if (is != null) {                     is.close();                 }                 process.destroy();             } catch (Exception e) {             }         }     } }