Android ClipboardManager 复制图片到剪贴板+从剪贴板粘贴图片的实现（亲测有效）

场景：如标题所述，需要把图片复制到剪贴板，在另外一个程序里面（如word），通过剪贴板粘贴的方式来获取图片。

实现流程：

1、获取ClipboardManager对象
ClipboardManager clipboard = (ClipboardManager) context.getSystemService(Context.CLIPBOARD_SERVICE);

2、图片使用自己存在的替换
Bitmap bitmap = CommonUtils.convertText2Bitmap(result);

3、保存图片到文件地址
File targetFile = new File(context.getCacheDir(), "write.jpg");
boolean saveResult = ImageUtils.save(bitmap, targetFile, Bitmap.CompressFormat.JPEG);

4、把uri放到剪贴板里面，这个uri哪里来的，请看第5步的android:authorities节点的值
String uri = "content://com.android.demo.FileProvider/test";
Uri copyUri = Uri.parse(uri);
ClipData clip = ClipData.newUri(context.getContentResolver(), "URI", copyUri);
clipboardmanager.setPrimaryClip(clip);

5、定义一个provider，在AndroidManifest.xml声明如下：

<provider
    android:name=".component.provider.FileProvider"
    android:authorities="com.android.demo.FileProvider"
    android:exported="true"
    android:multiprocess="true" />

6、FileProvider的代码实现如下：

 
 
class FileProvider : ContentProvider() {
 
    private lateinit var basePath: String
    override fun onCreate(): Boolean {
        basePath = context!!.cacheDir!!.path
        return true
    }
 
 
    override fun query(
        uri: Uri,
        projection: Array<out String>?,
        selection: String?,
        selectionArgs: Array<out String>?,
        sortOrder: String?
    ): Cursor? {
        TODO("Not yet implemented")
    }
 
    override fun getType(uri: Uri): String? {
        return "image/jpeg"
    }
 
    override fun insert(uri: Uri, values: ContentValues?): Uri? {
        TODO("Not yet implemented")
    }
 
    override fun delete(uri: Uri, selection: String?, selectionArgs: Array<out String>?): Int {
        TODO("Not yet implemented")
    }
 
    override fun update(
        uri: Uri,
        values: ContentValues?,
        selection: String?,
        selectionArgs: Array<out String>?
    ): Int {
        TODO("Not yet implemented")
    }
 
    override fun openFile(uri: Uri, mode: String): ParcelFileDescriptor? {
        var imode = 0
        if (mode.contains("w")) imode = imode or ParcelFileDescriptor.MODE_WRITE_ONLY
        if (mode.contains("r")) imode = imode or ParcelFileDescriptor.MODE_READ_ONLY
        if (mode.contains("+")) imode = imode or ParcelFileDescriptor.MODE_APPEND
        val pseg = uri.pathSegments
//        if (pseg.size < 3) return null
        try {
//            val filePath: File = filePathFromRecord(pseg[2], pseg[1])
            val filePath: File = getFile(basePath, uri, mode)
            return ParcelFileDescriptor.open(filePath, imode)
        } catch (e: FileNotFoundException) {
            e.printStackTrace()
        }
        return null
    }
 
    companion object {
        fun getFile(basePath: String, uri: Uri, mode: String): File {
            return File(basePath, "write.jpg")
        }
    }
}

7、从剪贴版粘贴的实现如下：

public void clickButton2(ImageView imageView) {
        ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
        ContentResolver cr = getContentResolver();
        ClipData clip = clipboard.getPrimaryClip();
        if (clip == null) {
            Log.d(TAG, "null");
            return;
        }
        ClipData.Item item = clipboard.getPrimaryClip().getItemAt(0);
        if (item == null) {
            return;
        }
        String pasteData = (String) item.getText();
        if (ObjectUtils.isNotEmpty(pasteData)) {
            Log.d(TAG, pasteData);
            return;
        }
        Uri pasteUri = item.getUri();
        if (pasteUri != null) {
            Log.d(TAG, pasteUri.toString());
            String uriMimeType = cr.getType(pasteUri);
            if (uriMimeType != null) {
                if (uriMimeType.contains("image")) {
                    Log.d(TAG, "find a image in clipboard");
                    try {
                        Bitmap bitmap = MediaStore.Images.Media.getBitmap(cr, pasteUri);
                        imageView.setImageBitmap(bitmap);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }