解决大图片裁剪问题的详细代码（可直接粘贴复用）
MainActivity中的代码
package com.mzba.photocrop;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.DialogInterface;
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.view.ContextThemeWrapper;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListAdapter;
import android.widget.TextView;
/**
* Android大图裁剪解决办法
* @author 06peng
* @see http://06peng.com
*
*/
public class MainActivity extends Activity {
private ImageView imageView;
private TextView textView;
private File picFile;
private Uri photoUri;
private final int activity_result_camara_with_data = 1006;
private final int activity_result_cropimage_with_data = 1007;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.image);
textView = (TextView) findViewById(R.id.click);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
doPickPhotoAction();
}
});
}
private void doPickPhotoAction() {
final Context dialogContext = new ContextThemeWrapper(this, android.R.style.Theme_Light);
String cancel = "Back";
String[] choices;
choices = new String[2];
choices[0] = "Take Photo"; // 拍照
choices[1] = "Choose Photo"; // 从相册中选择
final ListAdapter adapter = new ArrayAdapter<String>(dialogContext,
android.R.layout.simple_list_item_1, choices);
final AlertDialog.Builder builder = new AlertDialog.Builder(dialogContext);
builder.setTitle("Choose Photo");
builder.setSingleChoiceItems(adapter, -1,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
switch (which) {
case 0:
String status = Environment.getExternalStorageState();
if (status.equals(Environment.MEDIA_MOUNTED)) {// 判断是否有SD卡
doTakePhoto();// 用户点击了从照相机获取
}
break;
case 1:
doCropPhoto();// 从相册中去获取
break;
}
}
});
builder.setNegativeButton(cancel,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.create().show();
}
/**
* 拍照获取图片
*
*/
protected void doTakePhoto() {
try {
File uploadFileDir = new File(Environment.getExternalStorageDirectory(), "/upload");
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (!uploadFileDir.exists()) {
uploadFileDir.mkdirs();
}
picFile = new File(uploadFileDir, "upload.jpeg");
if (!picFile.exists()) {
picFile.createNewFile();
}
photoUri = Uri.fromFile(picFile);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
startActivityForResult(cameraIntent, activity_result_camara_with_data);
} catch (ActivityNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
protected void doCropPhoto() {
try {
File pictureFileDir = new File(Environment.getExternalStorageDirectory(), "/upload");
if (!pictureFileDir.exists()) {
pictureFileDir.mkdirs();
}
picFile = new File(pictureFileDir, "upload.jpeg");
if (!picFile.exists()) {
picFile.createNewFile();
}
photoUri = Uri.fromFile(picFile);
final Intent intent = getCropImageIntent();
startActivityForResult(intent, activity_result_cropimage_with_data);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Constructs an intent for image cropping. 调用图片剪辑程序
*/
public Intent getCropImageIntent() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
intent.setType("image/*");
intent.putExtra("crop", "true");
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("outputX", 600);
intent.putExtra("outputY", 600);
intent.putExtra("noFaceDetection", true);
intent.putExtra("scale", true);
intent.putExtra("return-data", false);
intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
return intent;
}
private void cropImageUriByTakePhoto() {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(photoUri, "image/*");
intent.putExtra("crop", "true");
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("outputX", 600);
intent.putExtra("outputY", 600);
intent.putExtra("scale", true);
intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
intent.putExtra("return-data", false);
intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
intent.putExtra("noFaceDetection", true); // no face detection
startActivityForResult(intent, activity_result_cropimage_with_data);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case activity_result_camara_with_data: // 拍照
try {
cropImageUriByTakePhoto();
} catch (Exception e) {
e.printStackTrace();
}
break;
case activity_result_cropimage_with_data:
try {
if (photoUri != null) {
Bitmap bitmap = decodeUriAsBitmap(photoUri);
imageView.setImageBitmap(bitmap);
}
} catch (Exception e) {
e.printStackTrace();
}
break;
}
}
private Bitmap decodeUriAsBitmap(Uri uri) {
Bitmap bitmap = null;
try {
bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri));
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
}
return bitmap;
}
}
在清单文件中：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mzba.photocrop"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.mzba.photocrop.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>