Android 调用相册 拍照 实现系统控件缩放 切割图片

时间：2023-12-22 20:58:56

android 下如果做处理图片的软件 可以调用系统的控件 实现缩放切割图片 非常好的效果 今天写了一个demo分享给大家。

package cn.m15.test;

import java.io.ByteArrayOutputStream;

import java.io.File;

import android.app.Activity;

import android.content.Intent;

import android.graphics.Bitmap;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.provider.MediaStore;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.ImageView;

public class testActivity extends Activity {

	public static final int NONE = 0;

	public static final int PHOTOHRAPH = 1;// 拍照

	public static final int PHOTOZOOM = 2; // 缩放

	public static final int PHOTORESOULT = 3;// 结果

	public static final String IMAGE_UNSPECIFIED = "image/*";

	ImageView imageView = null;

	Button button0 = null;

	Button button1 = null;

	@Override

	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.main);

		imageView = (ImageView) findViewById(R.id.imageID);

		button0 = (Button) findViewById(R.id.btn_01);

		button1 = (Button) findViewById(R.id.btn_02);

		button0.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				Intent intent = new Intent(Intent.ACTION_PICK, null);

				intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);

				startActivityForResult(intent, PHOTOZOOM);

			}

		});

		button1.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

				intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "temp.jpg")));

				startActivityForResult(intent, PHOTOHRAPH);

			}

		});

	}

	@Override

	protected void onActivityResult(int requestCode, int resultCode, Intent data) {

		if (resultCode == NONE)

			return;

		// 拍照

		if (requestCode == PHOTOHRAPH) {

			//设置文件保存路径这里放在跟目录下

			File picture = new File(Environment.getExternalStorageDirectory() + "/temp.jpg");

			startPhotoZoom(Uri.fromFile(picture));

		}

		if (data == null)

			return;

		// 读取相册缩放图片

		if (requestCode == PHOTOZOOM) {

			startPhotoZoom(data.getData());

		}

		// 处理结果

		if (requestCode == PHOTORESOULT) {

			Bundle extras = data.getExtras();

			if (extras != null) {

				Bitmap photo = extras.getParcelable("data");

				ByteArrayOutputStream stream = new ByteArrayOutputStream();

				photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0 - 100)压缩文件

				imageView.setImageBitmap(photo);

			}

		}

		super.onActivityResult(requestCode, resultCode, data);

	}

	public void startPhotoZoom(Uri uri) {

		Intent intent = new Intent("com.android.camera.action.CROP");

		intent.setDataAndType(uri, IMAGE_UNSPECIFIED);

		intent.putExtra("crop", "true");

		// aspectX aspectY 是宽高的比例

		intent.putExtra("aspectX", 1);

		intent.putExtra("aspectY", 1);

		// outputX outputY 是裁剪图片宽高

		intent.putExtra("outputX", 64);

		intent.putExtra("outputY", 64);

		intent.putExtra("return-data", true);

		startActivityForResult(intent, PHOTORESOULT);

	}

}

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