From Android Studio——基于第三方SDK：Face++平台的面部识别，用户通过自拍完成注册、登录。.zip

package com.itgungnir.activity; import android.annotation.SuppressLint; import android.app.Activity; import android.content.Intent; import android.database.sqlite.SQLiteDatabase; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Paint; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.Toast; import com.itgungnir.SharedData; import com.itgungnir.tools.DBHelper; import com.itgungnir.tools.FaceppUtil; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; public class RegisterActivity extends Activity implements View.OnClickListener { // 全局变量——控件 private ImageView photo; private EditText inputname; private Button abort; private Button confirm; private RelativeLayout progress; // 进度条 // 全局变量——Handler private Handler detectFaceHandler; // 检测完成后传入此Handler private Handler createPersonHandler; // 全局变量——其他 private Bitmap photoBm; private Paint paint; private String person_name; private String face_id; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_register); initView(); initData(); initEvent(); } private void initView() { photo = (ImageView) findViewById(R.id.find_register_iv_photo); inputname = (EditText) findViewById(R.id.find_register_et_inputname); abort = (Button) findViewById(R.id.find_register_btn_abort); confirm = (Button) findViewById(R.id.find_register_btn_confirm); progress = (RelativeLayout) findViewById(R.id.find_register_rvly_progress); inputname.setEnabled(false); abort.setEnabled(false); confirm.setEnabled(false); } private void initData() { paint = new Paint(); progress.setVisibility(View.VISIBLE); // 初始化本页面中的所有Handler initHandlers(); // 压缩图片（Face++ SDK最大容忍的图片大小是3M）并放到ImageView中 String filePath = getIntent().getStringExtra("filePath"); photoBm = SharedData.compressPicture(filePath); // 获取检测的结果，在图片上识别人脸，画方框标出人脸 FaceppUtil.detectFace(RegisterActivity.this, photoBm, new FaceppUtil.Callback() { @Override public void success(Object result) { Message msg = Message.obtain(); msg.what = SharedData.OPERATION_SUCCESS; msg.obj = result; detectFaceHandler.sendMessage(msg); } @Override public void error(String warningStr) { Message msg = Message.obtain(); msg.what = SharedData.OPERATION_ERROR; msg.obj = warningStr; detectFaceHandler.sendMessage(msg); } }); } @SuppressLint("HandlerLeak") private void initHandlers() { // 检测人脸的Hanlder detectFaceHandler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case SharedData.OPERATION_SUCCESS: JSONObject jsonObject = (JSONObject) msg.obj; // 解析传回来的JSONObject对象，绘制人脸位置的框（在ptotoBm中绘制） Bitmap bitmap = Bitmap.createBitmap(photoBm.getWidth(), photoBm.getHeight(), photoBm.getConfig()); Canvas canvas = new Canvas(bitmap); canvas.drawBitmap(photoBm, 0, 0, null); try { JSONArray jsonArray = jsonObject.getJSONArray("face"); if (jsonArray == null) { SharedData.popToast(RegisterActivity.this, "人脸识别失败，请重新拍照！"); } else { if (jsonArray.length() == 0) { SharedData.popToast(RegisterActivity.this, "人脸识别失败，请重新拍照！"); } else { JSONObject face = jsonArray.getJSONObject(0); // 直接获取第一张脸 // 获取face_id face_id = face.getString("face_id"); // 获取人脸位置的JSONObject JSONObject pos = face.getJSONObject("position"); // 获取脸中心点的X、Y坐标在总宽度/高度上占的比重 float x = (float) pos.getJSONObject("center").getDouble("x"); float y = (float) pos.getJSONObject("center").getDouble("y"); // 获取脸的宽度和高度 float w = (float) pos.getDouble("width"); float h = (float) pos.getDouble("height"); // 将百分比转化成实际的像素值 x = x / 100 * bitmap.getWidth(); y = y / 100 * bitmap.getHeight(); w = w / 100 * bitmap.getWidth(); h = h / 100 * bitmap.getHeight(); // 在Canvas画布上画一个矩形标记出脸部的位置 paint.setColor(0xFFFFFFFF); paint.setStrokeWidth(3); canvas.drawLine(x - w / 2, y - h / 2, x - w / 2, y + h / 2, paint); canvas.drawLine(x - w / 2, y - h / 2, x + w / 2, y - h / 2, paint); canvas.drawLine(x + w / 2, y - h / 2, x + w / 2, y + h / 2, paint); canvas.drawLine(x - w / 2, y + h / 2, x + w / 2, y + h / 2, paint); // 将绘制好的矩形添加到要显示的BitMap上 photoBm = bitmap; photo.setImageBitmap(photoBm); // 重置控件状态 inputname.setEnabled(true); confirm.setEnabled(true); } } } catch (JSONException e) { SharedData.popToast(RegisterActivity.this, "人脸识别失败，请重新拍照！"); abort.setEnabled(true); } photo.setImageBitmap(photoBm); break; case SharedData.OPERATION_ERROR: String errorMsg = (String) msg.obj; SharedData.popToast(RegisterActivity.this, errorMsg); break; } progress.setVisibility(View.GONE); abort.setEnabled(true); super.handleMessage(msg); } }; // 创建Person的Handler createPersonHandler = new Handler() { @Override public void handleMessage(Message msg) { // 2、如果添加person成功，则将用户信息添加到SQLite数据库中（存储face_id和person_name） switch (msg.what) { case SharedData.OPERATION_SUCCESS: J