调用系统裁剪 并生成图片

package com.xuganwen.sharesdk;

import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class MainActivity extends AppCompatActivity {

    private Button btn;
    private ImageView image;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn=(Button)findViewById(R.id.btn);
        image=(ImageView)findViewById(R.id.image);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent();
                intent.setType("image/*");
                intent.setAction(Intent.ACTION_PICK);
                //intent.setAction(Intent.ACTION_GET_CONTENT);
                MainActivity.this.startActivityForResult(intent,100);
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode){
            case 100:
            Intent intent = new Intent("com.android.camera.action.CROP");
            intent.setDataAndType(data.getData(), "image/*");
            // 下面这个crop=true是设置在开启的Intent中设置显示的VIEW可裁剪
            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", 150);
            intent.putExtra("outputY", 150);
            intent.putExtra("return-data", true);

//        intent.putExtra("scale", true);  //保留比例

            startActivityForResult(intent, 3);
                break;
            case 3:
                if (data != null) {
                    /*Bundle extras = data.getExtras();
                    if (extras != null) {
                        Bitmap bitmap = (Bitmap) extras.get("data");
                        String path = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
                        String picUrl = saveAndgetMyBitmap(path, bitmap);
                        setImg();
                        new MyTask().execute();

                    }*/

                    Bundle bundle=data.getExtras();
                    Bitmap bitmap=(Bitmap)bundle.get("data");
                    image.setImageBitmap(bitmap);
                    //image.invalidate();
                }
                break;
        }
    }

    public static String saveAndgetMyBitmap(String bitName, Bitmap mBitmap) {
        File file = null;
        if (Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED)) {
            file = new File(Environment.getExternalStorageDirectory(), bitName + ".jpg");
            FileOutputStream fOut = null;
            try {
                fOut = new FileOutputStream(file);
            }
            catch (FileNotFoundException e) {
                e.printStackTrace();
            }
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
            try {

                fOut.flush();
            }
            catch (IOException e) {
                e.printStackTrace();
            }
            try {
                fOut.close();
            }
            catch (IOException e) {
                e.printStackTrace();
            }

            // File file = new File(path);
            // path = file.getPath().toString();
        }
        return file.getAbsolutePath().toString();
    }
}