打开系统图库

public class RegisterActivity extends Activity {
private static final int XIANGCE_CODE = 2;
private static final int PHOTO_CODE = 1;
private static final int PHOTO_REQUEST_CUT = 3;

private ImageView upLoadHead;
private EditText phone,verify,password,passwordCheck;

private File photoFile;

private Dialog photoDialog;
private boolean issaved;
private String picpath;
private Bitmap bit;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_register);
Util.setTnit(this);
init();
}

private void init() {
OnClickListener onClick = new MyOnClickListener();
upLoadHead = (ImageView) findViewById(R.id.uploadhead);
phone = (EditText) findViewById(R.id.phone);
verify = (EditText) findViewById(R.id.verify);
password = (EditText) findViewById(R.id.password);
passwordCheck = (EditText) findViewById(R.id.passwordcheck);

upLoadHead.setOnClickListener(onClick);
}

public void register(View v){

}

private class MyOnClickListener implements OnClickListener{

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.uploadhead:
View view = LayoutInflater.from(RegisterActivity.this).inflate(R.layout.uploadphotos_popwindow, null);
TextView photograph = (TextView) view.findViewById(R.id.photograph);
photograph.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
photoDialog.dismiss();
photoFile = new File(Environment.getExternalStorageDirectory(),System.currentTimeMillis()+".jpg");
//调用系统的拍照功能
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//指定调用相机拍照后照片的存储路径
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
startActivityForResult(intent, PHOTO_CODE);
}
});
TextView localphoto = (TextView) view.findViewById(R.id.localphoto);
localphoto.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
photoDialog.dismiss();
//打开系统图库
Intent intent = new Intent(Intent.ACTION_PICK,null);
intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
startActivityForResult(intent, XIANGCE_CODE);
}
});
photoDialog = new Dialog(RegisterActivity.this,R.style.baseDialog);
photoDialog.setContentView(view);
photoDialog.show();
break;
}
}
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case PHOTO_CODE:
startPhotoZoom(Uri.fromFile(photoFile), 200);
break;

case XIANGCE_CODE:
if (data != null)
startPhotoZoom(data.getData(), 200);
break;
case PHOTO_REQUEST_CUT:
if(data != null){
setPicToView(data);
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}

//将进行剪裁后的图片显示到UI界面上
private void setPicToView(Intent data) {
Bundle bundle = data.getExtras();
if(bundle!=null){
Bitmap photo = bundle.getParcelable("data");
Bitmap bitmap = comp(photo);
if(bitmap== null){
return;
}
upLoadHead.setImageBitmap(toRoundCorner(bitmap,8));
issaved = saveFile(bitmap);
}
}

private boolean saveFile(Bitmap bitmap) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
picpath = Environment.getExternalStorageDirectory()+File.separator+"goloveUploadheadimage.jpg";
bit.compress(Bitmap.CompressFormat.PNG, 100, baos);
File file = new File(picpath);
try {
if(file.exists()){
file.delete();
file.createNewFile();
}else{
file.createNewFile();
}
FileOutputStream fos = new FileOutputStream(file);
fos.write(baos.toByteArray());
fos.flush();
fos.close();
return true;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
picpath = "";
return false;
}
}

//设置上传头像的圆角图片
private Bitmap toRoundCorner(Bitmap bitmap, int pixels) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),bitmap.getHeight(),Config.ARGB_8888);
Canvas canvas =new Canvas();

final int color = 0xff424242;

final Paint paint = new Paint();

final Rect rect = new Rect(0,0,bitmap.getWidth(),bitmap.getHeight());

final RectF rectF = new RectF(rect);

final float roundPx = pixels;

paint.setAntiAlias(true);

canvas.drawARGB(0, 0, 0, 0);

paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

canvas.drawBitmap(bitmap, rect, rect, paint);

return output;

}

//压缩图片(第一次)
private Bitmap comp(Bitmap image) {
if(image == null){
return null;
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.PNG, 100, baos);
if( baos.toByteArray().length / 1024>200) {//判断如果图片大于200KB,进行压缩避免在生成图片（BitmapFactory.decodeStream）时溢出
baos.reset();//重置baos即清空baos
image.compress(Bitmap.CompressFormat.PNG, 50, baos);//这里压缩50%，把压缩后的数据存放到baos中
}
ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());
BitmapFactory.Options newOpts = new BitmapFactory.Options();
//开始读入图片，此时把options.inJustDecodeBounds 设回true了
newOpts.inJustDecodeBounds = true;
Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, newOpts);
newOpts.inJustDecodeBounds = false;
int w = newOpts.outWidth;
int h = newOpts.outHeight;
//现在主流手机比较多是800*480分辨率，所以高和宽我们设置为
float hh = 1280f;//这里设置高度为800f
float ww = 720f;//这里设置宽度为480f
//缩放比。由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可
int be = 1;//be=1表示不缩放
if (w > h && w > ww) {//如果宽度大的话根据宽度固定大小缩放
be = (int) (newOpts.outWidth / ww);
} else if (w < h && h > hh) {//如果高度高的话根据宽度固定大小缩放
be = (int) (newOpts.outHeight / hh);
}
if (be <= 0)
be = 1;
newOpts.inSampleSize = be;//设置缩放比例
//重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了
isBm = new ByteArrayInputStream(baos.toByteArray());
bitmap = BitmapFactory.decodeStream(isBm, null, newOpts);
return compressImage(bitmap);//压缩好比例大小后再进行质量压缩

}

//压缩图片(第二次)
private Bitmap compressImage(Bitmap image) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.PNG, 100, baos);// 质量压缩方法，这里100表示不压缩，把压缩后的数据存放到baos中
int options = 100;
while (baos.toByteArray().length / 1024 > 200) { // 循环判断如果压缩后图片是否大于100kb,大于继续压缩
baos.reset();// 重置baos即清空baos
image.compress(Bitmap.CompressFormat.PNG, options, baos);// 这里压缩options%，把压缩后的数据存放到baos中
options -= 10;// 每次都减少10
}
ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());// 把压缩后的数据baos存放到ByteArrayInputStream中
Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, null);// 把ByteArrayInputStream数据生成图片
return bitmap;
}

private void startPhotoZoom(Uri uri, int size) {
//调用系统裁剪图片
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, "image/jpg");
// crop为true是设置在开启的intent中设置显示的view可以剪裁
intent.putExtra("crop", true);
// aspectX aspectY 是宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);

// outputX,outputY 是剪裁图片的宽高
intent.putExtra("outputX", size);
intent.putExtra("outputY", size);
intent.putExtra("return-data", true);

startActivityForResult(intent, PHOTO_REQUEST_CUT);
}
}