彻底解决android拍照后无法显示的问题

落日映苍穹つ 2023-10-10 08:02 61阅读 0赞

这是对上篇"android 图片拍照,相册选图,剪切并显示"的文章之后的 改进

上一篇文章虽然能解决图片的拍照剪切以及显示,但是发现他有一个缺点, 如果该程序单独运行,貌似没有任何问题, 但是把它整合到项目中后,发现有时在小米手机或者三星手机上面仍旧会失败, 原因可能是 拍照后导致内存不足,从而拍照后返回的时候,没有返回数据,导致图片显示失败,当然这是一定的概率事件.

针对这一情况做如下改变,代码如下:

package com.kuiboo.xiaoyao.Activity;
    
    import android.app.Activity;
    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.util.Log;
    import android.view.View;
    import android.widget.Toast;
    
    import com.kuiboo.xiaoyao.R;
    import com.kuiboo.xiaoyao.util.ActionSheetDialog;
    import com.kuiboo.xiaoyao.util.CircleImageView;
    
    import java.io.BufferedOutputStream;
    import java.io.ByteArrayOutputStream;
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.InputStream;
    import java.util.Random;
    
    public class EditMineActivity extends Activity {
        private static final String TAG = "MainActivity";
        private static final int TAKE_SMALL_PICTURE = 2;
        private static final int CROP_BIG_PICTURE = 3;
        private static final int CROP_SMALL_PICTURE = 4;
        private static final int CHOOSE_SMALL_PICTURE = 6;
        private static final String IMAGE_FILE_LOCATION = "file:///sdcard/temp.jpg";
        private Uri imageUri;//存储图片的uri地址
        CircleImageView iv;//自定义圆形图片,或者使用第三方库,或者基本ImageView都可以
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_mine_edit);
            Log.e("执行了几次","aaa");
            iv= (CircleImageView) findViewById(R.id.photoView);
            iv.setBorderWidth(5);
            imageUri = Uri.parse(IMAGE_FILE_LOCATION);
            iv.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    new ActionSheetDialog(EditMineActivity.this).Builder()
                            .addSheetItem("拍照", ActionSheetDialog.SheetItemColor.BULE, new ActionSheetDialog.OnSheetItemClickListener() {
                                @Override
                                public void onClick(int witch) {
                                    openCamera();
                                }
                            }).addSheetItem("打开相册", ActionSheetDialog.SheetItemColor.BULE, new ActionSheetDialog.OnSheetItemClickListener() {
                        @Override
                        public void onClick(int witch) {
                            openPic();
                        }
                    }).show();
                }
            });
        }
    
        //获取相册图片
        private void openPic() {
            Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
            intent.setType("image/*");
            intent.putExtra("crop", "true");
            intent.putExtra("aspectX", 2);
            intent.putExtra("aspectY", 1);
            intent.putExtra("outputX", 200);
            intent.putExtra("outputY", 100);
            intent.putExtra("scale", true);
            intent.putExtra("return-data", true);
            intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
            intent.putExtra("noFaceDetection", true);
            startActivityForResult(intent, CHOOSE_SMALL_PICTURE);
        }
    
        //获取拍照小图片
        private void openCamera() {
            if(imageUri == null) {
                Log.e(TAG, "图片uri不能为空!");
            }
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
            startActivityForResult(intent, TAKE_SMALL_PICTURE);
        }
        //剪切
        private void cropImageUri(Uri uri, int outputX, int outputY, int requestCode){
            Intent intent = new Intent("com.android.camera.action.CROP");
            intent.setDataAndType(uri, "image/*");
            intent.putExtra("crop", "true");
            intent.putExtra("aspectX", 2);
            intent.putExtra("aspectY", 1);
            intent.putExtra("outputX", outputX);
            intent.putExtra("outputY", outputY);
            intent.putExtra("scale", true);
            intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
            intent.putExtra("return-data", false);
            intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
            intent.putExtra("noFaceDetection", true); // 没有人脸识别
            startActivityForResult(intent, requestCode);
        }
    
        private Bitmap decodeUriAsBitmap(Uri uri){
            Bitmap bitmap = null;
            try {
                bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri));
            } catch (FileNotFoundException e) {
                e.printStackTrace();
                return null;
            }
            return bitmap;
        }
    
        @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
            super.onActivityResult(requestCode, resultCode, data);
            if(resultCode != Activity.RESULT_OK){
                Log.e(TAG, "requestCode = " + requestCode);
                Log.e(TAG, "resultCode = " + resultCode);
                Log.e(TAG, "data = " + data);
                return;
            }else{
                switch (requestCode) {
    //                case CROP_BIG_PICTURE://剪切大图
    //                    if(imageUri != null){
    //                        Bitmap bitmap = decodeUriAsBitmap(imageUri);
    //                        iv.setImageBitmap(bitmap);
    //                    }
    //                    break;
                    case TAKE_SMALL_PICTURE://拍照
                        cropImageUri(imageUri, 260, 200, CROP_SMALL_PICTURE);
                        break;
                    case CROP_SMALL_PICTURE://剪切小图
                        if(imageUri != null){
                            Bitmap bitmap = decodeUriAsBitmap(imageUri);
                            iv.setImageBitmap(bitmap);
                        }else{
                            Log.e(TAG, "CROP_SMALL_PICTURE: data = " + data);
                        }
                        break;
    
                    case CHOOSE_SMALL_PICTURE://相册选择
                        if(data != null){
                            Bitmap bitmap = data.getParcelableExtra("data");
                            iv.setImageBitmap(bitmap);
                        }else{
                            Log.e(TAG, "CHOOSE_SMALL_PICTURE: data = " + data);
                        }
                        break;
                }
            }
        }
    }

效果图就不上了 ,和上一篇文章效果图一样.

转载于:https://www.cnblogs.com/android-zcq/p/5452977.html