将content:// Uri解析为实际的文件路径

import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Uri contentUri = ...; // 这里填入你的content:// URI
        String filePath = getFilePathFromContentUri(contentUri);
        if (filePath != null) {
            // 使用文件路径
        }
    }

    private String getFilePathFromContentUri(Uri uri) {
        String filePath = null;
        String[] projection = {MediaStore.Images.Media.DATA};
        Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
        if (cursor != null) {
            if (cursor.moveToFirst()) {
                int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                filePath = cursor.getString(columnIndex);
            }
            cursor.close();
        }
        return filePath;
    }
}