这是我的裁剪代码，它在 2.2 和 2.3 上运行良好。但它不适用于 3.1。请解决这个问题。在 V2.3(HTC Wildfire S) 和 V3.1(Samsung 10.1) 上测试提前谢谢。
package com.androidworks;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.ActivityNotFoundException;
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.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class MediaStoreTest extends Activity {
protected static final int PHOTO_PICKED = 0;
private static final String TEMP_PHOTO_FILE = "tempPhoto.jpg";
private Button mBtn;
protected ImageView photo;
protected int outputX = 400;
protected int outputY = 600;
protected int aspectX = 1;
protected int aspectY = 1;
protected boolean return_data = false;
protected MediaStoreTest thiz;
protected boolean scale = true;
protected boolean faceDetection = true;
protected boolean circleCrop = false;
private final static String TAG = "MediaStoreTest";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
thiz = this;
setContentView(R.layout.main);
mBtn = (Button) findViewById(R.id.btnLaunch);
photo = (ImageView) findViewById(R.id.imgPhoto);
mBtn.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
try {
File picFile = new File(Environment.getExternalStorageDirectory(),"rawImge.png");
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(Uri.fromFile(picFile),"image/*");
intent.putExtra("crop", "true");
intent.putExtra("aspectX", aspectX);
intent.putExtra("aspectY", aspectY);
intent.putExtra("outputX", outputX);
intent.putExtra("outputY", outputY);
intent.putExtra("scale", scale);
intent.putExtra("return-data", return_data);
intent.putExtra(MediaStore.EXTRA_OUTPUT, getTempUri());
intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
intent.putExtra("noFaceDetection",!faceDetection); // lol, negative boolean noFaceDetection
if (circleCrop) {
intent.putExtra("circleCrop", true);
}
startActivityForResult(intent, PHOTO_PICKED);
} catch (ActivityNotFoundException e) {
Toast.makeText(thiz, R.string.photoPickerNotFoundText, Toast.LENGTH_LONG).show();
}
}
});
}
private Uri getTempUri() {
return Uri.fromFile(getTempFile());
}
private File getTempFile() {
if (isSDCARDMounted()) {
File f = new File(Environment.getExternalStorageDirectory(),TEMP_PHOTO_FILE);
try {
f.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
Toast.makeText(thiz, R.string.fileIOIssue, Toast.LENGTH_LONG).show();
}
return f;
} else {
return null;
}
}
private boolean isSDCARDMounted(){
String status = Environment.getExternalStorageState();
if (status.equals(Environment.MEDIA_MOUNTED))
return true;
return false;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case PHOTO_PICKED:
if (resultCode == RESULT_OK) {
if (data == null) {
Log.w(TAG, "Null data, but RESULT_OK, from image picker!");
Toast t = Toast.makeText(this, R.string.no_photo_picked,
Toast.LENGTH_SHORT);
t.show();
return;
}
final Bundle extras = data.getExtras();
if (extras != null) {
File tempFile = getTempFile();
// new logic to get the photo from a URI
if (data.getAction() != null) {
processPhotoUpdate(tempFile);
}
}
}
break;
}
}
/*
* processes a temp photo file from
*/
private void processPhotoUpdate(File tempFile) {
Log.w(TAG, "processPhotoUpdate is called");
FileInputStream fisForResilt = null;
Bitmap result = null;
try {
fisForResilt = new FileInputStream(tempFile);
result = BitmapFactory.decodeStream(fisForResilt);
fisForResilt.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
android.widget.LinearLayout.LayoutParams params = new android.widget.LinearLayout.LayoutParams(result.getWidth(),result.getHeight());
params.gravity = Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL;
photo.setLayoutParams(params);
photo.setImageBitmap(result);
}
}
我的布局看起来像这样，为此你需要在你的 sdcard “rawImage”上有一个图像。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/summary"
/>
<Button
android:id="@+id/btnLaunch"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Launch Media Gallery"
/>
<ImageView
android:id="@+id/imgPhoto"
android:layout_width="400dip"
android:layout_height="400dip"
/>
</LinearLayout>