Android拍照，相册选择图片以及Android6.0权限管理

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1,AndroidManifest.xml权限如下:

<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

2,主要代码

package com.zj.camreainandroidm;import android.content.ContentResolver;import android.content.Intent;import android.content.pm.PackageManager;import android.database.Cursor;import android.graphics.Bitmap;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.support.annotation.NonNull;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.widget.ImageView;import android.widget.Toast;import java.io.File;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.Date;public class MainActivity extends AppCompatActivity {    private ImageView imageView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        imageView = (ImageView)findViewById(R.id.image);        findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if (PermissionUtils.isCameraPermission(MainActivity.this, 0x007))                    byCamera();            }        });        findViewById(R.id.album).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if (PermissionUtils.isCameraPermission(MainActivity.this, 0x009))                    //打开相册                    openAlbum();            }        });    }    //打开相册    private  void  openAlbum(){        Intent intent = new Intent("android.intent.action.GET_CONTENT");        intent.setType("image/*");        startActivityForResult(intent, 0x006); // 打开相册    }    //请求权限回调    @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {        switch (requestCode) {            case 0x007:                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {                    byCamera();                } else {                    Toast.makeText(this, "拍照权限被拒绝", Toast.LENGTH_SHORT).show();                }                break;            case 0x009:                if (grantResults[1] == PackageManager.PERMISSION_GRANTED) {                    byCamera();                } else {                    Toast.makeText(this, "拍照权限被拒绝", Toast.LENGTH_SHORT).show();                }                break;            default:                super.onRequestPermissionsResult(requestCode, permissions, grantResults);        }    }    private String imagePath;    //打开相机    public void byCamera() {        String savePath = "";        String storageState = Environment.getExternalStorageState();        if (storageState.equals(Environment.MEDIA_MOUNTED)) {            savePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/camera/";            File savedir = new File(savePath);            if (!savedir.exists()) {                savedir.mkdirs();            }        }        // 没有挂载SD卡，无法保存文件        if (savePath == null || "".equals(savePath)) {            System.out.println("无法保存照片，请检查SD卡是否挂载");            return;        }        String timeStamp = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());        //照片命名        String fileName = timeStamp + ".jpg";        File out = new File(savePath, fileName);        Uri uri = Uri.fromFile(out);        //该照片的绝对路径        imagePath = savePath + fileName;        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);        intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);        startActivityForResult(intent, 0x008);    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if (requestCode == 8) {            if(imagePath!=null && resultCode == RESULT_OK){                Log.e(">>>>>>>>>>....",""+imagePath);                imageView.setImageBitmap(PermissionUtils.getBitmapByPath(imagePath,480,800));            }        }        if(requestCode==6){            //外界的程序访问ContentProvider所提供数据 可以通过ContentResolver接口            ContentResolver resolver = getContentResolver();            Uri originalUri = data.getData();//获得图片的uri            Log.e("uri",">>>>>>>>>>...."+originalUri);            Bitmap bm = null;            try {                //显得到bitmap图片                bm = MediaStore.Images.Media.getBitmap(resolver, originalUri);                //获取图片的路径                String[] proj = {MediaStore.Images.Media.DATA};                Cursor cursor = managedQuery(originalUri, proj, null, null, null);                //获得用户选择的图片的索引值                int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);                //将光标移至开头 ，这个很重要，不小心很容易引起越界                cursor.moveToFirst();                //最后根据索引值获取图片路径                String path = cursor.getString(column_index);                Log.e("uri",">>>>>>>>>>...."+PermissionUtils.getBitmapByPath(path, 480, 800));                //绑定图片到Imageview                imageView.setImageBitmap(PermissionUtils.getBitmapByPath(path, 480, 800));                //转换成file文件,上传服务器uploadImg(file)               /* File file=new File(path);                Log.e("uri",">>>>>>>>>>...."+file);                uploadImg(file);*/            } catch (IOException e) {                e.printStackTrace();            }        }    }}

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