简单的相机相册裁剪

package jiaoyibo.bawei.com.touxiang;

import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.PopupWindow;
import android.widget.TextView;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import butterknife.BindView;
import butterknife.ButterKnife;

public class MainActivity extends AppCompatActivity {

    @BindView(R.id.image)
    ImageView image;
    private PopupWindow window;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);
        image.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                View view = LayoutInflater.from(MainActivity.this).inflate(R.layout.popuwin, null);
                window = new PopupWindow(view, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);
                window.setContentView(view);
                window.setOutsideTouchable(true);
                TextView xj = view.findViewById(R.id.xj);
                TextView xc = view.findViewById(R.id.xc);
                TextView qx = view.findViewById(R.id.qx);
                xj.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent2 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                        intent2.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment.getExternalStorageDirectory(),
                                "head.jpg")));
                        startActivityForResult(intent2, 2);//采用ForResult打开
                        window.dismiss();
                    }
                });
                xc.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent1 = new Intent(Intent.ACTION_PICK, null);
                        intent1.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
                        startActivityForResult(intent1, 1);
                        window.dismiss();
                    }
                });
                qx.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        window.dismiss();
                    }
                });
                View inflate = LayoutInflater.from(MainActivity.this).inflate(R.layout.activity_main, null);
                window.showAtLocation(inflate, Gravity.BOTTOM, 0, 0);

            }


        });
    }

    /**
     * 调用系统的裁剪
     *
     * @param uri
     */
    public void cropPhoto(Uri uri) {
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri, "image/*");
        intent.putExtra("crop", "true");
        // aspectX aspectY 是宽高的比例
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        // outputX outputY 是裁剪图片宽高
        intent.putExtra("outputX", 127);
        intent.putExtra("outputY", 127);
        intent.putExtra("scale", true);
        intent.putExtra("noFaceDetection", false);//不启用人脸识别
        intent.putExtra("return-data", true);
        startActivityForResult(intent, 3);
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case 1:
                if (resultCode == RESULT_OK) {
                    cropPhoto(data.getData());//裁剪图片
                }
                break;
            case 2:
                if (resultCode == RESULT_OK) {
                    String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/head.jpg";
                    File temp = new File(Environment.getExternalStorageDirectory()
                            + "/head.jpg");
                    Bitmap bitmap = BitmapFactory.decodeFile(path);
                    image.setImageBitmap(bitmap);
                    cropPhoto(Uri.fromFile(temp));//裁剪图片
                }
                break;
            case 3:
                if (data != null) {
                    Bundle extras = data.getExtras();
                    if (extras == null) {
                        return;
                    }
                    Bitmap head = extras.getParcelable("data");
                    image.setImageBitmap(head);
                    setPicToView(head);
                    String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/head.jpg";
                }


                break;
        }

    }
    //保存到SD卡
    private void setPicToView(Bitmap mBitmap) {
        File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/head.jpg");

        try {
            BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file));
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos);// 把数据写入文件
            //关闭流
            bos.flush();
            bos.close();
        } catch (IOException e) {
            e.printStackTrace();

        }
    }
}