?android 下如果做處理圖片的軟件 可以調用系統的控件 實現縮放切割圖片 非常好的效果 今天寫了一個demo分享給大家。

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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; // 縮放public static final int PHOTORESOULT = 3;// 結果public static final String IMAGE_UNSPECIFIED = "image/*";ImageView imageView = null;Button button0 = null;Button button1 = null;@Overridepublic 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() {@Overridepublic 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() {@Overridepublic 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);}});}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {if (resultCode == NONE)return;// 拍照if (requestCode == PHOTOHRAPH) {//設置文件保存路徑這里放在跟目錄下File picture = new File(Environment.getExternalStorageDirectory() + "/temp.jpg");startPhotoZoom(Uri.fromFile(picture));}if (data == null)return;// 讀取相冊縮放圖片if (requestCode == PHOTOZOOM) {startPhotoZoom(data.getData());}// 處理結果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)壓縮文件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 是寬高的比例intent.putExtra("aspectX", 1);intent.putExtra("aspectY", 1);// outputX outputY 是裁剪圖片寬高intent.putExtra("outputX", 64);intent.putExtra("outputY", 64);intent.putExtra("return-data", true);startActivityForResult(intent, PHOTORESOULT);} }

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