private Bitmaphead;// 头像Bitmap
private static Stringpath ="/sdcard/myHead/";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_message);
ButterKnife.bind(this);
Bitmap bt = BitmapFactory.decodeFile(path +"head.jpg");// 从SD卡中找头像，转换成Bitmap
if (bt !=null) {
@SuppressWarnings("deprecation")
Drawable drawable =new BitmapDrawable(bt);// 转换成drawable
userIcon.setImageDrawable(drawable);
}
}
创建MyApp onCreat()中可解决文件曝光率异常
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
StrictMode.VmPolicy.Builder builder =new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
}
点击事件时调用
private void initpop() {
View view = LayoutInflater.from(this).inflate(R.layout.pop,null);
final PopupWindow popupWindow =new PopupWindow(view, LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT,true);
popupWindow.setContentView(view);
popupWindow.setOutsideTouchable(true);
popupWindow.setBackgroundDrawable(new ColorDrawable(Color.WHITE));
popupWindow.showAtLocation(view, Gravity.CENTER,0,0);
popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
@Override
public void onDismiss() {
bgAlpha(1f);
}
});
View ta = view.findViewById(R.id.take_photo);
View be = view.findViewById(R.id.bendi);
ta.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent2 =new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
Uri photoURI = FileProvider.getUriForFile
(MyMessageActivity.this, getApplicationContext().getPackageName() +".provider",new File(Environment.getExternalStorageDirectory(),"head.jpg"));
intent2.putExtra(MediaStore.EXTRA_OUTPUT,
photoURI);
// intent2.putExtra(MediaStore.EXTRA_OUTPUT,
// Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "head.jpg")));
startActivityForResult(intent2,2);// 采用ForResult打开
popupWindow.dismiss();
}
});
be.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent1 =new Intent(Intent.ACTION_PICK,null);
//打开文件
intent1.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");
startActivityForResult(intent1,1);
popupWindow.dismiss();
}
});
}
@Override
protected void onActivityResult(int requestCode,int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case 1:
if (resultCode ==RESULT_OK) {
cropPhoto(data.getData());// 裁剪图片
}
break;
case 2:
if (resultCode ==RESULT_OK) {
File temp =new File(Environment.getExternalStorageDirectory() +"/head.jpg");
cropPhoto(Uri.fromFile(temp));// 裁剪图片
}
break;
case 3:
if (data !=null) {
Bundle extras = data.getExtras();
head = extras.getParcelable("data");
if (head !=null) {
/**
* 上传服务器代码
*/
setPicToView(head);// 保存在SD卡中
userIcon.setImageBitmap(head);// 用ImageButton显示出来
}
}
break;
default:
break;
}
}
/**
* 调用系统的裁剪功能
*
* @param uri
*/
public void cropPhoto(Uri uri) {
Intent intent =new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri,"image/*");
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",250);
intent.putExtra("outputY",250);
intent.putExtra("return-data",true);
startActivityForResult(intent,3);
}
private void setPicToView(Bitmap mBitmap) {
String sdStatus = Environment.getExternalStorageState();
if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) {// 检测sd是否可用
return;
}
FileOutputStream b =null;
File file =new File(path);
file.mkdirs();// 创建文件夹
String fileName =path +"head.jpg";// 图片名字
try {
b =new FileOutputStream(fileName);
mBitmap.compress(Bitmap.CompressFormat.JPEG,100, b);// 把数据写入文件
}catch (FileNotFoundException e) {
e.printStackTrace();
}finally {
try {
// 关闭流
b.flush();
b.close();
}catch (IOException e) {
e.printStackTrace();
}
}
}