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Android 发布时间：2022-04-28 发布网站：大佬教程 code.js-code.com

大佬教程收集整理的这篇文章主要介绍了Android打开相机和相册实例代码，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

本文实例为大家分享了Android打开相机和相册具体代码，供大家参考，具体内容如下

打开相机

 /**
   * 选择相机
   */

  private void showCamera() {
    // 跳转到系统照相机
    Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (cameraIntent.resolveActivity(getPackageManager()) != null) {
      // 设置系统相机拍照后的输出路径
      // 创建临时文件
      mTmpFile = OtherUtils.createFile(getApplicationContext());

      cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(mTmpFilE));
      startActivityForResult(cameraIntent,requEST_CAMERA);
    } else {
      Toast.makeText(getApplicationContext(),R.String.msg_no_camera,Toast.LENGTH_SHORT).show();
    }

  }

打开相册

Intent albumIntent = new Intent(Intent.ACTION_PICK,null);
    albumIntent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");
    startActivityForResult(albumIntent,requEST_ALBUM_OK);

onActivityResult

 @Override
  protected void onActivityResult(int requestCode,int resultCode,Intent data) {
    super.onActivityResult(requestCode,resultCode,data);

    switch (requestCodE) {
      case requEST_CAMERA:
        //请求相机
        if (mTmpFile != null) {
          Log.d(tag,"onActivityResult: 请求相机： " + mTmpFile.getAbsolutePath());

          PiCasso.with(this).load(mTmpFilE).centerCrop().resize(OtherUtils.dip2px(this,100),OtherUtils.dip2px(this,100))
              .error(R.mipmap.pictures_no).into(mIvDispaly);
        }
        break;
      case requEST_ALBUM_OK:
        Log.d(tag,"onActivityResult:相册 " + data.getData().toString());
        ContentResolver resolver = getContentResolver();

        try {
          InputStream inputStream = resolver.openInputStream(data.getData());

          Bitmap bitmap = BitmapFactory.decodeStream(inputStream);

          mIvDispaly.setImageBitmap(bitmap);

        } catch (FileNotFoundException E) {


          e.printStackTrace();
        }

        //        cursor query = resolver.query(data.getData(),null,null);
//
//        String str = null;
//        while (query.moveToNext()) {
//          Log.d(tag,"onActivityResult:数量 " + query.getCount());
//          str =query.getString(query.getcolumnIndex(MediaStore.Images.Media.DATA));
//          Log.d(tag,"onActivityResult: 列名" + query.getString(query.getcolumnIndex(MediaStore.Images.Media.DATA)));
//        }
//        query.close();
//        PiCasso.with(this).load(new File(str)).centerCrop().resize(OtherUtils.dip2px(this,100))
//            .error(R.mipmap.pictures_no).into(mIvDispaly);
        break;

    }
  }

OtherUtils

import android.content.Context;
import android.os.Environment;

import java.io.File;
import java.util.Date;

/**
 * Created by 刘楠 on 2016/7/20 0020.22:37
 */
public class OtherUtils {
  public static int dip2px(Context context,float dpvalue) {
    final float scale = context.getresources().getDisplaymetrics().density;
    return (int) (dpValue * scale + 0.5f);
  }

  public static int px2dip(Context context,float pxvalue) {
    final float scale = context.getresources().getDisplaymetrics().density;
    return (int) (pxValue / scale + 0.5f);
  }

  /**
   * 获取拍照相片存储文件
   * @param context
   * @return
   */
  public static File createFile(Context context){
    File file;
    if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
      String timestamp = String.valueOf(new Date().getTime());
      file = new File(Environment.getExternalStorageDirectory() +
          File.separator + timestamp+".jpg");
    }else{
      File cacheDir = context.getCacheDir();
      String timestamp = String.valueOf(new Date().getTime());
      file = new File(cacheDir,timestamp+".jpg");
    }
    return file;
  }

}