废话
今天我们接着上一章的内容继续讲如何集成百度地图AR SDK
上一章我讲到了配置MyApplication，那么这一章我就讲如何显示AR目标点，废话不多说，直接上代码。
创建布局
activity_ar.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="@+id/ar_camera_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<RelativeLayout
android:id="@+id/ar_poi_item_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"/>
</RelativeLayout>
可以看到AR的布局比较简单，里面就是两个RelativeLayout，一个用于显示相机，一个用于显示POI点
创建完成之后我们还需创建一个FindArCamGLView，待会会用到
layout_find_camera_view.xml
<?xml version="1.0" encoding="utf-8"?>
<map.baidu.ar.camera.find.FindArCamGLView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"/>
创建Activity
public class ARActivity extends AppCompatActivity implements ArPageListener {
private RelativeLayout mCameraLayout;
private RelativeLayout mArPoiItemLayout;
private FindArCamGLView mCameraGLView;
private SimpleSensor mSensor;
private List<PoiInfoImpl> mPoiInfoList;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ar);
fbv();
init();
event();
}
}
我们先重写onCreate方法，在里面做一些初始化操作
fbv
private void fbv() {
mCameraLayout = findViewById(R.id.ar_camera_layout);
mArPoiItemLayout = findViewById(R.id.ar_poi_item_layout);
mCameraGLView = (FindArCamGLView) LayoutInflater.from(this).inflate(R.layout.layout_find_camera_view, null);
}
这个获取控件
init
private void init() {
initData();
initCamera();
initSensor();
}
初始化各个功能
initData
private void initData(){
mPoiInfoList= new ArrayList<>();
ArLatLng arLatLng=new ArLatLng(22.8750032283,113.8906799763);
ArPoiInfo poiInfo=new ArPoiInfo();
poiInfo.name="测试AR点";
poiInfo.location=arLatLng;
PoiInfoImpl poiImpl=new PoiInfoImpl();
poiImpl.setPoiInfo(poiInfo);
mPoiInfoList.add(poiImpl);
}
这个是初始化数据点，也就是你要显示的AR目标点
initCamera
private void initCamera() {
mCameraGLView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
@Override
public void onLayoutChange(View view, int left, int top, int right, int bottom,
int oldLeft, int oldTop, int oldRight, int oldBottom) {
if (bottom == 0 || oldBottom == 0 || mCameraGLView == null) {
return;
}
RelativeLayout.LayoutParams params = TypeUtils.safeCast(
mCameraGLView.getLayoutParams(), RelativeLayout.LayoutParams.class);
if (params == null) {
return;
}
params.height = bottom - top;
mCameraGLView.requestLayout();
}
});
mCameraLayout.addView(mCameraGLView);
}
这个是初始化相机
initSensor
private void initSensor() {
if (mSensor == null) {
mSensor = new SimpleSensor(this, new HoldPositionListenerImp());
}
mSensor.startSensor();
}
private class HoldPositionListenerImp implements SimpleSensor.OnHoldPositionListener {
@Override
public void onOrientationWithRemap(float[] remapValue) {
if (mCameraGLView != null && mArPoiItemLayout != null) {
if (mPoiInfoList.size() <= 0) {
mArPoiItemLayout.setVisibility(View.GONE);
} else {
mCameraGLView.setFindArSensorState(remapValue, getLayoutInflater(),
mArPoiItemLayout, ARActivity.this, (ArrayList<PoiInfoImpl>) mPoiInfoList, ARActivity.this);
mArPoiItemLayout.setVisibility(View.VISIBLE);
}
}}
}
event
private void event() {
}
暂时不需要绑定事件，这个方法先空着
其他的方法
@Override
public void noPoiInScreen(boolean b) {
}
@Override
public void selectItem(Object o) {
}
private void finishCamInternal(){
if (mCameraGLView != null) {
mCameraGLView.stopCam();
mCameraLayout.removeAllViews();
mCameraGLView = null;
}
if (mArPoiItemLayout != null) {
mArPoiItemLayout.removeAllViews();
}
if (mSensor != null) {
mSensor.stopSensor();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
finishCamInternal();
}
finishCamInternal是销毁时调用的，移除视图，防止内存泄漏等问题
下面是ARActivity的全部源码
ARActivity.java
package com.yk.mchat.app.activity;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.RelativeLayout;
import com.yk.mchat.R;
import java.util.ArrayList;
import java.util.List;
import map.baidu.ar.ArPageListener;
import map.baidu.ar.camera.SimpleSensor;
import map.baidu.ar.camera.find.FindArCamGLView;
import map.baidu.ar.model.ArLatLng;
import map.baidu.ar.model.ArPoiInfo;
import map.baidu.ar.model.PoiInfoImpl;
import map.baidu.ar.utils.TypeUtils;
public class ARActivity extends AppCompatActivity implements ArPageListener {
private RelativeLayout mCameraLayout;
private RelativeLayout mArPoiItemLayout;
private FindArCamGLView mCameraGLView;
private SimpleSensor mSensor;
private List<PoiInfoImpl> mPoiInfoList;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ar);
fbv();
init();
event();
}
private void fbv() {
mCameraLayout = findViewById(R.id.ar_camera_layout);
mArPoiItemLayout = findViewById(R.id.ar_poi_item_layout);
mCameraGLView = (FindArCamGLView) LayoutInflater.from(this).inflate(R.layout.layout_find_camera_view, null);
}
private void init() {
initData();
initCamera();
initSensor();
}
private void initData(){
mPoiInfoList= new ArrayList<>();
ArLatLng arLatLng=new ArLatLng(22.8750032283,113.8906799763);
ArPoiInfo poiInfo=new ArPoiInfo();
poiInfo.name="测试AR点";
poiInfo.location=arLatLng;
PoiInfoImpl poiImpl=new PoiInfoImpl();
poiImpl.setPoiInfo(poiInfo);
mPoiInfoList.add(poiImpl);
}
private void initCamera() {
mCameraGLView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
@Override
public void onLayoutChange(View view, int left, int top, int right, int bottom,
int oldLeft, int oldTop, int oldRight, int oldBottom) {
if (bottom == 0 || oldBottom == 0 || mCameraGLView == null) {
return;
}
RelativeLayout.LayoutParams params = TypeUtils.safeCast(
mCameraGLView.getLayoutParams(), RelativeLayout.LayoutParams.class);
if (params == null) {
return;
}
params.height = bottom - top;
mCameraGLView.requestLayout();
}
});
mCameraLayout.addView(mCameraGLView);
}
private void initSensor() {
if (mSensor == null) {
mSensor = new SimpleSensor(this, new HoldPositionListenerImp());
}
mSensor.startSensor();
}
private void event() {
}
private class HoldPositionListenerImp implements SimpleSensor.OnHoldPositionListener {
@Override
public void onOrientationWithRemap(float[] remapValue) {
if (mCameraGLView != null && mArPoiItemLayout != null) {
if (mPoiInfoList.size() <= 0) {
mArPoiItemLayout.setVisibility(View.GONE);
} else {
mCameraGLView.setFindArSensorState(remapValue, getLayoutInflater(),
mArPoiItemLayout, ARActivity.this, (ArrayList<PoiInfoImpl>) mPoiInfoList, ARActivity.this);
mArPoiItemLayout.setVisibility(View.VISIBLE);
}
}
}
}
public LayoutInflater getLayoutInflater() {
return LayoutInflater.from(ARActivity.this).cloneInContext(ARActivity.this);
}
@Override
public void noPoiInScreen(boolean b) {
}
@Override
public void selectItem(Object o) {
}
private void finishCamInternal(){
if (mCameraGLView != null) {
mCameraGLView.stopCam();
mCameraLayout.removeAllViews();
mCameraGLView = null;
}
if (mArPoiItemLayout != null) {
mArPoiItemLayout.removeAllViews();
}
if (mSensor != null) {
mSensor.stopSensor();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
finishCamInternal();
}
}
这个就是集成百度地图AR识别SDK的全部内容，如果有不懂的或者是出问题的，可以评论私信我，希望大家能够喜欢。
