在开发中头像的上传应该是必不可少的，话不多说上效果图！ 点击头像弹出PopupWindow分别三个按钮。
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.myapplication.MainActivity"> <ImageView android:id="@+id/img" android:src="@mipmap/ic_launcher_round" android:layout_width="100dp" android:layout_height="100dp" /> </LinearLayout>布局很简单就一个图片。
package com.example.myapplication; import android.Manifest; import android.app.Activity; import android.content.Intent; import android.content.pm.PackageManager; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Build; import android.provider.MediaStore; import android.support.annotation.NonNull; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.support.v4.content.FileProvider; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.ImageView; import android.widget.PopupWindow; import android.widget.Toast; import java.io.File; import java.io.IOException; import java.util.Random; public class MainActivity extends AppCompatActivity { private Button startCameraButton = null; private ImageView img; private Uri photoUri = null; private Uri photoOutputUri = null; // private static final int TAKE_PHOTO_PERMISSION_REQUEST_CODE = 0; // 拍照的权限处理返回码 private static final int WRITE_SDCARD_PERMISSION_REQUEST_CODE = 1; // 读储存卡内容的权限处理返回码 private static final int TAKE_PHOTO_REQUEST_CODE = 3; // 拍照返回的 requestCode private static final int CHOICE_FROM_ALBUM_REQUEST_CODE = 4; // 相册选取返回的 requestCode private static final int CROP_PHOTO_REQUEST_CODE = 5; // 裁剪图片返回的 requestCode // private Button xiangji; private Button xiangce; private Button falish; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); } private void initView() { img = (ImageView) findViewById(R.id.img); img.setOnClickListener(new View.OnClickListener() { private PopupWindow popupWindow; @Override public void onClick(View view) { View layout = LayoutInflater.from(MainActivity.this).inflate(R.layout.activity_pop, null); popupWindow = new PopupWindow(MainActivity.this); popupWindow.setContentView(layout); popupWindow.setWidth(ViewGroup.LayoutParams.MATCH_PARENT); popupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); popupWindow.showAtLocation(img, Gravity.BOTTOM| Gravity.RIGHT,150,0); xiangji=layout.findViewById(R.id.an1); xiangce=layout.findViewById(R.id.an2); falish=layout.findViewById(R.id.an3); //获取popupwinder里的id按钮id来进行点击 falish.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { popupWindow.dismiss(); Toast.makeText(MainActivity.this, "取消成功", Toast.LENGTH_SHORT).show(); } }); //相册 xiangce.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // 打开系统图库的 Action，等同于: "android.intent.action.GET_CONTENT" Intent choiceFromAlbumIntent = new Intent(Intent.ACTION_GET_CONTENT); // 设置数据类型为图片类型 choiceFromAlbumIntent.setType("image/*"); startActivityForResult(choiceFromAlbumIntent, CHOICE_FROM_ALBUM_REQUEST_CODE); } }); //拍照 xiangji.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (v == xiangji) { // 同上面的权限申请逻辑 if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) { /* * 下面是对调用相机拍照权限进行申请 */ ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.CAMERA,}, TAKE_PHOTO_PERMISSION_REQUEST_CODE); } else { startCamera(); } // 从相册获取 } else if (v == xiangce) { choiceFromAlbum(); } } }); } }); if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) { // 申请读写内存卡内容的权限 ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.CAMERA}, TAKE_PHOTO_PERMISSION_REQUEST_CODE); } } private void choiceFromAlbum() { // 打开系统图库的 Action，等同于: "android.intent.action.GET_CONTENT" Intent choiceFromAlbumIntent = new Intent(Intent.ACTION_GET_CONTENT); // 设置数据类型为图片类型 choiceFromAlbumIntent.setType("image/*"); startActivityForResult(choiceFromAlbumIntent, CHOICE_FROM_ALBUM_REQUEST_CODE); } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); switch (requestCode) { // 调用相机拍照： case TAKE_PHOTO_PERMISSION_REQUEST_CODE: // 如果用户授予权限，那么打开相机拍照 if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { startCamera(); } else { Toast.makeText(this, "拍照权限被拒绝", Toast.LENGTH_SHORT).show(); } break; // 打开相册选取： case WRITE_SDCARD_PERMISSION_REQUEST_CODE: if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { } else { Toast.makeText(this, "读写内存卡内容权限被拒绝", Toast.LENGTH_SHORT).show(); } break; } // switch (requestCode){ // case 1: // if (grantResults.length>0&&grantResults[0]==PackageManager.PERMISSION_GRANTED) { // Xiangji(); // }else { // Toast.makeText(this, "授权失败", Toast.LENGTH_SHORT).show(); // } // } } private void startCamera() { /** * 设置拍照得到的照片的储存目录，访问应用的缓存路径不需要读写内存卡的申请权限， * 因此,这里为了方便,将拍照得到的照片存在这个缓存目录中 */ File file = new File(getExternalCacheDir(), "image.jpg"); try { if (file.exists()) { file.delete(); } file.createNewFile(); } catch (IOException e) { e.printStackTrace(); } if (Build.VERSION.SDK_INT >= 24) { photoUri = FileProvider.getUriForFile(this, "com.zhi_dian.provider", file); } else { photoUri = Uri.fromFile(file); // Android 7.0 以前使用原来的方法来获取文件的 Uri } // 打开系统相机的 Action，等同于："android.media.action.IMAGE_CAPTURE" Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); // 设置拍照所得照片的输出目录 takePhotoIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri); startActivityForResult(takePhotoIntent, TAKE_PHOTO_REQUEST_CODE); } public static void take(Activity activity, Uri imageuri, int requestCode) { Intent intentdemo = new Intent(); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { { intentdemo.addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION); } intentdemo.setAction(MediaStore.ACTION_IMAGE_CAPTURE); intentdemo.putExtra(MediaStore.EXTRA_OUTPUT, imageuri); activity.startActivityForResult(intentdemo, requestCode); } } //一下是从相册选取截图上传// private void cropPhoto(Uri inputUri) { // 调用系统裁剪图片的 Action Intent cropPhotoIntent = new Intent("com.android.camera.action.CROP"); // cropPhotoIntent.setDataAndType(inputUri, "image/*"); // 授权应用读取 Uri，这一步要有.不然裁剪程序会崩溃 cropPhotoIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); // 设置图片的最终输出目录 cropPhotoIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoOutputUri = Uri.parse("file:sdcard/image_output" + new Random().nextInt(99) + ".jpg")); startActivityForResult(cropPhotoIntent, CROP_PHOTO_REQUEST_CODE); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == RESULT_OK) { // 通过返回码判断是哪个应用返回的数据 switch (requestCode) { // 拍照 case TAKE_PHOTO_REQUEST_CODE: cropPhoto(photoUri); break; // 相册选择 case CHOICE_FROM_ALBUM_REQUEST_CODE: cropPhoto(data.getData()); break; // 裁剪图片 case CROP_PHOTO_REQUEST_CODE: File file = new File(photoOutputUri.getPath()); if (file.exists()) { Bitmap bitmap = BitmapFactory.decodeFile(photoOutputUri.getPath()); img.setImageBitmap(bitmap); } else { Toast.makeText(this, "无法获取您的照片", Toast.LENGTH_SHORT).show(); } break; } } } }本人第一次发表博客，有什么意见欢迎提出！ 如果对您有帮助请点个赞！
