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275 changes: 275 additions & 0 deletions
275
...src/main/java/edu/hzuapps/androidlabs/soft1714080902401/Soft1714080902401_meActivity.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,275 @@ | ||
| package edu.hzuapps.androidlabs.soft1714080902401; | ||
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| import android.annotation.TargetApi; | ||
| import android.content.ContentUris; | ||
| import android.content.Intent; | ||
| import android.database.Cursor; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.BitmapFactory; | ||
| import android.net.Uri; | ||
| import android.os.Build; | ||
| import android.os.Bundle; | ||
| import android.os.Environment; | ||
| import android.os.StrictMode; | ||
| import android.provider.DocumentsContract; | ||
| import android.provider.MediaStore; | ||
| import android.support.annotation.RequiresApi; | ||
| import android.support.v7.app.AppCompatActivity; | ||
| import android.view.View; | ||
| import android.widget.Button; | ||
| import android.widget.ImageView; | ||
| import android.widget.Toast; | ||
|
|
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| import java.io.File; | ||
| import java.io.FileNotFoundException; | ||
| import java.io.IOException; | ||
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| public class Soft1714080902401_meActivity extends AppCompatActivity { | ||
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| private static final File USER_ICON = new File(Environment.getExternalStorageDirectory(), "touxiang.jpg"); | ||
| //请求识别码(分别为本地相册、相机、图片裁剪) | ||
| private static final int PHOTO_REQUEST = 1; | ||
| private static final int CAMERA_REQUEST = 2; | ||
| private static final int PHOTO_CLIP = 3; | ||
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| private Button buttonLocal; | ||
| private Button buttonCamera; | ||
| private ImageView picture; | ||
| private Uri imageUri; | ||
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| @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2) | ||
| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| /*解决android 7.0以上版本 exposed beyond app through ClipData.Item.getUri()问题*/ | ||
| StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder(); | ||
| StrictMode.setVmPolicy(builder.build()); | ||
| builder.detectFileUriExposure(); | ||
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| super.onCreate(savedInstanceState); | ||
| setContentView(R.layout.activity_soft1714080902401_me); | ||
|
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| Button begin = (Button) findViewById(R.id.Begin); | ||
| begin.setOnClickListener(new View.OnClickListener() { | ||
| @Override | ||
| public void onClick(View v) { | ||
| Intent intent; | ||
| intent = new Intent(Soft1714080902401_meActivity.this, Soft1714080902401_01Activity.class); | ||
| startActivity(intent); | ||
| } | ||
| }); | ||
| Button begin2 = (Button) findViewById(R.id.Begin2); | ||
| begin2.setOnClickListener(new View.OnClickListener() { | ||
| @Override | ||
| public void onClick(View v) { | ||
| Intent intent = new Intent(Soft1714080902401_meActivity.this, Soft1714080902401_meActivity.class); | ||
| startActivity(intent); | ||
| } | ||
| }); | ||
|
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| picture = (ImageView) findViewById(R.id.imageView); | ||
| buttonLocal = (Button) findViewById(R.id.buttonLocalpic); | ||
| buttonCamera = (Button) findViewById(R.id.buttonCamerapic); | ||
|
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| buttonLocal.setOnClickListener(new View.OnClickListener() { | ||
| @Override | ||
| public void onClick(View v) { | ||
| // getPicFromLocal(); | ||
| Intent intent = new Intent("android.intent.action.GET_CONTENT"); | ||
| intent.setType("image/*"); | ||
| /* | ||
| * 打开相册 | ||
| * */ | ||
| startActivityForResult(intent, PHOTO_REQUEST); | ||
| } | ||
| }); | ||
|
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| buttonCamera.setOnClickListener(new View.OnClickListener() { | ||
| @Override | ||
| public void onClick(View v) { | ||
| // getPicFromCamera(); | ||
| File outputImage = new File(Environment.getExternalStorageDirectory(), | ||
| "output_image.jpg"); | ||
| /* | ||
| * 初始化图片 | ||
| * */ | ||
| try { | ||
| if (outputImage.exists()) { | ||
| outputImage.delete(); | ||
| } | ||
| outputImage.createNewFile(); | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| /* | ||
| * 将File对象转成Uri对象 | ||
| * */ | ||
| imageUri = Uri.fromFile(outputImage); | ||
| /* | ||
| * 构建隐式Intent，指定图片输出地址 | ||
| * */ | ||
| Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); | ||
| intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri); | ||
| /* | ||
| * 启动相机，并向下一个活动传递参数 | ||
| * */ | ||
| startActivityForResult(intent, CAMERA_REQUEST); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| @Override | ||
| protected void onActivityResult(int requestCode, int resultCode, Intent data) { | ||
| switch (requestCode) { | ||
| /* | ||
| * 拍照成功返回结果，跳转到裁剪 | ||
| * */ | ||
| case CAMERA_REQUEST: | ||
| if (resultCode == RESULT_OK) { | ||
| Intent intent = new Intent("com.android.camera.action.CROP"); | ||
| intent.setDataAndType(imageUri, "image/*"); | ||
| intent.putExtra("scale", true); | ||
| intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri); | ||
| /* | ||
| * 启动剪裁程序 | ||
| * */ | ||
| startActivityForResult(intent,PHOTO_CLIP); | ||
| } | ||
| break; | ||
| /* | ||
| * 裁剪结束，将.jpg解析成Bitmap显示出来 | ||
| * */ | ||
| case PHOTO_CLIP: | ||
| if (resultCode == RESULT_OK) { | ||
| try { | ||
| Bitmap bitmap = BitmapFactory.decodeStream( | ||
| getContentResolver().openInputStream(imageUri)); | ||
| picture.setImageBitmap(bitmap); //显示剪裁后的图片 | ||
| } catch (FileNotFoundException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| break; | ||
| /* | ||
| * 判断版本，选择处理图片方式 | ||
| * */ | ||
| case PHOTO_REQUEST: | ||
| if (resultCode == RESULT_OK) { | ||
| if (Build.VERSION.SDK_INT >= 19) { | ||
| /* | ||
| * 4.4及以上版本 | ||
| * */ | ||
| handleImageOnKitKat(data); | ||
| } else { | ||
| /* | ||
| * 4.4以下版本 | ||
| * */ | ||
| handleImageBeforeKitKat(data); | ||
| } | ||
| } | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| /* | ||
| * 4.4以上版本需要封装Uri | ||
| * */ | ||
| @TargetApi(19) | ||
| private void handleImageOnKitKat(Intent data) { | ||
| String imagePath = null; | ||
| /* | ||
| * 获取路径 | ||
| * */ | ||
| Uri uri = data.getData(); | ||
| /* | ||
| *Document类型Uri对document id处理 | ||
| * */ | ||
| if (DocumentsContract.isDocumentUri(this, uri)) { | ||
| String docId = DocumentsContract.getDocumentId(uri); | ||
| /* | ||
| * 与Uri中Authority部分比较,media格式需进一步解析 | ||
| * */ | ||
| if ("com.android.providers.media.documents".equals( | ||
| uri.getAuthority())) { | ||
| String id = docId.split(":")[1]; | ||
| String selection = MediaStore.Images.Media._ID + "=" + id; | ||
| /* | ||
| * 传入getImagePath获得真实路径 | ||
| * */ | ||
| imagePath = getImagePath( | ||
| MediaStore.Images.Media.EXTERNAL_CONTENT_URI, selection); | ||
| } else if ("com.android.providers.downloads.documents".equals( | ||
| uri.getAuthority())) { | ||
| /* | ||
| * downloads格式获得路径 | ||
| * */ | ||
| Uri contentUri = ContentUris.withAppendedId( | ||
| Uri.parse("content://downloads/public_downloads"), | ||
| Long.valueOf(docId)); | ||
| imagePath = getImagePath(contentUri, null); | ||
| } | ||
| } else if ("content".equalsIgnoreCase(uri.getScheme())) { | ||
| /* | ||
| * 普通处理 | ||
| * */ | ||
| imagePath = getImagePath(uri, null); | ||
| } | ||
| /* | ||
| * 图片显示 | ||
| * */ | ||
| displayImage(imagePath); | ||
| } | ||
|
|
||
| /* | ||
| * 4.4以下版本返回图片真实Uri，直接处理 | ||
| * */ | ||
| private void handleImageBeforeKitKat(Intent data) { | ||
| Uri uri = data.getData(); | ||
| String imagePath = getImagePath(uri, null); | ||
| displayImage(imagePath); | ||
| } | ||
|
|
||
| /* | ||
| * 获取图片路径 | ||
| * */ | ||
| private String getImagePath(Uri uri, String selection) { | ||
| String path = null; | ||
| Cursor cursor = getContentResolver().query(uri, null, selection, null, null); | ||
| if (cursor != null) { | ||
| /* | ||
| * 定位第一行返回指定列名称 | ||
| * */ | ||
| if (cursor.moveToFirst()) { | ||
| path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA)); | ||
| } | ||
| /* | ||
| * 释放资源 | ||
| * */ | ||
| cursor.close(); | ||
| } | ||
| return path; | ||
| } | ||
|
|
||
| /* | ||
| * 打印图片 | ||
| * */ | ||
| private void displayImage(String imagePath) { | ||
| if (imagePath != null) { | ||
| /* | ||
| * 将照片解析为Bitmap形式展现 | ||
| * */ | ||
| Bitmap bitmap = BitmapFactory.decodeFile(imagePath); | ||
| picture.setImageBitmap(bitmap); | ||
| } else { | ||
| Toast.makeText(this, "failed to get image", Toast.LENGTH_SHORT).show(); | ||
| } | ||
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| } | ||
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| } |
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