Android頭像上傳實戰模擬

在開發中頭像的上傳應該是必不可少的，話不多說上效果圖！

點選頭像彈出PopupWindow分別三個按鈕。

<?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>

 

佈局很簡單就一個圖片。

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; // 拍照的許可權處理返回碼
    private static final int WRITE_SDCARD_PERMISSION_REQUEST_CODE = 1; // 讀儲存卡內容的許可權處理返回碼

    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; // 相簿選取返回的 requestCode
    private static final int CROP_PHOTO_REQUEST_CODE = 5; // 裁剪圖片返回的 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);
                //獲取popupwinder裡的id按鈕id來進行點選
                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();
                    }
                });
                //相簿
                xiangce.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        // 開啟系統圖庫的 Action，等同於: "android.intent.action.GET_CONTENT"
                        Intent choiceFromAlbumIntent = new Intent(Intent.ACTION_GET_CONTENT);
                        // 設定資料型別為圖片型別
                        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) {
                            // 同上面的許可權申請邏輯
                            if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CAMERA)
                                    != PackageManager.PERMISSION_GRANTED) {
                        /*
                         * 下面是對呼叫相機拍照許可權進行申請
                         */
                                ActivityCompat.requestPermissions(MainActivity.this,
                                        new String[]{Manifest.permission.CAMERA,}, TAKE_PHOTO_PERMISSION_REQUEST_CODE);
                            } else {
                                startCamera();
                            }
                            // 從相簿獲取
                        } else if (v == xiangce) {
                            choiceFromAlbum();
                        }
                    }
                });

            }
        });

        if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CAMERA)
                != PackageManager.PERMISSION_GRANTED) {
            // 申請讀寫記憶體卡內容的許可權
            ActivityCompat.requestPermissions(MainActivity.this,
                    new String[]{Manifest.permission.CAMERA}, TAKE_PHOTO_PERMISSION_REQUEST_CODE);
        }
    }





    private void choiceFromAlbum() {
        // 開啟系統圖庫的 Action，等同於: "android.intent.action.GET_CONTENT"
        Intent choiceFromAlbumIntent = new Intent(Intent.ACTION_GET_CONTENT);
        // 設定資料型別為圖片型別
        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) {
            // 呼叫相機拍照：
            case TAKE_PHOTO_PERMISSION_REQUEST_CODE:
                // 如果使用者授予許可權，那麼開啟相機拍照
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    startCamera();
                } else {
                    Toast.makeText(this, "拍照許可權被拒絕", Toast.LENGTH_SHORT).show();
                }
                break;
            // 開啟相簿選取：
            case WRITE_SDCARD_PERMISSION_REQUEST_CODE:
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                } else {
                    Toast.makeText(this, "讀寫記憶體卡內容許可權被拒絕", Toast.LENGTH_SHORT).show();
                }
                break;
        }

//        switch (requestCode){
//            case 1:
//                if (grantResults.length>0&&grantResults[0]==PackageManager.PERMISSION_GRANTED) {
//                    Xiangji();
//                }else {
//                    Toast.makeText(this, "授權失敗", Toast.LENGTH_SHORT).show();
//                }
//        }
    }

    private void startCamera() {
        /**
         * 設定拍照得到的照片的儲存目錄，訪問應用的快取路徑不需要讀寫記憶體卡的申請許可權，
         * 因此,這裡為了方便,將拍照得到的照片存在這個快取目錄中
         */
        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 以前使用原來的方法來獲取檔案的 Uri
        }
        // 開啟系統相機的 Action，等同於："android.media.action.IMAGE_CAPTURE"
        Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        // 設定拍照所得照片的輸出目錄
        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);
        }

    }

    //一下是從相簿選取截圖上傳//

    private void cropPhoto(Uri inputUri) {
        // 呼叫系統裁剪圖片的 Action
        Intent cropPhotoIntent = new Intent("com.android.camera.action.CROP");
        //
        cropPhotoIntent.setDataAndType(inputUri, "image/*");
        // 授權應用讀取 Uri，這一步要有.不然裁剪程式會崩潰
        cropPhotoIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        // 設定圖片的最終輸出目錄
        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) {
            // 通過返回碼判斷是哪個應用返回的資料
            switch (requestCode) {
                // 拍照
                case TAKE_PHOTO_REQUEST_CODE:
                    cropPhoto(photoUri);
                    break;
                // 相簿選擇
                case CHOICE_FROM_ALBUM_REQUEST_CODE:
                    cropPhoto(data.getData());
                    break;
                // 裁剪圖片
                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, "無法獲取您的照片", Toast.LENGTH_SHORT).show();
                    }
                    break;
            }
        }
    }
}

 

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