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Android打开相机和打开相册

  • 时间:2016-08-15
  • 发布:青岛android培训
  • 来源:青岛android培训

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, null, ull);

//

// 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),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;

}

}

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