剪切图片-扩展android 选择图片(从手机照相机或手机图片)

最新推荐文章于 2023-04-06 15:21:22 发布

原创最新推荐文章于 2023-04-06 15:21:22 发布 · 61 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#android #docrop

android 专栏收录该内容

77 篇文章

订阅专栏

本文介绍如何在Android应用中实现从手机相机或图片库选择图片的功能，包括使用Intent进行操作，处理不同相机应用的兼容性问题，并提供自定义裁剪功能。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

这里给出关键部分代码，其余和文章《android 选择图片(从手机照相机或手机图片)》类似

 private void doCrop() {
		final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();
    	
    	Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setType("image/*");
        
        List<ResolveInfo> list = getPackageManager().queryIntentActivities( intent, 0 );
        
        int size = list.size();
        
        if (size == 0) {	        
        	Toast.makeText(this, "Can not find image crop app", Toast.LENGTH_SHORT).show();
        	
            return;
        } else {
        	intent.setData(mImageCaptureUri);
            
            intent.putExtra("outputX", 200);
            intent.putExtra("outputY", 200);
            intent.putExtra("aspectX", 1);
            intent.putExtra("aspectY", 1);
            intent.putExtra("scale", true);
            intent.putExtra("return-data", true);
            
        	if (size == 1) {
        		Intent i 		= new Intent(intent);
	        	ResolveInfo res	= list.get(0);
	        	
	        	i.setComponent( new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
	        	
	        	startActivityForResult(i, CROP_FROM_CAMERA);
        	} else {
		        for (ResolveInfo res : list) {
		        	final CropOption co = new CropOption();
		        	
		        	co.title 	= getPackageManager().getApplicationLabel(res.activityInfo.applicationInfo);
		        	co.icon		= getPackageManager().getApplicationIcon(res.activityInfo.applicationInfo);
		        	co.appIntent= new Intent(intent);
		        	
		        	co.appIntent.setComponent( new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
		        	
		            cropOptions.add(co);
		        }
	        
		        CropOptionAdapter adapter = new CropOptionAdapter(getApplicationContext(), cropOptions);
		        
		        AlertDialog.Builder builder = new AlertDialog.Builder(this);
		        builder.setTitle("Choose Crop App");
		        builder.setAdapter( adapter, new DialogInterface.OnClickListener() {
		            public void onClick( DialogInterface dialog, int item ) {
		                startActivityForResult( cropOptions.get(item).appIntent, CROP_FROM_CAMERA);
		            }
		        });
	        
		        builder.setOnCancelListener( new DialogInterface.OnCancelListener() {
		            @Override
		            public void onCancel( DialogInterface dialog ) {
		               
		                if (mImageCaptureUri != null ) {
		                    getContentResolver().delete(mImageCaptureUri, null, null );
		                    mImageCaptureUri = null;
		                }
		            }
		        } );
		        
		        AlertDialog alert = builder.create();
		        
		        alert.show();
        	}
        }
	}