横竖屏切换

相关代码可以在D:\ThreeBao\hengshuping查找



布局切换的按钮

<ImageView

android:id="@+id/iv_stretch"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="right"

android:background="@drawable/selector_stretch"----任意一张图片

android:padding="5dp" />

复制D:\ThreeBao\hengshuping---的DensityUtil.java

在drawable下放图片stretch_focused.png，stretch.png，selector_stretch.xml

//java代码



main{

private String path = "http://movie.ks.js.cn/flv/other/1_0.mp4";
private Uri uri;
private VideoView mVideoView;
private ProgressBar pb;
private TextView downloadRateView, loadRateView;
private int screenWidth;
private int screenHeight;
private SensorManager sm;
private Sensor sensor;
private SensorManager sm1;
private Sensor sensor1;
private OrientationSensorListener2 listener1;

private boolean sensor_flag;
private boolean stretch_flag;


private Handler handler = new Handler(){  public void handleMessage(Message msg) {    switch (msg.what) {      case 888:        int orientation = msg.arg1;        if (orientation>45&&orientation<135) {        }else if (orientation>135&&orientation<225){        }else if (orientation>225&&orientation<315){          System.out.println("切换成横屏");          VideoViewBuffer.this.setRequestedOrientation(0);          sensor_flag = false;          stretch_flag =false;        }else if ((orientation>315&&orientation<360)||(orientation>0&&orientation<45)){          System.out.println("切换成竖屏");          VideoViewBuffer.this.setRequestedOrientation(1);          sensor_flag = true;          stretch_flag =true;        }        break;      default:        break;    }  };};

private OrientationSensorListener listener;
private View sf_play;
private ImageView iv_stretch;

oncreate{

requestWindowFeature(Window.FEATURE_NO_TITLE);
WindowManager windowManager = getWindowManager();
Display display = windowManager.getDefaultDisplay();
screenWidth = display.getWidth();
screenHeight = display.getHeight();

setContentView(R.layout.videobuffer);

initView();

//注册重力感应器  屏幕旋转
sm = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
sensor = sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
listener = new OrientationSensorListener(handler);
sm.registerListener(listener, sensor, SensorManager.SENSOR_DELAY_UI);

//根据  旋转之后 点击 符合之后 激活sm
sm1 = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
sensor1 = sm1.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
listener1 = new OrientationSensorListener2();
sm1.registerListener(listener1, sensor1, SensorManager.SENSOR_DELAY_UI);

}

@Override

protected void onResume() {

//sm.registerListener(listener, sensor, SensorManager.SENSOR_DELAY_UI);

super.onResume();

}

@SuppressLint("NewApi")

@Override

public void onConfigurationChanged(Configuration newConfig) {

super.onConfigurationChanged(newConfig);

System.out.println("screenHeight "+screenHeight);

System.out.println("screenWidth "+screenWidth);

if (stretch_flag) {

//切换成竖屏

LayoutParams params1 = new RelativeLayout.LayoutParams(screenHeight,DensityUtil.dip2px(this, 160));

sf_play.setLayoutParams(params1);

Toast.makeText(getApplicationContext(), "竖屏", 0).show();

}

else {

//切换成横屏

LayoutParams params1 = new RelativeLayout.LayoutParams(screenHeight,screenWidth);

sf_play.setLayoutParams(params1);

Toast.makeText(getApplicationContext(), "横屏", 0).show();

}

}

private void initView() {

sf_play = (VideoView1) findViewById(R.id.sf_play);

ll_playcontroller=(LinearLayout)findViewById(R.id.ll_playcontroller);

ll_playcontroller.getBackground().setAlpha(150);

iv_stretch = (ImageView) findViewById(R.id.iv_stretch);

iv_recordcourse_start = (ImageView) findViewById(R.id.iv_recordcourse_start);

iv_stretch.setOnClickListener(this);

iv_recordcourse_start.setOnClickListener(this);

}

@Override

public void onClick(View arg0) {

switch(arg0.getId()){

case R.id.iv_stretch:

sm.unregisterListener(listener);

Toast.makeText(getApplicationContext(), "点击切换屏幕", 0).show();

if (stretch_flag) {

stretch_flag = false;

//切换成横屏

MainActivity.this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

}else{

stretch_flag = true;

//切换成竖屏

MainActivity.this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

}

break;

}

}

/**

* 重力感应监听者

*/

public class OrientationSensorListener implements SensorEventListener {

private static final int _DATA_X = 0;

private static final int _DATA_Y = 1;

private static final int _DATA_Z = 2;

public static final int ORIENTATION_UNKNOWN = -1;

private Handler rotateHandler;

public OrientationSensorListener(Handler handler) {

rotateHandler = handler;

}

public void onAccuracyChanged(Sensor arg0, int arg1) {

// TODO Auto-generated method stub

}

public void onSensorChanged(SensorEvent event) {

if(sensor_flag!=stretch_flag) //只有两个不相同才开始监听行为

{

float[] values = event.values;

int orientation = ORIENTATION_UNKNOWN;

float X = -values[_DATA_X];

float Y = -values[_DATA_Y];

float Z = -values[_DATA_Z];

float magnitude = X*X + Y*Y;

// Don't trust the angle if the magnitude is small compared to the y value

if (magnitude * 4 >= Z*Z) {

//屏幕旋转时

float OneEightyOverPi = 57.29577957855f;

float angle = (float)Math.atan2(-Y, X) * OneEightyOverPi;

orientation = 90 - (int)Math.round(angle);

// normalize to 0 - 359 range

while (orientation >= 360) {

orientation -= 360;

}

while (orientation < 0) {

orientation += 360;

}

}

if (rotateHandler!=null) {

rotateHandler.obtainMessage(888, orientation, 0).sendToTarget();

}

}

}

}

public class OrientationSensorListener2 implements SensorEventListener {

private static final int _DATA_X = 0;

private static final int _DATA_Y = 1;

private static final int _DATA_Z = 2;

public static final int ORIENTATION_UNKNOWN = -1;

public void onAccuracyChanged(Sensor arg0, int arg1) {

// TODO Auto-generated method stub

}

public void onSensorChanged(SensorEvent event) {

float[] values = event.values;

int orientation = ORIENTATION_UNKNOWN;

float X = -values[_DATA_X];

float Y = -values[_DATA_Y];

float Z = -values[_DATA_Z];

/**

* 这一段据说是 android源码里面拿出来的计算 屏幕旋转的 不懂 先留着 万一以后懂了呢

*/

float magnitude = X*X + Y*Y;

// Don't trust the angle if the magnitude is small compared to the y value

if (magnitude * 4 >= Z*Z) {

//屏幕旋转时

float OneEightyOverPi = 57.29577957855f;

float angle = (float)Math.atan2(-Y, X) * OneEightyOverPi;

orientation = 90 - (int)Math.round(angle);

// normalize to 0 - 359 range

while (orientation >= 360) {

orientation -= 360;

}

while (orientation < 0) {

orientation += 360;

}

}

if (orientation>225&&orientation<315){ //横屏

sensor_flag = false;

}else if ((orientation>315&&orientation<360)||(orientation>0&&orientation<45)){ //竖屏

sensor_flag = true;

}

if(stretch_flag== sensor_flag){ //点击变成横屏 屏幕 也转横屏 激活

System.out.println("激活");

sm.registerListener(listener, sensor, SensorManager.SENSOR_DELAY_UI);

}

}

}

}

DensityUtil.java-创建

package com.daemon.viewlp;

import java.lang.reflect.Field;

import android.content.Context;

import android.util.DisplayMetrics;

import android.view.WindowManager;

public class DensityUtil {

/**

* 根据手机的分辨率�?dp 的单�?转成�?px(像素)

*/

public static int dip2px(Context context, float dpValue) {

final float scale = context.getResources().getDisplayMetrics().density;

return (int) (dpValue * scale + 0.5f);

}

/**

* 根据手机的分辨率�?px(像素) 的单�?转成�?dp

*/

public static int px2dip(Context context, float pxValue) {

final float scale = context.getResources().getDisplayMetrics().density;

return (int) (pxValue / scale + 0.5f);

}

public static DisplayMetrics getDisplayMetrics(Context context) {

DisplayMetrics dm = new DisplayMetrics();

WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);

wm.getDefaultDisplay().getMetrics(dm);

return dm;

}

/**

* 获取状�?栏高�?

*

* @param context

* @return

*/

public static int getStatuBarHeight(Context context) {

Class<?> c = null;

Object obj = null;

Field field = null;

int x = 0, sbar = 0;

try {

c = Class.forName("com.android.internal.R$dimen");

obj = c.newInstance();

field = c.getField("status_bar_height");

x = Integer.parseInt(field.get(obj).toString());

sbar = context.getResources().getDimensionPixelSize(x);

} catch (Exception e1) {

// e1.printStackTrace();

}

return sbar;

}

}